中国科技论文在线

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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

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 constituents from Saussurea medusa

段宏泉， Hongquan Duan a， Yoshihisa Takaishi a， *， Hiroshi Momota b， Yasukazu Ohmoto b， Takao Taki b

Phytochemistry 59(2002)85～90，-0001，（）：

-1年11月30日

摘要

The methanol extract of Saussurea medusa Maxim afforded two lignans: 2a-guaicyl-4-oxo-6a-catechyl-3,7-dioxabicyclo [3.3.0]octane and 1a-hydroxy-2a,4a-guaicyl-3,7-dioxabicyclo[3.3.0]octane; two chlorophyll derivatives: 13-epi-phaeophorbide-a and 13-epi-phaeophorbide-a methyl ester; one megastigmane derivative: 3b-hydroxy-5a,6a-epoxy-7-megastigmen-9-one, along with 19 known compounds. Their structures were established on the basis of spectroscopic studies.

Saussurea medusa， Compositae， Lignan， Phaeophorbide， Immunosuppressive activity

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2005年07月13日

【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

摘要

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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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】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

摘要

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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