名称:
Enantioselective synthesis of (S)-N,N-diethyl-2-formyl-2-(methoxymethoxy)butyramide, a key intermediate for 20(S)-camptothecin analogues, via asymmetric bromolactonization
摘要:
A new enantioselective synthetic method for enantiomerically pure (S)-N,N-diethyl-2-formyl-2(methoxymethoxy)butyramide 5, a versatile key intermediate has been developed employing asymmetric bromolactonization using (S)-proline as the chiral auxiliary. (C) 2000 Elsevier Science Ltd. All rights reserved.
DOI:
10.1016/s0957-4166(00)00376-1