Facile synthesis of N-Boc-(2S,5R)-5-(1′-hydroxy-1′-methylethyl)proline
摘要:
Coupling of chiral 1-O-benzylglycerol-2,3-bistriflate with trilithiated chiral 2-N-Boc-3-phenylsulfonylpropan-1-ol derivative constitutes an efficient route to chiral C-5 substituted prolines which can potentially induce cis Xaa-Pro peptide bond conformation. A straightforward seven-step synthesis of the title compound is described. (C) 2001 Elsevier Science Ltd. All rights reserved.
Facile synthesis of N-Boc-(2S,5R)-5-(1′-hydroxy-1′-methylethyl)proline
摘要:
Coupling of chiral 1-O-benzylglycerol-2,3-bistriflate with trilithiated chiral 2-N-Boc-3-phenylsulfonylpropan-1-ol derivative constitutes an efficient route to chiral C-5 substituted prolines which can potentially induce cis Xaa-Pro peptide bond conformation. A straightforward seven-step synthesis of the title compound is described. (C) 2001 Elsevier Science Ltd. All rights reserved.
作者:Minhee Lee、Taeho Lee、Eun-Young Kim、Hyojin Ko、Deukjoon Kim、Sanghee Kim
DOI:10.1021/ol053010j
日期:2006.2.1
[reaction: see text] A stereocontrolledapproach to the preparation of the Weinreb intermediate 3 has been developed. The important features of this approach are the creation of stereogeniccenters through a cyclic amino acid ester-enolate Claisen rearrangement and the use of ring-closing metathesis for the construction of the azaspirocyclic skeleton.