A convenient access to (3S)-3-(triisopropylsilyl)oxy-1-pyrroline N-oxide, a useful intermediate for polyfunctionalized enantiopure indolizidine and pyrrolizidine synthesis

被引：53

作者：

Goti, A ^{[1
]}

Cacciarini, M ^{[1
]}

Cardona, F ^{[1
]}

Brandi, A ^{[1
]}

机构：

[1] Univ Florence, Dipartimento Chim Organ Ugo Schiff, CNR, CSCEA, I-50121 Florence, Italy

来源：

TETRAHEDRON LETTERS | 1999年 / 40卷 / 14期

关键词：

nitrones; indolizidines; pyrrolizidines; asymmetric synthesis;

D O I：

10.1016/S0040-4039(99)00310-X

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Optimization of a strategy providing the enantiomerically pure nitrone 2 in five steps and 28% overall yield from L-malic acid has been achieved by the combined use of DIBAL-H as the reductant and triisopropylsilyl as the protecting group. The utility of nitrone 2 as synthetic intermediate is demonstrated by a ready access to polyhydroxylated indolizidines and pyrrolizidines via stereoselective 1,3-dipolar cycloaddition reactions. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2853 / 2856

页数：4