Design and synthesis of bridged γ-lactams as analogues of β-lactam antibiotics
作者:Jozsef Aszodi、David A. Rowlands、Pascale Mauvais、Pascal Collette、Alain Bonnefoy、Maxime Lampilas
DOI:10.1016/j.bmcl.2004.03.004
日期:2004.5
Anti-Bredt bridged bicyclo[3.2.1] gamma-lactams were designed as inhibitors of penicillin binding proteins (PBPs). The compounds were prepared by a carbenoid insertion into a lactam N-H bond. Their weak antibacterial activity could either be explained by a poor chemical stability or by unfavorable steric interactions of the methylene bridge of the gamma-lactam with the targeted enzymes. (C) 2004 Elsevier Ltd. All rights reserved.
A convenient chemoenzymatic synthesis of (R)-(−) and (S)-(+)-homo-β-proline
Both enantiomers of the heterocyclic GABA analogue homo-β-proline (3-pyrrolidineacetic acid) were synthesized by a chemoenzymatic method involving the use of two enantiocomplementary enzymes in the disymmetric hydrolyses of 3-nitromethylglutaric acid diethyl ester.