C. Flamant-robin et al., A novel approach for the asymmetric synthesis of (3S,4R)-3-amino-4-alkyl-2-piperidinones: conformationally constrained dipeptides, TETRAHEDR L, 42(48), 2001, pp. 8483-8484
A straightforward method is developed for the synthesis of enantiopure (3S,
4R)-3-amino-4-alkyl-2-piperidinone derivatives, six-membered lactam-bridged
dipeptides, via highly diastereofacial selective 1,4-addition of organocup
rate to the chiral oxazolidine alpha,beta -unsaturated ester 1 as the key s
tep. (C) 2001 Elsevier Science Ltd. All rights reserved.