摘要:
The synthesis of substituted oxopiperazines, which may act as conformationally constrained peptide mimics, is reported. The synthesis is based on the cyclization of sulfonamide dipeptides with dibromoethane as the 1, 2-dielectrophile. Alternatively, these mimetics were prepared via a Mitsunobu reaction. (C) 1998 Elsevier Science Ltd. All rights reserved.