A concise synthesis of β-lactam–sulfonamide hybrids
作者:Dirk Freitag、Pia Schwab、Peter Metz
DOI:10.1016/j.tetlet.2004.03.055
日期:2004.4
Using ring closing metathesis (RCM) as the key operation, a rapid access to beta-lactams fused to a sultam moiety of variable ring size was developed from low cost, commercially available starting materials. An efficient RCM of 4-vinyl-azetidin-2ones to give I-aza-bicyclo[4.2.0]oct-4-en-8-ones is also reported. (C) 2004 Elsevier Ltd. All rights reserved.