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【期刊论文】Triterpenoids from Tripterygium wilfordii
段宏泉, Hongquan Duan a, Yoshihisa Takaishi a, *, Hiroshi Momota b, Yasukazu Ohmoto b, Takao Taki b, Yongfeng Jia c, Duan Li c
Phytochemistry 53(2000)805~810,-0001,():
-1年11月30日
The extract (TII) of Tripterygium wilfordii Hook f. afforded four triterpenoids: wilforic acid D (3b,24-epoxy-2a-hydroxy-24R*-ethoxy-29-friedelanoic acid); (E) 3b,24-epoxy-2-oxo-3a-hydroxy-29-friedelanoic acid; (F) 2b-hydroxy-3-oxo-friedelan-29-oic acid; 29-hydroxy-3-oxo-olean-12-en-28-oic acid and 17 known triterpenoids. Their structures were established on the basis of spectroscopic studies. In a bioactivity analysis, only the known dulcioic acid compound showed a signi
Tripterygium wilfordii, Triterpenoids, Immunosuppressive activity
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【期刊论文】Triterpene caffeoyl esters and diterpenes from Celastrus stephanotifolius
段宏泉, Bei Chen, Hongquan Duan, Yoshihisa Takaishi*
Phytochemistry 51(1999)683~687,-0001,():
-1年11月30日
The methanol extract of the dried stems of Celastrus stehanotifolius afforded two new triterpenes: lup-20(29)en-28-al-3b-yl caffeate (betulinaldehyde-3b-yl-caffeate) and olean-28-al-3b-yl caffeate, two new diterpenes: celaphanol A and celaphanol B, three known triterpenes: lup-20(29)en-28-ol-3b-yl caffeate (betulin-3b-yl-caffeate), lup-20(29)en-28-oic-3b-yl caffeate (betulinic acid-3b-yl-caffeate) and olean-3b-yl-caffeate, and one known diterpene: nimbidiol. Their structures were established on the basis of spectroscopic evidence.
Celastrus stephanotifolius, Celastraceae, Triterpenes, Diterpenes
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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 polyol esters from Tripterygium wilfordii
段宏泉, Hong-Quan Duan a, Yoshihisa Takaishi a, *, Yong-Feng Jia b, Duan Li b
Phytochemistry 56(2001)341~346,-0001,():
-1年11月30日
The extract (TII) of Tripterygium wilfordiiHook f. afforded four sesquiterpene esters: 1β, 2β,5a, 8β,11-pentaacetoxy-4a-hydroxy-3a(2'-methylbutanoyl)-15-nicotinoyl-7-oxo-dihydroagarofuran; 1β,5a,11-triacetoxy-7β-benzoyl-4a-hydroxy-8+-nicotinoyl-dihydroagarofuran;1β,2β,5a,11-tetraacetoxy-8a-benzoyl-4a-hydroxy-7β-nicotinoyl-dihydroagarofuran; 5a-benzoyl-4a-hydroxy-1β,8a -dinicotinoyl-dihydro-agarofuran as well as one other known sesquiterpene ester. Their structures were established on the basis of spectroscopic studies.
Tripterygium wilfordii, Celastraceae, TII, Sesquiterpene esters
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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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