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広島大学大学院理学研究科
化学専攻反応有機研究グループ
(C棟3階)
〒739-8526
東広島市鏡山1-3-1

TEL: 082-424-7432
FAX: 082-424-7432

mabe*hiroshima-u.ac.jp
(*は@に置き換えてください)

研究業績

発表原著論文 | 著著 | 総説 |国際会議 | 国内学会

2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996

発表原著論文

2016

  • Using Molecular Architecture to Control the Reactivity of a Triplet Vinylnitrene
    Sarkar, Sujan; Osisioma, Onyinye; Karney, William; Abe, Manabu; Gudmundsdottir, Anna in Journal of the American Chemical Society, in press, ja-2016-05746c
  • Photolysis of 3,5-diphenylisoxazole in argon matrices
    H.Dushanee M. Sriyarathne, Sujan K. Sarkar, Sayaka Hatano, Manabu Abe and Anna D. Gudmundsdottir
    in Journal of Physical Organic Chemistry, in press, DOI: 10.1002/poc.3638.
  • Photochemical [2+2] Paternò-Büchi Cycloaddition of Aromatic Carbonyl Compounds with 2-Siloxy-1H-Pyrrole Derivatives
    Jianfei Xue, Manabu Abe,* Ryukichi Takagi
    in Journal of Physical Organic Chemistry, in press
  • Design and Synthesis of a 4-Nitrobromobenzene Derivative bearing an Ethylene Glycol Tetraacetic acid Unit for a New Generation of Caged Calcium Compounds with Two-Photon Absorption Properties in the Near-IR Region, and Their Application In Vivo
    Jakkampudi, Satish; *Abe, Manabu; Komori, Naomitsu; Takagi, Ryukichi; Furukawa, Ko; Katan, Claudine; Sawada, Wakako; Takahashi, Noriko; *Kasai, Haruo
    in ACS Omega, in press, Open Access Paper.
  • Design, Synthesis, and Reaction of π-Extended Coumarin-Based New Caged Compounds with Two-Photon Absorption Character in the Near-IR Region By Chitose, Youhei; *Abe, Manabu; Furukawa, Kou; Katan, Claudine Chemistry Letters
  • Impact of Diradical Spin State (Singlet vs. Triplet) and Structure (Puckered vs. Planar) on the Photodenitrogenation Stereoselectivity of 2,3-Diazabicyclo[2.2.1]heptanes By *Abe, Manabu; Tada, Saori; Mizuno, Takemi; *Yamasaki, Katsuyoshi The Journal of Physical Chemistry, Part B
  • Computational Study of Cyclobutane-1,3-diylidene Dicarbenes: Ground-State Spin Multiplicity and New Strategy Toward the Synthesis of Bicyclo[1.1.0]but-1(3)-enes By Fujita, Yoshiki; *Abe, Manabu; Shiota, Yoshihito; Suzuki, Tatsuya; Yoshizawa, Kazunari Bulletin of the Chemical Society of Japan, dx.doi.org/doi:10.1246/bcsj.20160051, Open Access Paper
  • The structure of electronically excited a,ß-unsaturated lactones By Maxime Fréneaua,b,c, Pascal de Sainte-Claireb,c, *Manabu Abe, and *Norbert Hoffmann Journal of Physical Organic Chemistry, in press.
  • A Puckered Singlet Cyclopentane-1,3-diyl – Detection of the Third Isomer in Homolysis By Jianhuai Ye, Sayaka Hatano, Manabu Abe,* Ryohei Kishi,* Yusuke Murata, Masayoshi Nakano,* and Waldemar Adam Chem. –Eur. J., in press, inside cover, chem201503975.
  • Design and synthesis of a new chromophore, 2-(4-nitrophenyl)benzofuran, for two-photon uncaging using near-IR light By Naomitsu Komori, Satish Jakkampudi, Ryusei Motoishi, Manabu Abe*, Kenji Kamada,* Ko Furukawa, Claudine Katan*, Wakako Sawada, Noriko Takahashi, Haruo Kasai, Bing Xue, and Takayoshi Kobayashi Chem. Commun., in press, DOI: 10.1039/C5CC07664A, Open Access Paper
  • Biphenalenylidene: Isolation and Characterization of the Reactive Intermediate on the Decomposition Pathway of Phenalenyl Radical By Uchida, Kazuyuki; Ito, Soichi; Nakano, Masayoshi; *Abe, Manabu; *Kubo, Takashi Journal of the American Chemical Society

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2015

  • Intra- and Intermolecular Reactivity of Triplet Sumanenetrione
    By Kanahara, K.; Badal, Md. Mizanur Rahman; Hatano, S.; Abe, M.*; Higashibayashi, S.; Takashina, N.; Sakurai, H.
    Bull. Chem. Soc. Jpn., in press.
  • Multiple crystal forms of N,N’-diacetylchitobiosedeacetylase from Pyrococcus furiosus
    By Tsutomu Nakamura*, Mayumi Niiyama, Wakana Hashimoto, Kurumi Ida, Manabu Abe, Junji Morita and Koichi Uegaki
    Acta Crystallographica Section F, in press.
  • Direct Detection of a Triplet Vinylnitrene, 1,4-Naphthoquinone-2-ylnitrene in Solution and Cryogenic Matrices
    By Sarkar, Sujan; Sawai, Asako; Kanahara, Kousei; Wentrup, Curt; Abe, Manabu; Gudmundsdottir, Anna*
    Journal of the American Chemical Society, in press
  • Simultaneous Observation of Triplet and Singlet Cyclopentane-1,3-diyl Diradicals in the Intersystem Crossing Process
    By Takemi Mizuno, Manabu Abe*, and Noriaki Ikeda
    Australian Journal of Chemistry, 2015, Special Issue for ‘Light’;
    DOI: 10.1071/CH15062
  • Formation of isomerized E, Z-configured 1, 3-dienes in construction of macrocyclic trienes by diene-ene RCM
    By Takagi, Ryukichi; Tanaka, Kenji; Yamamoto, Koumei; Hiraga, Yoshikazu; Kojima, Satoshi; Abe, Manabu
    Bulletin of the Chemical Society of Japan (2015), 88(1), 146-148
    DOI:10.1246/bcsj.20140250
  • Organocatalyzed Asymmetric Aldol Reactions of Ketones and β,γ-Unsaturated α-Ketoesters and Phenylglyoxal Hydrates
    By Konda, Swapna; Guo, Qun-Sheng; Abe, Manabu; Huang, Huicai; Arman, Hadi; Zhao, John C.-G.
    Journal of Organic Chemistry (2015), 80(2), 806-815.
    DOI:10.1021/jo502254e
  • 1,8-Disubstituted Xanthylidene-Based Remote Carbenes: Photolytic Generation and Isolation of Low-Coordinate Palladium(II) Complex
    By Sugawara, Shun; Abe, Manabu; Fujiwara, Yoshihisa; Wakioka, Masayuki; Ozawa, Fumiyuki; Yamamoto, Yohsuke
    European Journal of Inorganic Chemistry (2015), 2015(3), 534-541.
    DOI:10.1002/ejic.201403017
  • Oxidation of an allene compound bearing 1,8-dichloroacridene moieties and photolysis of the halogenated allene compound for the generation of triplet carbenes
    By Fuku-en, Shin-ichi; Furukawa, Ko; Sasamori, Takahiro; Tokitoh, Norihiro; Abe, Manabu; Yamamoto, Yohsuke
    Journal of Physical Organic Chemistry (2015), 28, 79-87.
    DOI:10.1002/poc.3398
    Special Issue for ISRIUM 2014 in Hiroshima
  • Photolysis of acetophenone derivatives with α-cyclopropyl substituents
    By Upul Ranaweera, Ranaweera A. A.; Weragoda, Geethika K.; Bain, John; Watanabe, Shinji; Abe, Manabu; Gudmundsdottir, Anna D.
    Journal of Physical Organic Chemistry (2015), 28, 137-146.
    DOI:10.1002/poc.3389
    Special Issue for ISRIUM 2014 in Hiroshima
  • Electron-spin resonance (ESR) characterization of quintet spin-state bis-nitroxide-bearing cyclopentane-1,3-diyl diradicals.
    Omokawa, Y.; Hatano, S.; Abe, M.*
    J.ournal of Physical Organic Chemistry (2015), 28, 116-120.
    DOI:10.1002/poc.3381
    Special Issue for ISRIUM 2014 in Hiroshima
    DOI:10.1002/poc.3381

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2014

  • [3+2] cycloaddition of α,β-unsaturated metal-carbene complexes
    By: Takagi, Ryukichi; Abe, Manabu
    Edited By: Nishiwaki, Nagatoshi
    Methods and Applications of Cycloaddition Reactions in Organic Syntheses (2014),135-150.
    DOI:10.1002/9781118778173.ch05
  • Theoretical Study on Diradical Characters and Nonlinear Optical Properties of
    1,3-Diradical Compounds
    Kishi, Ryohei;* Murata, Yusuke; Saito, Michika; Morita, Keisuke; Abe, Manabu; Nakano, Masayoshi.*
    J. Phys. Chem. A (2014), 118(45), 10837-10848.
    DOI:10.1021/jp508657s
  • Caged Glutamates with π-Extended 1,2-Dihydronaphthalene Chromophore: Design, Synthesis, Two-Photon Absorption Property, and Photochemical Reactivity. Boinapally, Srikanth; Huang, Bo; Abe, Manabu*; Katan, Claudine*; Noguchi, Megumi; Watanabe, Satoshi; Kasai, Haruo; Xue, Bing; Kobayashi, Takayoshi.
    J. Org. Chem., 2014, 79, 7822-7830.
  • Mode Switching of a Self-Propelled Camphor Disk Sensitive to the Photoisomerization of a Molecular Layer on Water. Nakata, S.*; Miyaji, T.; Matsuda, Y.; Yoshii, M.; Abe, M. Langmuir, 2014, 30, 7353-7357.
  • Time-Resolved IR Spectroscopy of 1,3-Dicyanophenylcyclopentane-1,3-diyl Diradicals: CN Stretching Wavenumber as a Vibrational Signature of Radical Character. Maeda, Akihiro; Oshita, Takehide; Abe, Manabu*; Ishibashi, Taka-aki,* J. Phys. Chem., B, 2014, 118, 3991-3997.
  • Scope and Limitation for FeSO4-Mediated Direct Arylation of Heteroarenes with Arylboronic Acids and Its Synthetic Applications. Komeyama, K.*; Nagao, Y.; Abe, M.; Takaki, K.*, Bull. Chem. Soc. Jpn. 2014, 87 (2), 301-313.

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2013

  • Synthesis and photochemical reactivity of caged glutamates with a π-extended coumarin chromophore as a photolabile protecting group. Sakamoto, Y.; Boinapally, S.; Katan, C.; Abe, M.* Tetrahedron Lett., 2013, 54 (52), 7171-7174.
  • Kinetic Stabilization and Reactivity of π-Single Bonded Species: Alkoxy Group Effect on the Lifetime of Singlet 2,2-Dialkoxy-1,3-diphenyloctahydropentalene-1,3-diyls. Nakagaki, T.; Sakai, T.; Mizuta, T.; Fujiwara, Y.; Abe, M.* Chem. Eur. J. 2013, 19 (31), 10395-10404,
  • On the decarboxylation of 2-methyl-1-tetralone-2-carboxylic acid – oxidation of the enol intermediate by triplet oxygen. A. Riahi, J. Muzart, M. Abe* and N. Hoffmann*, New. J. Chem. 2013, 37 (8), 2245-2249.
  • Substituent Effect on the Energy Barrier for σ-Bond Formation from π-Single Bonded Species, Singlet 2,2-Dialkoxycyclopentane-1,3-diyls. Ye, J.; Fujiwara, Y.; Abe, M.* Beilstein J. Org. Chem. 2013, 9, 925-933.
  • A novel non-metathetic behavior of Grubbs catalyst: Ruthenium-mediated intramolecular [3 + 2] cycloaddition of bis-1,3-dienes.Takagi, R.; Yamamoto, K.; Hiraga, Y.; Kojima, S.; Abe, M. J. Organometalic Chem., 2013, 723, 171-175.
  • Substituent Effect on Reactivity of Triplet Excited State of 2,3-Diazabicyclo[2.2.1]hept-2-enes, DBH Derivatives: CN Bond Cleavage versus CC Bond Cleavage. Abe, M.; Watanabe, Tamura, H.; Boinapally, S.; Kanahara, K.; Fujiwara, Y. J. Org. Chem. 2013, 78 (5), 1940-1948.

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2012

  • Stretch Effects Induced by Molecular Strain on Weakening s-Bonds: Molecular Design of Long-Lived Diradicals (Biradicals).Abe, M.; Furunaga, H.; Ma, D.; Gagliardi, L,; Bodwell, G. J. Org. Chem. 2012, 77, 7612-7619.
  • Direct Observation of Denitrogenation Process of 2,3-Diazabicyclo[2.2.1]hept-2-ene (DBH) Derivatives, Using a Visible 5-fs pulse laser. Abe, M.; Iwakura, I.; Yabushita, A.; Yagi, S.; Liu, J.; Okamura, K.; Kobayashi, T. Chem. Phys. Lett., 2012, 527, 79-83.

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2011

  • Stereochemical Deuterium Labeling Study on the Denitrogenation of 7,7-Diethoxy-2,3-diazabicyclo[2.2.1]hept-2-ene. Yagi, S.; Hiraga, Y.; Takagi, R.; Abe, M.*, J. Physical Organic Chemistry, 2011, 24, 894-901.
  • Hydroxy-group effect on the regioselectivity in a photochemical oxetane formation reaction (the Paterno-Buchi Reaction) of geraniol derivatives. Hisamoto, K.; Hiraga, Y.; Abe, M.*, Photochem. Photobiol.,A., 2011, 10, 1469-1473.
  • Formation of Macrocyclic Lactones in the Paterno-Buchi Dimerization Reaction. Arimura, Junya; Mizuta, Tsutomu; Hiraga, Yoshikazu; Abe, Manabu, Beilstein Journal of organic Chemistry, 2011,7, 265-269
  • The Cooperative effect of a hydroxyl and carboxyl group on the catalytic ability of novel beta-homoproline derivatives on direct asymmetric aldol reactions. Hiraga, Yoshikazu; Widianti, Triana; Kunishi, Tsuyoki; Abe, Manabu, Tetrahedron Asymmetry, 2011, 22(2), 226-237
  • Concentration and Temperature Dependency of Regio- and Stereoselectivity in a Photochemical [2+2] Cycloaddition Reaction (the Paterno-Buchi Reaction): Origin of the Hydroxy-group Directivity. Yabuno, Youhei; Hiraga, Yoshikazu; Takagi, Ryukichi; Abe, Manabu, Journal of the American Chemical Society, 2011, 133, 2592-2604.

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2010

  • Notable Substituent Effects on the Rate Constant of Thermal Denitrogenation of Cyclic Azoalkanes: Strong Evidence for a Stepwise Denitrogenation Mechanism
    Chizuko Ishihara and Manabu Abe* Australian Journal of Chemistry, Special Issue for Heron 5, 2010, 63, 1615-1618.
  • Novel cyclic beta-aminophosphonate derivatives as an efficient organocatalyst for the asymmetric Michael addition reactions of ketones to nitrostyrenes
    Triana Widianti, Yoshikazu Hiraga,* Satoshi Kojima, and Manabu Abe Tetrahedron Asymmetry, 2010, 21, 1861-1868.
  • 高度官能基化オキセタンの選択的合成反応
    (Selective Synthesis of Highly Functionalized Oxetanes)
    安倍 学
    使える!有機合成反応 実践の手引き,No. 101
    (株)化学同人,2010, pp 392-393.
  • Generation and Intermolecular Trapping of 1,2-Diaza-4-silacyclopentane-3,5-diyls in the Denitrogenation of 2,3,5,6-Tetraaza-7-silabicyclo[2.2.1]hept-2-ene: An Experimental and Computational Study.
    Takeshi Nakamura, Akinobu Takegami, and Manabu Abe*
    J. Org. Chem., 2010, 75, 1956-1960.
  • Stereoselective Triplet Sensitized Radical Reactions of Furanone Derivatives.
    Rabih Jahjah, Abdoulaye Gassama, Veronique Bulach, Chikako Suzuki, Manabu Abe,* Norbert Hoffmann,* Agathe Martinez, Jean-Marc Nuzillard
    Chem. Eur. J., 2010, 16, 3341-3354.
  • Computational Study of the Cooperative Effects of Nitrogen and Silicon Atoms on the Singlet-Triplet Energy Spacing in 1,3-Diradicals and the Reactivity of their Singlet States.
    Nakamura, Takeshi, Gagliardi, Laura, Abe, Manabu*
    J. Phys. Org. Chem. 2010, 23, 300-3007.

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2009

  • Formation of a 4-membered ring III (Oxetanes)
    Abe, Manabu.
    in Handbook of Synthetic Photochemistry, Albini Ed., Wiley-VCH, 2009.
  • 一重項ジラジカル化学への期待-ファジーな結合が拓く有機化学の新たな道-
    安倍 学
    化学, 2009, 64 (6), 12-16

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2008

  • Site- and stereoselectivity in the photochemical oxetane formation reaction (Paternò–Büchi reaction) of tetrahydrobenzofuranols with benzophenone: Hydroxy-directed diastereoselectivity?
    Yabuno, Youhei; Hiraga, Yoshikazu; Abe, Manabu.
    Chem. Lett. 2008, 37, 822-823.
  • Miltiple functions of ergosterol in the fission yeast Schizosaccharocyces pombe.
    Iwaki, Tomoko; Iefuji, Haruyuki; Hiraga, Yoshikazu; Hosomi, Akira; Morita, Tomotake; Giga-Hama, Yuko; Takegawa, Kaoru.
    Microbiology, 2008, 154, 830-841.
  • Stereoselective synthesis of a novel chiral piperazine.
    Kojima, Satoshi; Chabayashi, Takashi; Umeda, Yasuhiro; Iwamoto, Akihisa; Tanabe, Kazuhisa; Ohkata, Katsuo.
    Heterocycles, 2008, 75, 1493-1501.
  • Recent progress regarding regio-, site-, and stereoselective formation of oxetanes in Paterno-Buchi reactions.
    Abe, Manabu.
    J. Chin. Chem. Soc. 2008, in press (As an Invited Paper).
  • Oxidation of archaeal peroxiredoxin involves a hypervalent sulfur intermediate.
    Nakamura, T.; Yamamoto, T.; Abe, M.; Matsumura, H.; Hagihara, Y.; Goto, T.; Yamaguchi, T.; Inoue, T.
    Proc. Natl. Acad. Sci. U.S.A. 2008, 105, 6238-6242.
  • Stereospecific pseudorotation of diastereomeric anti-apicophilic spirophosphoranes: A novel stereochemical transformation involving 10-P-5 phosphoranes.
    Kojima, Satoshi; Nakamoto, Masaaki; Akiba, Kin-ya.
    Eur. J. Org. Chem. 2008, 35, 1715-1722.
  • Stereomutation and experimental determination of the relative stability of diastereomeric O-equatorial anti-apicophilic spirophosphoranes.
    Jaig, Xin-Dong; Matsukawa, Shiro; Yamamichi, Hideaki; Kakuda, Ken-ichiro; Kojima, Satoshi; Yamamoto, Yohsuke.
    Eur. J. Org. Chem. 2008, 35, 1392-1405.
  • Elucidation of inhibitors in the dimerization of acrylonitrile using
    [RuCl2(DMSO)4/CH3CH2COONa/DMSO/o-benzoylbenzoic acid] as catalyst.
    Kashiwagi, Kohichi; Sugise, Ryoji; Shimakawa, Toshihiro; Matuura, Tunao; Shirai, Masasho.
    J. Mol. Catal. A. Chem. 2008, 286, 120-123.
  • Three new glycolipids with cytolytic activity from cultureed marine dinoflagellate
    Heterocapsa circularisquama.
    Hiraga, Yoshikazu; Shikano, Tatsuya; Triana, Widianti; Ohkata, Katsuo.
    Natural Product Research, 2008, 22, 649-657.

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2007

  • Improvement of catalyst activity in the Ru-catalyzed dimerization of acrylonitrile by using diphenyl ether as a solvent.
    Kashiwagi, Kohichi; Sugie, Ryoji; Shimakawa, Toshihiro; Matuura, Tunao.
    Chem. Lett. 2007, 36, 1384-1385.
  • Notable effect of an electron-withdrawing group at C3 on the selective formation of alkylidenecyclobutanes in the thermal denitrogenation of 4-spirocyclopropane-1-pyruazolines.
    Nonstatistical dynamics effects in the denitrogenation reactions.
    Hamaguchi, Masashi; Nakaishi, Masahiro; Nagai, Toshikazu; Nakamura, Takeshi; Abe, Manabu.
    J. Am. Chem. Soc. 2007, 129, 12981-12988.
  • Influence of co-solvents in the highly efficient selective monohydrolysis of a symmetric diester.
    Niwayama, Satomi; Wang, Hezhen; Hiraga, Yoshikazu; Clayton, J. Cole.
    Tetrahedron Letters, 2007, 48, 8508-8510.
  • Rate acceleration of phosphoric acid-catalyzed Diels-Alder reaction by internal hydrogen-bonding of adjacent hydroxy group.
    Takagi, Ryukichi; Kondo, Asako; Ohkata, Katsuo.
    J. Mol. Catal. A. Chem. 2007, 278, 120-126.
  • Studies on ring-closing metathesis for the formation of the 11 membered ring system of daphnezomine C.
    Tanabe, Kazuhisa; Fujie, Ayako; Ohmori, Naoki; Hiraga, Yoshikazu; Kojima, Satoshi; Ohkata, Katsuo.
    Bull. Chem. Soc. Jpn. 2007, 80, 1597-1604.
  • Stereoselective total synthesis of (+)-scyphostatin via a π-facially selective Diels-Alder reaction.
    Takagi, Ryukichi; Miyanaga, Wataru; Tojo, Kengo; Tsuyumine, Shinjiro; Ohkata, Katsuo.
    J. Org. Chem., 2007, 72, 4117-4125.
  • Ruthenium-catalyzed dimerization of acrylonitrile in the presence of carboxylic acids Kashiwagi, Kohich; Sugie, Ryoji; Shimakawa, Toshihiro; Matuuta, Tunao; Shirai, Masashi.
    J. Mol. Catal. A. Chem. 2007, 264, 9-16.
  • Synthesis and application of a bidentate ligand based on decafluoro-3-phenyl-3-pentanol: steric effect of pentafluoroethyl groups on the stereomutation of O-equatorial C-apical spirophosphoranes.
    Jiang, Xin-Dong; Kakuda, Ken-ichiro; Matsukawa, Shiro; Yamamichi, Hideaki; Kojima, Satoshi; Yamamoto, Yohsuke.
    Chem. Asian J. 2007, 2, 314–323.
  • Stereochemical investigation on the construction of poly-functionalized bicyclo[3.3.1]nonenones by successive Michael reactions of 2-cyclohexenones.
    Takagi, Ryukichi; Miwa, Yukiko; Nerio, Takashi; Inoue, Yuta; Matsumura, Shuji; Ohkata, Katsuo.
    Org. Biomol. Chem. 2007, 5, 286-300.

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2006

  • Asymmetric synthesis of activated cyclopropanes catalyzed by cinchonidine as a chiral Brønsted base.
    Kojima, Satoshi; Suzuki, Maki; Watanabe, Akito; Ohkata, Katsuo.
    Tetrahedron Lett. 2006, 47, 9061-9065.
  • Experimental determination of the nN→σ*p-O interaction energy of O-equatorial C-apical phosphoranes bearing a primary amino group.
    Adachi, Takahiro; Matsukawa, Shiro; Nakamoto, Masaaki; Kajiyama, Kazumasa; Kojima, Satoshi; Yamamoto, Yohsuke; Akiba, Kin-ya; Re, Suyong; Nagase, Shigeru.
    Inorg. Chem. 2006, 45, 7269-7277.
  • A new method for the formation of anti-apicophilic (O-cis) spirophosphoranes-kinetic studies on the stereomutation of O-cis arylspirophosphoranes to their O-trans isomers.
    Kajiyama, Kazumasa; Yoshimura, Miki; Kojima, Satoshi; Akiba, Kin-ya.
    Eur. J. Org. Chem. 2006, 2739-2746.
  • Temperature-dependence on enantioselectivity in the desymmetrization and monoacetylation of 2-mono- and 2,2-di-substituted 1,3-propanediols by a novel lipase isolated from yeast Cryptococcus spp. S-2.
    Lin, Chunlei; Hiraga, Yoshikazu; Masaki, Kazuo; Iefuji, Haruyuki; Ohkata, Katsuo.
    Biocatalysis and Biotransformation, 2006, 24, 390-395.
  • A new method for the isolation of S-adenosylmethionine (SAM)-accumulating yeast.
    Shobayashi, Megumi; Mukai, Nobuhiko; Uwashita, Kazuhiro; Hiraga, Yoshikazu; Iefuji, Haruyuki.
    Applied Microbiology and Biotechnology. 2006, 69, 704-710.
  • Liner relationship between activity of a new Ru-catalyst and acidity of substituted benzoic acids in the dimerization of acrylonitirile.
    Kashiwagi, Kohichi; Sugie, Ryoji; Shimakawa, Toshihiro; Matuura, Tunao, Shirai, Masashi.
    Chem. Lett. 2006, 35, 186-187.
  • Two-parameter analysis of solvent effects on selectivity in chemical reactions: Information of polarity and activation volume at the transition state in organic and enzymatic reactions.
    Lin, Chunlei; Hiraga, Yoshikazu; Ohkata, Katsuo.
    Chem. Lett. 2006, 35, 208-209.
  • The effect of substituents on the pyridine ring in the diastereoselective cyclopropanation reaction of pyridinium ylides bearing as 8-phenylmenthyl ester group.
    Kojima, Satoshi; Fujitomo, Kouji; Itoh, Yoshiaki; Hiroike, Kyoko; Murakami, Masaaki; Ohkata, Katsuo.
    Heterocycles, 2006, 67, 679-694.
  • The ligand-exchange process of P-Hapical phosphoranes and the thermal formation and pseudorotation of anti-apicophilic spirophosphoranes.
    Kojima, Satoshi; Kajiyama, Kazumasa; Nakamoto, Masaaki; Matsukawa, Shiro; Akiba, Kin-ya.
    Eur. J. Org. Chem. 2006, 218-234.
  • Comparison of the chiral recognition of prochiral substrates in the acetylation by a novel lipase (CSL) from the yeast, Cryptococcus spp. S-2 with immobilized PPL. Enzyme-catalyzed desymmetrization and asymmetrization of prochiral 2,2-disubstituted 1,3-propanediols by CSL and immobilized PPL.
    Lin, Chunlei; Hiraga, Yoshikazu; Masaki, Kazuo; Iefuji, Haruyuki; Ohkata, Katsuo.
    J. Mol. Catal. B. Enzym. 2006, 38, 1-10.

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2005

  • One-pot synthesis of adamantane derivatives by domino Michael reactions from ethyl 2,4-dioxocyclohexanecarboxylate.
    Takagi, Ryukichi; Miwa, Yukiko; Matsumura, Shuji; Ohkata, Katsuo.
    J. Org. Chem. 2005, 70, 8587-8689.
  • Application of organocerium reagents for the efficient conversion of Z-α,β-unsaturated Weinreb amides to Z-α,β-unsaturated ketones.
    Kojima, Satoshi; Hidaka, Tsugihiko; Yamakawa, Atsushi.
    Chem. Lett. 2005, 34, 470-471.
  • Synthesis of a 4,5-epoxy-2-cyclohexene-1-one derivative via epoxide ring opening, 1,3-carbonyl transposition and epoxide ring regeneration: a synthetic study on a scyphostatin analogue.
    Takagi, Ryukichi; Tojo, Kengo; Iwata, Masato; Ohkata, Katsuo.
    Org. Biomol. Chem. 2005, 3, 2031-2036.

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2004

  • Synthesis of β-monosubstituted α,β-unsaturated amides with Z-selectivity using diphenylphosphonoacetamide.
    Kojima, Satoshi; Hidaka, Tsugihiko; Ohba, Yuko.
    Heteroatom Chemistry, 2004, 15, 515-523.
  • Stereoselectivity control by oxaspiro rings during Diels-Alder cycloadditions to cross-conjugated cyclohexadienes: The syn oxygen phenomenon.
    Ohkata, Katsuo; Tamura, Yukiko; Brandon, B. Shetuni; Takagi, Ryukichi; Miyanaga, Wataru; Kojima, Satoshi; Leo, A. Paquette.
    J. Am. Chem. Soc. 2004, 126, 16783-16792.
  • Highly (Z)-selective synthesis of β-monosubstituted α,β-unsaturated cyanides using the Peterson reaction.
    Kojima, Satoshi, Fukuzaki, Tomohide; Yamakawa, Atsushi; Murai, Yutaka.
    Org. Lett. 2004, 6, 3917-3920.
  • Construction of the bicyclo[3.3.1]nonenone core by successive Michael reactions of 2-cyclohexenone derivatives.
    Takagi, Ryukichi; Nerio, Takashi; Miwa, Yukiko; Matsumura, Shuji; Ohkata, Katsuo.
    Tetrahedron Lett. 2004, 45, 7401-7405.
  • 1H and 13C NMR spectroscopic studies of half-esters from monohydrolysis of dialkyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylates.
    Hiraga, Yoshikazu; Niwayama, Satomi.
    Spectroscopy, 2004, 18, 469-483.
  • Influence of polymerization degree of poly-L-leucine catalyst and substituent effect on the Julia-Colonna asymmetric epoxidation of benzalacetophenones.
    Takagi, Ryukichi; Shanaz, Begum; Siraki, Akiko; Yoneshige, Arata; Koyama, Kin-ichirou; Ohkata, Katsuo.
    Heterocycles, 2004, 64, 129-141.
  • Stereoselective synthesis of activated cyclopropanes with an α-pyridinium acetamide bearing an 8-phenylmenthyl group as the chiral auxiliary.
    Kojima, Satoshi; Hiroike, Kyoko; Ohkata, Katsuo.
    Tetrahedron Lett. 2004, 45, 3565-3568.
  • Stereoselective synthesis of the hydrophobic side chain moiety of Scyphostatin.
    Takagi, Ryukichi; Tsuyumine, Shinjiro; Nishitani, Hiroko; Miyanaga, Wataru; Ohkata, Katsuo.
    Aust. J. Chem. 2004, 439-447.
  • Synthetic study of an analogue of the hydrophilic moiety of Scyphostatin via π-facial selective Diels-Alder reaction.
    Miyanaga, Wataru; Takagi, Ryukichi; Ohkata, Katsuo.
    Heterocycles, 2004, 64, 75-91.
  • Influence of solvent viscosity on rate in the hydrolysis of dipeptides by carboxypeptidase-Y.
    Kanosue, Yoshifumi; Kojima, Satoshi; Ohkata, Katsuo.
    J. Phys. Org. Chem. 2004, 17, 448-457.
  • Relationship between the hydrophobicity of dipeptides and the Michaelis-Menten constant Km of their hydrolysis by carboxypeptidase-Y and carboxypeptidase-A.
    Kanosue, Yoshifumi; Kojima, Satoshi; Hiraga, Yoshikazu; Ohkata, Katsuo.
    Bull. Chem. Soc. Jpn. 2004, 77, 1187-1193.
  • Facial selectivity in nucleophilic epoxidation of 3-aryl-2-phosphonoacrylates induced by the (-)-8-phenylmenthyl moiety as a chiral auxiliary.
    Shahnaz, Begum; Md. Moshfiqur, Rahman; Takagi, Ryukichi; Ohkata, Katsuo.
    Heterocycles, 2004, 62, 251-262.
  • Computational study on conformational features of protonated 5H,7H-dibenzo[b,g][1,5]dithiocin oxides by ab initio MO calculations.
    Okada, Keiji; Tanaka, Masato; Ohkata, Katsuo.
    Heterocycles, 2004, 62, 235-249.

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2003

  • New exo/endo selectivity observed in monohydrolysis of dialkyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylates.
    Niwayama, Satomi; Hiraga, Yoshikazu.
    Tetrahedron Lett. 2003, 44, 8567-8570.
  • The relation between Sb-I bond lengths and charges on iodine atoms determined by I-127 Mossbauer spectroscopy.
    Takeda, M.; Takahashi, M; Akiba, Kin-ya; Kojima, Satoshi.
    J. Radioanal. Chem. 2003, 255, 275-278.
  • Computational study of base-induced skeletal conversion via a spirocyclic intermediate in dibenzodithiocinium derivatives by ab initio MO calculations.
    Okada, keiji; Tanaka, Masato; Takagi, Ryukichi.
    J. Phys. Org. Chem. 2003, 16, 271-278.
  • π-Facial selectivity in Diels-Alder reactions of cross-conjugated ketones bearing an oxa-spiro-ring with sterically undemanding dienes.
    Takagi, Ryukichi; Miyanaga, Wataru; Tamura, Yukiko; Kojima, Satoshi; Ohkata, Katsuo.
    Heterocycles, 2003, 60, 785-790.
  • Sterol composition of a cultured marine dinoflagellate, Heterocapsa circularisquama.
    Kaku, Ken; Hiraga, Yoshikazu.
    Natural Product Res. 2003, 17, 263-267.

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2002

  • Application of [5+2] cycloaddition toward the functionalized bicyclo[4.3.1]decane ring system: synthetic study of Phomoidride B (CP-263,114).
    Ohmori, Naoki.
    J. Chem. Soc. Perkin Trans. 1, 2002, 755-767.
  • Efficient synthesis of a 4,5-epoxy-2-cyclohexen-1-one derivative bearing a spirolactone via a Diels-Alder reaction with high π-facial selectivity: a synthetic study toward scyphostatin.
    Takagi, Ryukichi; Miyanaga, Wataru; Tamura, Yukiko; Ohkata, Katsuo.
    Chem. Commun. 2002, 2096-2097.
  • Z-Selective preparation of β-monosubstituted α,β-unsaturated amides using diphenylphosphonoacetamides.
    Kojima, Satoshi; Hidaka, Tsugihiko; Ohba, Yuko; Ohkata, Katsuo.
    Phosphorus, Sulfur Silicon Relat. Elem. 2002, 177, 729-732.
  • Z-Selective synthesis of α,β-unsaturated amides with triphenylsilylacetamides.
    Kojima, Satoshi; Inai, Hiroki; Hidaka, Tsugihiko; Fukuzaki, Tomohide; Ohkata, Katsuo.
    J. Org. Chem. 2002, 67, 4093-4099.
  • Hydrophobicity and structure of 1,2,4-triazole derivatives bearing 1-carbamoyl and 3-sulfonyl groups.
    Ohkata, Katsuo; Yano, Tomoyuki; Kojima, Satoshi; Hiraga, Yoshikazu, Yoshii, Tomoko; Hori, Masahiro.
    Bull. Chem. Soc. Jpn. 2002, 75, 567-574.
  • Stereochemical considerations on the stereoselective cyclopropanation reactions of 3-aryl-2-phosphonoacrylates induced by the (-)-8-phenylmenthyl group as a chiral auxiliary.
    Takagi, Ryukichi; Hashizume, Miki; Nakamura, Minoru; Begum, Shahnaz; Hiraga, Yoshikazu; Kojima, Satoshi; Ohkata, Katsuo.
    J. Chem. Soc. Perkin Trans. 1, 2002, 179-190.
  • A method for determining the difference in relative apicophilicity of carbon-containing substituents of 10-P-5 phosphoranes.
    Matsukawa, Shiro; Kajiyama, Kazumasa; Kojima, Satoshi; Furuta, Shin-Ya; Yamamoto, Yohsuke; Akiba, Kin-ya.
    Angew. Chem. Int. Ed. 2002, 41, 4718-4722.
  • Stereospecific stilbene formation from β-hydroxy-α,β-diphenylethylphosphoranes. Mechanistic proposals based upon stereochemistry.
    Kojima, Satoshi; Kawaguchi, Kazuhiro; Matsukawa, Shiro; Akiba, Kin-ya.
    Tetrahedron, 2002, 59, 255-265.
  • Characteristic reactions and properties of C-apical O-equatorial (O-cis) spirophosphoranes: Effect of the σP-O orbital in the equatorial plane and isolation of a hexacoordinate oxaphosphetane as an intermediate of the Wittig type reaction of 10-P-5 phosphoranes.
    Matsukawa, Shiro; Kojima, Satoshi; Kajiyama, Kazumasa; Yamamoto, Yohsuke; Akiba, Kin-ya; Re, Suyong; Nagase, Shigeru.
    J. Am. Chem. Soc. 2002, 124, 13154-13170.
  • First isolation and characterization of an anti-apicophilic spirophosphorane bearing an oxaphosphetane ring: A model for the possible reactive intermediate in the Wittig reaction.
    Kojima, Satoshi; Sugino, Masaya; Matsukawa, Shiro; Nakamoto, Masaaki; Akiba, Kin-ya.
    J. Am. Chem. Soc. 2002, 124, 7674-7675.
  • Stereomutation and apicophilicity of diastereomeric spirophosphoranes (10-P-5).
    Nakamoto, Masaaki; Kojima, Satoshi; Matsukawa, Shiro; Yamamoto, Yohsuke; Akiba, Kin-ya.
    J. Organomet. Chem. 2002, 643-644, 441-452.
  • Highly Z-selective synthesis of disubstituted α,β-unsaturated cyanides and amides using 10-P-5 Wittig type reagents.
    Kojima, Satoshi; Kawaguchi, Kazuhiro; Matsukawa, Shiro; Uchida, Keiichiro; Akiba, Kin-ya.
    Chem. Lett. 2002, 170-171.
  • A new digalactosyl diacylglycerol from a cultured marine dinoflagellate Heterocapsa circularisquama.
    Hiraga, Yoshikazu; Kaku, Ken; Omoda, Daisuke; Sugihara, Kinuko; Hosoya, Hiroshi; Hino, Mizuki.
    J. Nat. Prod. 2002, 65, 1494-1496.

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2001

  • Highly stereoselective 7-membered ring synthesis based upon the oxidopyrylium-alkene [5+2]cycloaddition reaction.
    Ohmori, Naoki; Miyazaki, Toru; Kojima, Satoshi; Ohkata, Katsuo.
    Chem. Lett. 2001, 906-907.
  • Synthetic study of phomoidride B (CP-263,114); utilization of the oxidopyrylium [5+2]cycloaddition.
    Ohmori, Naoki.
    Chem. Commun. 2001, 1552.
  • Stereoselective cyclopropanation of 3-aryl-2-phosphonoacrylates induced by the (-)-8-phenylmenthyl group as a chiral auxiliary.
    Takagi, Ryukichi; Nakamura, Minoru; Hashizume, Miki; Kojima, Satoshi; Ohkata, Katsuo.
    Tetrahedron Lett. 2001, 42, 5891-5895.
  • Kinetic evidence for the hydrophobic atmosphere of the catalytic cavity in carboxypeptidase Y based on a linear relationship between Michaelis-Menten constant Km and hydrophobicity of the substrates.
    Kanosue, Yoshifumi; Hiraga, Yoshikazu; Kojima, Satoshi; Ohkata, Katsuo.
    Chem. Lett. 2001, 418-419.
  • Stereoselectivity in the Darzens condensation of substituted cyclohexanones with (-)-8-phenylmenthyl α-chloroacetate.
    Shinohara, Yoshihiro; Ohba, Yuko; Takagi, Ryukichi; Kojima, Satoshi; Ohkata, Katsuo.
    Heterocycles, 2001, 55, 9-12.
  • Stereoselective formation of trans-2,5-disubstituted terahydropyranes by intramolecular nucleophilic substitution and a computational study at the AM1 level.
    Takagi, Ryukichi; Nishitani, Hiroko; Takenami, Shigeharu; Okada, Kazumasa; Kojima, Satoshi; Ohkata, Katsuo.
    Bull. Chem. Soc. Jpn. 2001, 74, 1901-1907.
  • Preparation and reactions of water stable hypervalent 10-Sn-5 allyl ate complexes/
    Kojima, Satoshi; Kondoh, Fumihiro; Kawakami, Jun-ya; Yamamoto, Yohsuke; Akiba, Kin-ya.
    Heteroatom Chem. 2001, 12, 424-430.
  • Purification and characterization of a O-methyltransferase capable of methylating 2-hydroxy-3-alkylpyrazine from Vitis vinifera L. (cv. Cabernet Sauvignon).
    Hashizume, Katsumi; Tozawa, Kazuyuki; Hiraga, Yoshikazu, Aramaki, Isao.
    Biosci. Biotech. Biochem. 2001, 65, 2213-2219.
  • Canthin-6-one and β-carboline alkaloids from Eurycoma harmandiana.
    Kanchanapoom, Tripetch; Kasai, Ryoji; Chumsri, Phannipha; Hiraga, Yoshikazu; Yamasaki, Kazuo.
    Phytochemistry, 2001, 56, 383-386.
  • Lignan glucosides from Acanthus ilicifolius.
    Kanchanapoom, Tripetch; Kamel, Mohamed, Salah; Kasai, Ryoji; Yamasaki, Kazuo; Picheansoonthon, Chayan; Hiraga, Yoshikazu.
    Phytochemistry, 2001, 56, 369-372.
  • Megastigmane and iridoid glucosides from Clerodendrum inerme.
    Kanchanapoom, Tripetch; Kasai, Ryoji; Chumsri, Phannipha; Hiraga, Yoshikazu; Yamasaki, Kazuo.
    Phytochemistry, 2001, 58, 333-386.
  • Benzoxazinoid glucosides from Acanthus.
    Kanchanapoom, Tripetch, Kamel, Mohamed, Salah; Kasai, Ryoji, Picheansoonthon, Chayan; Hiraga, Yoshikazu; Yamasaki, Kazuo.
    Phytochemistry, 2001, 58, 637-640.
  • Highly selective one-pot synthesis of spirophosphoranes exhibiting reversed apicophilicity by oxidation of dianions generated from P-H spirophosphorane.
    Kajiyama, Kazumasa; Yoshimune, Miki; Nakamoto, Masaaki; Matsukawa, Shiro; Kojima, Satoshi; Akiba, Kin-ya.
    Org. Lett. 2001, 3, 1873-1875.

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2000

  • Synthesis of hippospongic acid A analogues designed for investigating the structure-activity relationship of its biological activity.
    Hiraga, Yoshikazu; Ago, Mariko; Tokumasu, Munetaka; Kaku, Ken; Ohkata, Katsuo.
    Aust. J. Chem. 2000, 53, 909-912.
  • Highly Z-selective synthesis of α,β-unsaturated amides with the Peterson reaction between α-silylamides and aldehydes.
    Kojima, Satoshi; Inai, Hiroki; Hidaka, Tsugihiko; Ohkata, Katsuo.
    Chem. Commun. 2000, 1795-1796.
  • The Julia-Colonna asymmetric epoxidation reaction of chalcone catalyzed by length defined oligo-L-leucine; Importance of the N-terminal functional group and helical structure of the catalyst in the asymmetric induction.
    Takagi, Ryukichi; Manabe, Toshiki; Shiraki, Akiko; Yoneshige, Arata; Hiraga, Yoshikazu; Kojima, Satoshi; Ohkata, Katsuo.
    Bull. Chem. Soc. Jpn. 2000, 73, 2115-2121.
  • The Julia-Colonna type asymmetric epoxidation reaction catalyzed by soluble oligo-L-leucines containing an α-aminoisobutyric acid residue: importance of helical structure of the catalyst on asymmetric induction.
    Takagi, Ryukichi; Shiraki, Akiko; Manabe, Toshiki; Kojima, Satoshi; Ohkata, Katsuo.
    Chem. Lett. 2000, 366-367.
  • Stereoselective formation of activated cyclopropanes with pyridinium ylides bearing a (-)-8-phenylmenthyl group as the chiral auxiliary.
    Kojima, Satoshi; Fujitomo, Kouji; Shinohara, Yoshihiro; Shimizu, Makoto; Ohkata, Katsuo.
    Tetrahedron Lett. 2000, 41, 9847-9851.

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1999

  • Synthesis of rac-hippospongic acid A and revision of the structure.
    Tokumasu, Munetaka; Ando, Hiroshi; Hiraga, Yoshikazu; Kojima, Satoshi; Ohkata, Katsuo.
    J. Chem. Soc. Perkin Trans. 1, 1999, 489-496.
  • Asymmetric synthesis of rhopaloic acid A analogs and their biological properties.
    Nishitani, Hiroko; Sasaoka, Asami; Tokumasu, Munetaka; Ohkata, Katsuo.
    Heterocycles, 1999, 50, 35-38.
  • Preparation and kinetic study of antiapicophilicity pseudorotamers of substituted spirophosphoranes with martin ligand.
    Akiba, Kin-ya; Kajiyama, Kazumasa; Yoshimune, Miki; Nakamoto, Masaaki; Kojima, Satoshi.
    Phosphorus, Sulfur Silicon Relat. Elem. 1999, 144-146, 561-564.
  • Ion-transport activity of phenylpentanoic acids occurring in the roots of Athyrium yokoscense.
    Hiraga, Yoshikazu; Kurokawa, Masashi; Guo, Jian-Ru; Suga, Takayuki.
    Biosci. Biotechnol. Biochem. 1999, 63, 958-960.

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1998

  • Selective ring-expansion of oxirane into tetrahydropyran and tetrahydrofuran by reagent-controlled conditions, Tokumasu, Munetaka; Sasaoka, Asami; Hiraga, Yoshikazu; Ohkata, Katsuo.
    J. Chem. Res. Synop. 1998, 500-501, 2217-2236.
  • Stereoselective synthesis of (+)-rhopaloic acid A and (-)-ent- and (±)-rac-rhopaloic acid A.
    Takagi, Ryukichi; Sasaoka, Asami; Nishitani, Hiroko; Kojima, Satoshi; Hiraga, Yoshikazu; Ohkata, Katsuo.
    J. Chem. Soc. Perkin Trans. 1, 1998, 925-934.
  • Asymmetric induction in Darzens condensation by means of (-)-8-phenylmenthyl and (-)-menthyl auxiliaries.
    Takagi, Ryukichi; Kimura, Jyunji; Shinohara, Yoshihiro; Ohba, Yuko; Takezono, Kyoko; Hiraga, Yoshikazu; Kojima, Satoshi; Ohkata, Katsuo.
    J. Chem. Soc. Perkin Trans. 1, 1998, 689-698.
  • 3-Hydroxy-5,6-epoxy-β-ionone as germination inhibitory active constituent in Athyrium yokoscense.
    Kurokawa, Masashi; Hirose, Takayuki; Sugata, Yuji; Tokumasu, Munetaka; Hiraga, Yoshikazu; Suga, Takayuki.
    Natural Product Lett. 1998, 12, 35-40.
  • Allelopathic substances in ferns.
    Suga, Takayuki; Hiraga, Yoshikazu.
    Recent Research Developments in Phytochemistry, 1998, 2 (Pt.2 ), 429-454.
  • Evidence for biosynthetic meta-hydroxylation of benzoic acid by means of isolation of only meta-functionalized phenylpentanoic acids from Athyrium yokoscense.
    Hiraga, Yoshikazu; Kurokawa, Masashi; Maeda, Takayoshi; Guo, Jian Ru; Suga, Takayuki.
    Natural Product Lett. 1998, 11, 187-192.

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1997

  • Stereoselectivity in the formation of 2,5-disubstituted tetrahydropyrans by intramolecular hetero-Michael addition.
    Takagi, Ryukichi; Sasaoka, Asami; Kojima, Satoshi; Ohkata, Katsuo.
    Heterocycles, 1997, 45, 2313-2316.
  • Asymmetric induction in intramolecular [5+2]cycloaddition of 2-(4-alkenyl)-5-benzoxy (or 5-silyloxyl)-4-pyrones involving migration of the pyrone O-5 group to O-4.
    Ohmori, Naoki; Yoshimura, Miki; Ohkata, Katsuo.
    Heterocycles, 1997, 45, 2097-2100.
  • Synthesis of norsesterterpene rac- and ent-rhopaloic acid A.
    Takagi, Ryukichi; Sasaoka, Asami; Kojima, Satoshi; Ohkata, Katsuo.
    Chem. Commun. 1997, 1887-1888.
  • (-)-Loliolide and other germination inhibitory active constituents in Equisetum arvense.
    Hiraga, Yoshikazu; Taino, Kazuya; Kurokawa, Masashi; Takagi, Ryukichi; Ohkata, Katsuo.
    Natural Product. Lett. 1997, 10, 181-186.
  • Selective conversion of bromo oxirane into tetrahydropyranylacrylate by epoxide ring opening.
    Tokumasu, Munetaka; Sasaoka, Asami; Takagi, Ryukichi; Hiraga, Yoshikazu; Ohkata, Katsuo.
    Chem. Commun.1997, 875-876.
  • Stereoselectivity in the formation of 2,5-disubstituted tetrahydropyrans by intramolecular hetero-Michael addition.
    Takagi, Ryukichi; Sasaoka, Asami; Kojima, Satoshi; Ohkata, Katsuo.
    Heterocycles, 1997, 45, 2313-2316.

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1996

  • Asymmetric Darzens condensation of ketones with α-chloroacetates by means of (-)-8-phenylmenthyl auxiliary.
    Ohkata, Katsuo; Kimura, Jyunji; Shinohara, Yoshihiro; Takagi, Ryukichi; Hiraga, Yoshikazu.
    Chem. Commun. 1996, 2411-2412.

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