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【期刊论文】Immunosuppressive Sesquiterpene Alkaloids from Tripterygium wilfordii
段宏泉, Hongquan Duan, † Yoshihisa Takaishi, *, † Hiroshi Momota, ‡ Yasukazu Ohmoto, ‡ Takao Taki, ‡ Yongfeng Jia, § and Duan Li§
J. Nat. Prod. 2001, 64, 582~587,-0001,():
-1年11月30日
Nine new sesquiterpene pyridine alkaloids [wilfornines A (1), B (2), C (3), D (4), E (5), F (8), and G (9); wilfordinines I (6) and J (7)] and six known compounds (10-15) were isolated from a clinically used extract (TII) of Tripterygium wilfordii. The structures of 1-9 were elucidated by spectroscopic and chemical methods. The inhibitory effects on cytokine production of 1-3 and several related compounds were evaluated. Compounds 10 and 14 showed significant inhibitory effects on cytokine production.
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【期刊论文】SESQUITERPENE ALKALOIDS FROM TRIPTER YGIUM HYPOGLA UCUM
段宏泉, HONGQUAN DUAN, KAZUYOSHI KAWAZOE and YOSHIHSA TAKAISHI*
Phytochemistry, Vol. 45, No.3, pp. 617~621, 1997,-0001,():
-1年11月30日
Esters of three new (hyponines A-C) and four known sesquiterpene polyalcohol esters have been isolated from the root bark of Tripterygium hypoglaucum. The structures of the new compounds were elucidated at 7-(acetyloxy)-OS-furanoyl-OS-deacetyl-7-deoxo-evonine, 7-(acetyloxy)-O11-furanoyl-O11-deacetyl-7-deoxo-evonine and 7-(acetyloxy)-O11-benzoyl-O11-deacetyl-7-deoxo-evonine by spectroscopic means. This structural elucidation indicated that the structure of the known compound should be reversed.
Index-Tripterygium hypoglaucum, Celastraceae, root bark, sesquiterpenes, alka-loids, evonine, hyponine.,
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【期刊论文】DI- AND TRITERPENOIDS FROM TRIPTER YGIUM HYPOGLA UCUM
段宏泉, HONGQUAN DUAN, KAZUYOSHI KAWAZOE, MASAHIKO BANDO*, MASARU K]DO* and YOSHIHISA TAKAISHI†
Ph.vtochemistry, Vol. 46, No.3, pp. 535~543, 1997,-0001,():
-1年11月30日
The methanol extract of dried root outer bark of Tripterygium hypoglaucum (Levl.) Hutch afforded five new triterpenes: 2,3-seco-2,24-epoxy-D:A-friedoolenane-2, 24-olide-29-oic acid named celastolide, 2,23-dihydroxy-3-methoxy-6-oxo-l,3,5(10), 8-tetraene-24-nor-D:A-friedoolenane-29-oic acid, 2-hydroxy-3-methoxy-6-oxo-l,3,5(10), 8-tetraene-24-nor-D:A-friedoolenane-29-oic acid, 2,3-dihydroxy-l,3,5(10), 8-tetraene-24-nor-D: A-friedoolenane-29-oic acid and 3fl, 11 e-dihydroxy- 13(18)-ene-oleanane named triptohypol A, B and C and hypodiol, and two new diterpenes: 3/3,14,19-trihydroxy-abieta-8,11,13-triene and 7-oxo-I 1,13-dihydroxy- 19(4-3)-abeo-abieta-3,8,11,13-tetraene-19,18-olide named triptobenzene J and K. and 18 known compounds. Their structures were established on the basis of chemical and spectroscopic studies.
Tripterygium hypoglaucum, Celastraceae, triterpene, diterpene: celastolide, triptohypol, hypodiol.,
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【期刊论文】STRUCTURES OF SESQUITERPENE POLYOL ALKALOIDS FROM TRIPTERYGIUM HYPOGLAUCUM
段宏泉, HONGQUAN DUAN and YOSHIHISA TAKAISHI*
Phytochemistry Vol. 49, No.7, pp. 2185~2189, 1998,-0001,():
-1年11月30日
Esters of four new (hypoglaunine A, B, C and D) and
Tripterygium hypoglaucum, Celastraceae, root bark, sesquiterpene, pyri-dine alkaloid, hypoglaunine.,
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【期刊论文】Sesquiterpene evoninate alkaloids from Tripterygium hypoglaucum
段宏泉, Hongquan Duan, Yoshihisa Takaishi*
Phytochemistry 52(1999)1735~1738,-0001,():
-1年11月30日
Esters of three new (hyponines D
Tripterygium hypoglaucum, Celastraceae, Root bark, Sesquiterpenes, Pyridine alkaloids, Hyponine
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