Cyclisation of aminyl radicals derived from amino acids

被引:33
作者
Bowman, WR [1 ]
Broadhurst, MJ [1 ]
Coghlan, DR [1 ]
Lewis, KA [1 ]
机构
[1] ROCHE PROD LTD,DISCOVERY,WELWYN GARDEN CIT AL7 3AY,HERTS,ENGLAND
基金
英国工程与自然科学研究理事会;
关键词
D O I
10.1016/S0040-4039(97)01413-5
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
alpha-Amino acid aminyl radicals have been generated from sulfenamide precursors using Bu3SnH. The aminyl radicals undergo 5-exo-trig cyclisation reactions onto suitably placed N-alkenyl or alpha-alkenyl chains on the amino acids with reasonable diastereoselectivity. The alpha-ester of the amino acid imparts electrophilic behaviour to the aminyl radicals and facilitates cyclisation onto alkenes. (C) 1997 Elsevier Science Ltd.
引用
收藏
页码:6301 / 6304
页数:4
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