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【期刊论文】Polysulfide Derivatives from Ferula foetida
段宏泉, Hongquan Duan, †, Yoshihisa Takaishi, *, ‡, Motoo Tori, §, Shigeru Takaoka, Gisho Honda, ⊥, Michiho Ito, Yoshio Takeda, ‖, Olimjon K. Kodzhimatov, ▽, K. Kodzhimatov, and Ozodbek Ashurmetov▽
J. Nat. Prod. 2002, 65, 1667~1669,-0001,():
-1年11月30日
The ethyl acetate-soluble fraction from a methanol extract of Ferula foetida has afforded six new sulfide derivatives, (E)-3-methylsulfinyl-2-propenyl sec-butyl disulfide (foetisulfide A) (1), (Z)-3-methylsulfinyloxy-2-propenyl sec-butyl disulfide (foetisulfide B) (2), (E)-3-methylsulfinyloxy-2-propenyl sec-butyl disulfide (foetisulfide C) (3), bis(3-methylthio-2E-propenyl) disulfide (foetisulfide D) (4), 3,4,5-trimethyl-2-thiophenecarboxylic acid (foetithiophene A) (5), 3,4,5-trimethyl-2-(methylsulfinyloxymethyl)thiophene (foetithiophene B) (6), along with six known compounds. The structures of 1-6 were established on the basis of spectroscopic studies, with the elucidation of 5 confirmed by single-crystal X-ray crystallography.
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段宏泉, Ping Zhou a, Yoshihisa Takaishi a, *, Hongquan Duan a, Bei Chen a, Gisho Honda b, Michiho Itoh b, Yoshio Takeda c, Olimjon K. Kodzhimatovd, Kuo-Hsing Leee
Phytochemistry 53(2000)689~697,-0001,():
-1年11月30日
The methanol extract of the dried roots of Ferula sumbul a
Ferula sumbul, Umbelliferae, Coumarin, Bicoumarin, Fesumtuorin
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【期刊论文】Immunosuppressive Diterpenes from Veronicastrum sibiricum
段宏泉, Wenyuan GAO a, RongZHANG a, Wei JIA b, Jun ZHANG c, Yoshihisa TAKAISHI d, and Hongquan DUAN*, a
Chem. Pharm. Bull. 52(1)136~137 (2004),-0001,():
-1年11月30日
Two new diterpenes, named sibiriquinone A (1) and B (2), along with four known diterpenes have been isolated from the aerial part of Veronicastrum sibiricum. Their structures were elucidated by spectroseopy. The isolated compounds showed significant immunosuppressive activities.
Veroniedstrum sibiricum, diterpene, immunosuppressive activity
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【期刊论文】Immunosuppressive Sesquiterpenes from Tripterygium wilfordii
段宏泉, Xiaodong WANG a, Wenyuan GAO a, ZhiYAO b, Shaoyu Zhang c, Yanwen ZHANG, c, Yoshihisa TAKAISHI, d, and Hongquan DUAN*e
Chem. Pharm. Bull. 53(6)607~610 (2005),-0001,():
-1年11月30日
Five new sesquiterpenes, 1β-furanoyl-2β, 3a, 7a, 8β, 11-pentaacetoxy-4a, a-dihydroxy-dihydroagarofuran (1), 1β, 2β, 3a, 5a, 7β, 8β, 11-heptaacctoxy-dihydroagarofuran (2), 1β-furanoyl-2β,3a, 7a, 8β, 11-pentaacetoxy-5a-hydroxy-dihydroagarofuran (3), 1β, 7β, 8a-triacctoxy-2fl-furanoyl-4a-hydroxy-11-isobutyryloxy-dihydroagarofu-ran (4), and 1β-nicotinoyl-2β, 5a, 7β-triacetoxy-4a-hydroxy-11-isobutyryloxy-8a-furanoyl-dihydroagarofuran (5), were isolated from the xylem of Tripterygium wilfordii, together with a known compound (6). Their structures were elucidated on the basis of spectroscopic studies. Compounds 2-5 showed significant immunosuppressive activities.
Tripterygium wilfordii, xylem, sesquiterpene, 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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