A [3+3] cyclization strategy for asymmetric synthesis of alkyl substituted piperidine-2-ones using 1,2-cyclic sulfamidates: a formal synthesis of (S)-coniine from L-norvaline

被引:14
作者
Karanfil, Abdullah [1 ]
Balta, Berrin [1 ]
Eskici, Mustafa [1 ]
机构
[1] Celal Bayar Univ, Fac Arts & Sci, Dept Chem, TR-45016 Mansa, Turkey
关键词
Cyclic sulfamidates; Lithium triethylorthopropiolate; Cyclization; Piperidines; GLYCOSYL AMINO-ACIDS; ENANTIOSELECTIVE SYNTHESIS; STEREOSELECTIVE-SYNTHESIS; EFFICIENT SYNTHESIS; LACTAM PRECURSORS; CYCLIC SULFAMATE; FACILE ENTRY; ALPHA; REACTIVITY; DERIVATIVES;
D O I
10.1016/j.tet.2012.09.081
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Regioselective ring-opening reactions of a set of representative 1,2-cyclic sulfamidates with lithium triethylorthopropiolate proceeded efficiently to deliver the corresponding delta-amino-alpha,beta-unsaturated esters after acidic hydrolysis. Hydrogenation of the unsaturated esters and subsequent thermal cyclization afforded the related alkyl substituted piperidine-2-ones. This approach represents a novel [3+3] cyclization strategy for the asymmetric synthesis of alkyl substituted piperidin-2-ones. Efficiency of the cyclization process is illustrated by a formal asymmetric synthesis of (S)-coniine from L-norvaline. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:10218 / 10229
页数:12
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