Asymmetric Synthesis of cis- and trans-2,5-disubstituted pyrrolidines from 3-oxo pyrrolidine 2-phosphonates:: Synthesis of (+)-preussin and analogs

被引:40
|
作者
Davis, Franklin A. [1 ]
Zhang, Junyi [1 ]
Qiu, Hui [1 ]
Wu, Yongzhong [1 ]
机构
[1] Temple Univ, Dept Chem, Philadelphia, PA 19122 USA
关键词
D O I
10.1021/ol800255r
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Pyrrolidine enones, derived from 3-oxo pyrrolidine 2-phosphonates and a HWE reaction with aldehydes, on Luche reduction give pyrrolidine allylic alcohols. The alcohols on hydrogenation (Pd/H(2)) give cis-2,5-disubstituted pyrroliclines and on treatment with TFA-NaBH(3)CN undergo a hydroxy directed reduction to trans-2,5-disubstituted pyrrolidines.
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页码:1433 / 1436
页数:4
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