Photochemistry of hecogenine acetate revisited

被引:11
|
作者
Jautelat, R
Winterfeldt, E
MullerFahrnow, A
机构
[1] UNIV HANNOVER,INST ORGAN CHEM,D-30167 HANNOVER,GERMANY
[2] SCHERING AG,D-1000 BERLIN,GERMANY
来源
JOURNAL FUR PRAKTISCHE CHEMIE-CHEMIKER-ZEITUNG | 1996年 / 338卷 / 08期
关键词
D O I
10.1002/prac.199633801137
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
We were successful in optimizing the synthesis of the homoallylic alcohol 6 from hecogenine acetate 2 as an important precursor for our approach to cephalostatin analogues by doubling the yields. On this way we discovered that formation of homoallylic alcohol 6 proceeds via a diastereoselective intramolecular Lewis acid catalysed ene reaction directly from lumihecogenine acetate 3. Finally we were able to elucidate the structure of the already described but not clearly identified oxa-dimer 7.
引用
收藏
页码:695 / 701
页数:7
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