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2005年07月13日

【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

摘要

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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2005年07月13日

【期刊论文】Coumarins and bicoumarin from Ferula sumbul: anti-HIV activity and inhibition of cytokine release

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

摘要

The methanol extract of the dried roots of Ferula sumbul a

Ferula sumbul， Umbelliferae， Coumarin， Bicoumarin， Fesumtuorin

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2005年07月13日

【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

摘要

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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2005年07月13日

【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

摘要

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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2005年07月13日

【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

摘要

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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