Diastereo- and enantioselective synthesis of allylsilane. A useful C-ring fragment of taxol.

被引:11
|
作者
Kusama, H [1 ]
Mori, T [1 ]
Mitani, I [1 ]
Kashima, H [1 ]
Kuwajima, I [1 ]
机构
[1] TOKYO INST TECHNOL,DEPT CHEM,TOKYO 152,JAPAN
关键词
D O I
10.1016/S0040-4039(97)00843-5
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Enantioselective synthesis of a taxol C-ring fragment containing an allylsilane moiety is described. Diastereoselective \4 + 2\ cycloaddition of the pyrone with (R)-t-butylbenzyl vinyl ether followed by appropriate transformations gave a mixture of two regioisomeric cyclohexenyl sulfides, which was convened to the title compound with almost complete diastereo- and enantioselectivities by treating with Li and 4,4'-di-t-butylbiphenyl followed by quenching with chlorotrimethylsilane. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:4129 / 4132
页数:4
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