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【期刊论文】Chemical Constituents from the Colombian Medicinal Plant Niphogeton ternata
段宏泉, Hongquan DUAN, a, Yoshihisa TAKAISHI, *, Yoshinori FUJIMOTO, b, Cristina GARZON, e, Coralia OSORIO, d, and Carmenza DUOUI
Chem. Pharm. Bull. 50(1)115~117 (2002),-0001,():
-1年11月30日
Two eoumarins and one polyaeetylene, 5-O-(3-chloro-2-hydroxy-3-methylbutyl)-8-methoxypsoralen (1), 2', 3' -dihydro-jatamansin (2), and 10-chloro-1-heptadecene-4.6-diyne-3,8,9-triol (3), along with 15 known compounds (4-18), were isolated from the methanol extract of Niphogeton ternata. Their struetures were elucidated by spectroseopy.
Niphogeton termata, Umbelliferae, coumarin, polyacetylene
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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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