L. Colombo et al., CONFORMATIONALLY CONSTRAINED DIPEPTIDES - SYNTHESIS OF BICYCLIC LACTAMS BY STEREOSELECTIVE RADICAL CYCLIZATIONS, Gazzetta chimica italiana, 126(8), 1996, pp. 543-554
Regio- and stereoselective radical cyclizations of beta-substituted al
pha-N-acetyl acrylamides have been performed. 6,5- and 7,5-fused bicyc
lic lactams were obtained, which can be viewed as conformationally res
tricted dipeptide mimetics.