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Recent Main Publications

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49 Tripetch Kanchanapoom, Sapsuang Klai-on, Ryoji Kasai, Hideaki Otsuka, and Kazuo Yamasaki (2002)
A New Tricyclic Iridoid Glucoside from the Thai Medicinal Plant, Rothmannia wittii
Heterocycles, 57, 2469-2412 [Full Text (pdf)]

48
Liva Harinantenaina, Ryoji Kasai, Kazuo Yamasaki (2002)
Cussosaponin A-E, Triterpene Saponins from the Leaves of Cussonia racemosa, a Malagasy Endemic Plant
Chem. Pharm. Bull., 50, 1290-1293 [Summary] [Full Text (pdf)]

47
Liva HARINANTENAINA, Ryoji KASAI, Kazuo YAMASAKI (2002)
ent-Kaurane Diterpenoid Glycoside from a Malagasy Endemic Plant, Cussonia vantsilana
Phytochemistry, 61, 367-372. [SummaryPlus] [Full Text (pdf)]

46
Tripetch Kanchanapoom, Ryoji Kasai and Kazuo Yamasaki (2002)
Iridoid and phenolic diglycosides from Canthium berberidifolium
Phytochemistry, 61, 461-464. [SummaryPlus] [Full Text (pdf)]

45
Liva HARINANTENAINA, Ryoji KASAI, Kazuo YAMASAKI (2002)
A New ent-Kaurane Diterpenoid Glycoside from the Leaves of Cussonia bojeri, a Malagasy Endemic Plant
Chem. Pharm. Bull., 50(8),1122-1123 [Full Text (pdf)]

44
Tripetch KANCHANAPOOM, Ryoji KASAI, Kazuhiro OHTANI, Marta ANDRIANTSIFERANA, Kazuo YAMASAKI (2002)
Pregnane and Pregnane Glycosides from the Malagasy Plant, Cynanchum aphyllum
Chem. Pharm. Bull., 50(8),1031-1034 [Full Text (pdf)]

43
T. Kanchanapoom, K. Suga, R. Kasai, K. Yamasaki, M. S. Kamel, and M. H. Mohamed (2002)
Stilbene and 2-Arylbenzofuran Glucosides from the Rhizomes of Schoenocaulon officinale
CHEMICAL & PHARMACEUTICAL BULLETIN, 50, 863-865 [Full Text (pdf)]

42
L. R. R. Harinantenaina, R. Kasai, and K. Yamasaki (2002)
Ent-kaurane Diterpenoid Glycosides from the Leaves of Cussonia racemosa, a Malagasy Endemic Plant
CHEMICAL & PHARMACEUTICAL BULLETIN, 50(2), 268 [Abstract] [Full Text (pdf)]

41
T. Kanchanapoom, R. Kasai, K. Yamasaki (2002)
Iridoid glucosides from Thunbergia laurifolia
Phytochemistry, 60, 769-771 [Full Text (pdf)]

40
R.R. Harinantenaina Liva, R. Kasai, K. Yamasaki (2002)
Clerodane and labdane diterpene glycosides from a Malagasy endemic plant, Cussonia racemosa
Phytochemistry, 60, 339-343 [Full Text (pdf)]

39
Takeo Hayashi, Haruko Maruyama, Royji Kasai, Katsuji Hattori, Shunsuke Takasuga, Osamu Hazeki, Kazuo Yamasaki, Takashi Tanaka (2002)
Ellagitannins from Lagerstroemia speciosa as Activators of Glucose Transport in Fat Cells, Planta Medica 68, 173-175. [Abstract] [Full Text (pdf)]

38
Tripetch Kanchanapoom, Ryoji Kasai, Phannipha Chumsri, Krisana Kraisintu and Kazuo Yamasaki (2002)
Lotthanongine, an unprecedented flavonoidal indole alkaloid from the roots of Thai medicinal plant, Trigonostemon reidioides, Tetrahedron Letters 43, 2941-2943 [Full Text (pdf)]

37
Tripetch Kanchanapoom, Ryoji Kasai and Kazuo Yamasaki (2002)
Phenolic glycosides from Barnettia kerrii, Phytochemistry 59, 565-570. [Full Text (pdf)]

36
Tripetch Kanchanapoom, Ryoji Kasai and Kazuo Yamasaki (2002)
Phenolic glycosides from Markhamia stipulata, Phytochemistry 59, 557-563. [Full Text (pdf)]

35
Tripetch Kanchanapoom, Ryoji Kasai and Kazuo Yamasaki (2002)
Iridoid and phenolic glycosides from Morinda coreia, Phytochemistry 59, 551-556. [Full Text (pdf)]

34
Tripetch Kanchanapoom, Ryoji Kasai, Kazuo Yamasaki (2002)
Cucurbitane, hexanorcucurbitane and octanorcucurbitane glycosides from fruits of Trichosanthes tricuspidata
Phytochemistry, 59, 215-228. [Full Text (pdf)]

33
M.S. Kamel, M.H. Assaf, H.A. Hasanean, K. Ohtani, R. Kasai, K. Yamasaki (2001)
Monoterpene glucosides from Origanum syriacum
Phytochemistry, 58, 1149-1152. [Full Text (pdf)]

32
Tripetch. Kanchanapoom, Ryoji Kasai, Chayan Picheansoonthon, Kazuo Yamasaki (2001)
Megastigmane, aliphatic alcohol and benzoxazinoid glycosides from Acanthus ebracteatus
Phytochemistry, 58, 811-817. [Full Text (pdf)]

31
Tripetch Kanchanapoom, Mohamed Salah Kamel, Ryoji Kasai, Chayan Picheansoonthon, Yoshikazu Hiraga and Kazuo Yamasaki (2001)
Benzoxazinoid glucosides from Acanthus ilicifolius Phytochemistry, 58, 637-640. [Full Text (pdf)]

30
M. S. Kamel, M. H. Assaf, Y. Abe, K. Ohtani, R. Kasai and K. Yamasaki (2001)
Cardiac glycosides from Cryptostegia grandiflora Phytochemistry, 58, 537-542. [Full Text (pdf)]

29
Tripetch KANCHANAPOOM, Ryoji KASAI, Kazuo YAMASAKI (2001)
Acetylated Triterpene Saponins from the Thai Medicinal Plant, Sapindus emarginatus Chem. Pharm. Bull., 49, 1195-1197. [Full Text (pdf)]

28
Tripetch Kanchanapoom, Ryoji Kasai and Kazuo Yamasaki (2001)
Iridoid glucosides from Barleria lupulina, Phytochemistry, 58, 337-341 [Full Text (pdf)]

27
Tripetch Kanchanapoom, Ryoji Kasai, Phannipha. Chumsri, Yoshikazu Hiraga, Kazuo Yamasaki (2001)
Megastigmane and iridoid glucosides from Clerodendrum inerme Phytochemistry, 58, 333-336. [Full Text (pdf)]

26
Mohamed S. Kamel, Khaled M. Mohamed, Hashim A. Hassanean, Kazuhiro Ohtani, Ryoji Kasai and Kazuo Yamasaki (2001)
Acylated flavonoid glycosides from Bassia muricata, Phytochemistry, 57, 1259-1262 [Full Text (pdf)]

25
Tripetch Kanchanapoom, Ryoji Kasai and Kazuo Yamasaki (2001)
Lignan and phenylpropanoid glycosides from Fernandoa adenophylla, Phytochemistry, 57, 1245-1248 [Full Text (pdf)]

24
Tripetch Kanchanapoom, Ryoji Kasai, Phannipha Chumsri and Kazuo Yamasaki (2001)
Quassinoids from Eurycoma harmandiana, Phytochemistry, 57, 1205-1208 [Full Text (pdf)]

23
Vo Duy HUAN, Kazuhiro OHTANI, Ryoji KASAI, Kazuo YAMASAKI, and Nguyen Viet TUU (2001)
Sweet Pregnane Glycosides from Telosma procumbens
Chem. Pharm. Bull., 49, 453-460, [Abstract] [Structures] [Full Text (pdf)]

22
Tripetch Kanchanapoom, Ryoji Kasai, Phannipha Chumsri, Yoshikazu Hiraga and Kazuo Yamasaki (2001)
Canthin-6-one and -carboline alkaloids from Eurycoma harmandiana, Phytochemistry, 56, 383-386 [Full Text (pdf)]

21
Tripetch Kanchanapoom, Mohamed Salah Kamel, Ryoji Kasai, Kazuo Yamasaki, Chayan Picheansoonthon and Yoshikazu Hiraga (2001)
Lignan glucosides from Acanthus ilicifolius, Phytochemistry, 56, 369-372 [Full Text (pdf)]

20
Mohamed S. Kamel, Khaled M. Mohamed, Hashim A. Hassanean, Kazuhiro Ohtani, Ryoji Kasai and Kazuo Yamasaki (2000)
Iridoid and megastigmane glycosides from Phlomis aurea, Phytochemistry, Volume 55, 353-357 [Full Text (pdf)]

19
Khaled M. Mohamed, Hashim A. Hassanean, Kazuhiro Ohtani, Ryoji Kasai and Kazuo Yamasaki (2000)
Chalcanol glucosides from seeds of Trifolium alexandrinum, Phytochemistry, Volume 53, 401-404 [Full Text (pdf)]

18
Kasai R, Hara K, Dokan R, Suzuki N, Mizutare T, Yoshihara S, Yamasaki K., Major metabolites of ginseng sapogenins formed by rat liver microsomes. Chem Pharm Bull (Tokyo). 2000 Aug;48(8):1226-7. [Abstract]

17
Yobimoto K, Matsumoto K, Huong NT, Kasai R, Yamasaki K, Watanabe H., Suppressive effects of vietnamese ginseng saponin and its major component majonoside-R2 on psychological stress-induced enhancement of lipid peroxidation in the mouse brain.
Pharmacol Biochem Behav. 2000 Jul 1;66(3):661-5. [Abstract]

16
M. S. Kamel, K. Ohtani, H. A. Hassanean, A. A. Khalifa, R. Kasai, K. Yamasaki, Triterpenoidal saponins from Cornulaca monacantha. Pharmazie, 55, 460-462 (2000). [Abstract]

15
Konoshima T, Takasaki M, Ichiishi E, Murakami T, Tokuda H, Nishino H, Duc NM, Kasai R, Yamasaki K. Cancer chemopreventive activity of majonoside-R2 from Vietnamese ginseng, Panax vietnamensis. Cancer Lett. 1999 Dec 1;147(1-2):11-6. [Abstract]

14
K. Yamasaki, Non-cyanogenic cyanoglucosides, Advances in Plant Glycosides, Chemistry and Biology, ed. C-Y. Yang and O. Tanaka, 335-345 (1999).

13
K. M. Mohamed, M. M. Mohamed, K. Ohtani, R. Kasai and K. Yamasaki, Megastigman glycosides from seeds of Trifolium alxandrinum, Phytochemistry, 50, 859-862 (1999). [Full Text (pdf)]

12
N. T. T. Huong, K. Matsumoto, R. Kasai, K. Yamasaki and H. Watanabe, In vitro antioxidant activity of Vietnamese ginseng saponin and its components, Biol. Pharm. Bull., 21, 978-981, (1998). [Abstract]

11
T. Konoshima, M. Takasaki, H. Tokuda, H. Nishina, N. M. Duc, R. Kasai, K. Yamasaki, Anti-tumor-promoting activity of majonoside-R2 from Vietnamese ginseng, Panax vietnamensis Ha et Grushv. (I), Biol. Pharm. Bull., 21, 834-838 (1998). [Abstract]

10
Ko-Ichiro Teshima, Tetsuo Kaneko, Kazuhiro Ohtani, Ryoji Kasai, Sorasak Lhieochaiphant, Chayan Picheansoonthon and Kazuo Yamasaki, , Sulfur-containing glucosides from Clinacanthus nutans, Phytochemistry, 48, Pages 831-835 (1998) [Full Text (pdf)]

9
Huong NT, Matsumoto K, Yamasaki K, Duc NM, Nham NT, Watanabe H., Majonoside-R2, a major constituent of Vietnamese ginseng, attenuates opioid-induced antinociception. Pharmacol Biochem Behav. 57, 285-91(1997). [Abstract]

8
N. T. T. Huong, K. Matsumoto, K. Yamasaki and H. Watanabe, Majonoside-R2 Reverses Social Isolation Stress-Induced Declease in Pentobarbital Sleep in Mice: Possible Involvement of Neuroactive Steroids, Life Science, 61, 395-402 (1997). [Abstract]

7
Y. Wang, K. Ohtani, R. Kasai, K. Yamasaki, Steroidal saponins from fruits of Tribulus terrestris, Phytochemistry, 45, 811-817 (1997). [Full Text (pdf)]

6
G. Waller and K. Yamasaki (ed.), Saponins used in food and agriculture (Advanced in Experimental Medicine and Biology, Vol. 405), American Chemical Society, Plenum, (1996).[Image]

5
G. Waller and K. Yamasaki (ed.), Saponins used in traditional and modern medicine (Advanced in Experimental Medicine and Biology, Vol. 404), American Chemical Society, Plenum, (1996).[Image]

4
S. Yamamura, L.R. Simpol, K. Ozawa, K. Ohtani, H. Otsuka, R. Kasai, K. Yamasaki and W. G. Padolina, Antiallergic Dimeric Prenylbenzoquinones from Ehretia microphylla, Phytochemistry, 39, 105-110 (1995). [Abstract]

3
R. Simpol, H. Otsuka, K. Ohtani, R. Kasai and K. Yamasaki, Nitrile Glycosides and Rosmarinic Acid, The Histamine Inhibitor from Ehretia philippinensis, Phytochemisty, 36, 91-95 (1994).

2
N.M.Duc, R. Kasai, K. Ohtani, A. Ito, N.T. Nham, K. Yamasaki, O. Tanaka, Saponins from Vietnamese Ginseng, Panax vietnamensis Ha et Grushv. Collected in Central Vietnam. II, Chem. Pharm. Bull., 42, 115-122, (1994). [Abstract]

1
C. Murakami, K. Myoga, R. Kasai, K. Ohtani, T. Kurokawa, S.Ishibashi, F. Dayrit, W. G. Padolina and K. Yamasaki, Screening of Plant Constituents for the Effect on Glucose Transporter Activity in Ehrlich Ascites Tumor Cells, Chem. Pharm. Bull., 41, 2129-2131, (1993). [Abstract]