Chelation controlled reduction of N-protected β-amino ketones toward the synthesis of HPA-12 and analogues
摘要:
Diastereoselective reduction of N-protected beta-amino ketones does not proceed effectively under the conditions used for chelation controlled reductions of N-alkyl beta-amino ketones. A thorough analysis of various conditions required for the stereoselective reduction of gamma-aryl-gamma-oxo-beta-amino alcohols is reported. The products of the syn-selective reduction are used for the preparation of a ceramide trafficking inhibitor HPA-12 and analogues. (C) 2015 Elsevier Ltd. All rights reserved.