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2005年07月13日

【期刊论文】Sesquiterpene Alkaloids from Tripterygium hypoglaucum and Tripterygium wilfordii: A New Class of Potent Anti-HIV Agents

段宏泉， Hongquan Duan， † Yoshihisa Takaishi， *， † Yasuhiro Imakura， ‡ Yongfong Jia， § Duan Li， § L. Mark Cosentino， ⊥and Kuo-Hsiung Lee‖|

J. Nat. Prod. 2000, 63, 357～361，-0001，（）：

-1年11月30日

摘要

Five new sesquiterpene pyridine alkaloids [triptonines A (1) and B (2), and wilfordinines A (3), B (4), and C (5)] and two known compounds (peritassine A and hypoglaunine C) were isolated from Tripterygium hypoglaucum and a clinically used extract of Tripterygium wilfordii. The structures of 1-5 were elucidated by spectroscopic methods. The anti-HIV activity of 1, 2, and several related compounds was evaluated. Triptonine B (2) demonstrated potent anti-HIV activity with an EC50 value of <0.10

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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】Sesquiterpene Alkaloids from Extracts of Tripterygium wilfordii

段宏泉， Hongquan DUAN， a， Yoshihisa TAKAISHI， *， Yongfong JIA， b， and Duan Li b

Chem. Pharm. Bull. 47(11)1664～1667 (1999)，-0001，（）：

-1年11月30日

摘要

Five new sesquiterpene pyridine alkaloids, named wilfordinines D (I), E (2), F(3), G (4) and H (5), along with six known compounds have been isolated from the extracts (T‖) of Tripterygium wilfordii Hook F. Their struetures were elucidated by spedctroseopy.

Tripterygium wilfordii， Celastraceae， sesquiterpene， wilfordinine

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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】Novel Sesquiterpene Esters with Alkaloid and Monoterpene and Related Compounds from Tripterygium Hypoglaucum：A New Class of Potent Anti-HIV Agents

段宏泉， Hongquan Duan a， Yoshihisa Takaishti a* Masahiko Bando b Masaru Kido b， Yasuo Imakura c and KuoHsiung Lee d

Tetrahedron Letters 40(1999)2969～2972，-0001，（）：

-1年11月30日

摘要

Two new sesquiterpene polyol esters (triptonine A and B) with alkaloid and monoterpene were isolated from Tripterygium hypoglaucum (Levi.) Hutch. Their structures were elucidated by spectroscopic means and X-ray analysis. Triptonine A (1) and hypoglaunine B3) (4) demonstrated potent anti-HIV activity with EC50 values of 2.54 and 0.13

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