Diastereoselective reduction of dimethyl γ-[(N-p-toluenesulfonyl)amino]-β-ketophosphonates derived from amino acids
摘要:
The reduction of dimethyl gamma-[(N-p-toluenesulfonyl)amino]-beta-ketophosphonates 7a-e with different hydrides gave dimethyl gamma-[(N-p-toluenesulfonyl)amino]-beta-hydroxyphosphonates 9a-e and 10a-e with good chemical yield and moderated d astereoselectivity. The configuration of all new stereogenic centers were assigned by X-ray analysis and chemical correlation. (C) 2004 Elsevier Ltd. All rights reserved.