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2005年07月13日

段宏泉， Hiroyuki NAKAGAWA， Hongquan DUAN， and Yoshihisa TAKAISHI*

Chem. Pharm. Bull. 49(5)649～651 (2001)，-0001，（）：

-1年11月30日

Four new limonoid derivatives, l-O-methylichangensin (I), sudachinoid A (2), B (3), and C (4) were isolated from the seeds of Citrus sudachi, together with the known compounds ichangensin, obacunone, obacunoic acid and limonin, and the structures of the new compounds were elucidated based on spectroscopic and chemical evidence.

Citrus sudachi， Rutaceae， limonoid， sudachinoid

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2005年07月13日

【期刊论文】SESQUITERPENE ALKALOIDS FROM TRIPTER YGIUM HYPOGLA UCUM

段宏泉， HONGQUAN DUAN， KAZUYOSHI KAWAZOE and YOSHIHSA TAKAISHI*

Phytochemistry, Vol. 45, No.3, pp. 617～621, 1997，-0001，（）：

-1年11月30日

摘要

Esters of three new (hyponines A-C) and four known sesquiterpene polyalcohol esters have been isolated from the root bark of Tripterygium hypoglaucum. The structures of the new compounds were elucidated at 7-(acetyloxy)-OS-furanoyl-OS-deacetyl-7-deoxo-evonine, 7-(acetyloxy)-O11-furanoyl-O11-deacetyl-7-deoxo-evonine and 7-(acetyloxy)-O11-benzoyl-O11-deacetyl-7-deoxo-evonine by spectroscopic means. This structural elucidation indicated that the structure of the known compound should be reversed.

Index-Tripterygium hypoglaucum， Celastraceae， root bark， sesquiterpenes， alka-loids， evonine， hyponine.，

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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.，