CONTROLLING BENZYLIC FUNCTIONALITY AND STEREOCHEMISTRY .2. SYNTHESIS OF THE PSEUDOPTEROSIN AGLYCONE

被引:35
作者
MCCOMBIE, SW
COX, B
GANGULY, AK
机构
[1] Chemical Research, Schering-Plough Corporation, Bloomfield, NJ 07003
关键词
D O I
10.1016/S0040-4039(00)71243-3
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Homologation, cyclisation, and reduction converted the tetralin (2) to the hexahydrophenalenol (8), which was methylated to afford (19) via alkoxide-directed metalation. The degree of stereoselectivity resulting from reactions of (19) and congeners with allylsilane - Lewis acid combinations was markedly dependent upon substitution patterns, whereas Et2AlCN-SnCl4 produced pseudoaxial nitriles. The trimethyl nitrile (24) was elaborated to the pseudopterosin aglycone (4).
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页码:2087 / 2090
页数:4
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