Synthetic studies on clerodane diterpenoids. The total synthesis of (+/-)-2-oxo-5 alpha,8 alpha-13,14,15,16-tetranorclerod-3-en-12-oic acid

被引:18
作者
Liu, HJ [1 ]
Shia, KS [1 ]
Han, YX [1 ]
Sun, DQ [1 ]
Wang, Y [1 ]
机构
[1] NATL TAIWAN UNIV,DEPT CHEM,TAIPEI 10764,TAIWAN
来源
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE | 1997年 / 75卷 / 06期
关键词
cis-clerodanes; general synthetic approach; total synthesis; face-selective Diels-Alder reaction;
D O I
10.1139/v97-079
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A general synthetic approach to diterpenoids of the cis-clerodane family has been developed, leading to the first total synthesis, in racemic form, of 2-oxo-5 alpha,8 alpha-13,14,15,16-tetranorclerod-3-en-12-oic acid (2). The key operation involved is the face-selective Diels-Alder reaction of dienone ester 10 with trans-piperylene, giving rise to adduct 11 containing the decalin nucleus and correct stereogenic centers common to many cis-clerodane diterpenoids.
引用
收藏
页码:646 / 655
页数:10
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