中国科技论文在线

上传时间

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

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

61浏览
0点赞
0收藏
0分享
106下载
0

引用

上传时间

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

28浏览
0点赞
0收藏
0分享
72下载
0

引用

上传时间

2005年07月13日

【期刊论文】Immunosuppressive Diterpenoids from Tripterygium wilfordii

段宏泉， Hongquan Duan， † Yoshihisa Takaishi， *， † Hiroshi Momota， ‡ Yasukazu Ohmoto， ‡ Takao， Taki， ‡ Yongfeng Jia， § and Duan Li§

J. Nat. Prod. 1999, 62, 1522～1525，-0001，（）：

-1年11月30日

摘要

A clinically used extract of Tripterygium wilfordii afforded three new diterpenoidss3

42浏览
0点赞
0收藏
0分享
76下载
0

引用

上传时间

2005年07月13日

【期刊论文】Limonoids from Citrus sudachi

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

摘要

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

66浏览
0点赞
0收藏
0分享
189下载
0

引用

上传时间

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

84浏览
0点赞
0收藏
0分享
45下载
0

引用