Conformationally restricted analogues of methionine: Synthesis of chiral 3-Amino-5-methylthio-2-piperidones
摘要:
(alpha R, 3RS, 5S)-3-amino-N-(2-hydroxy-1-phenylethyl)-5-methylthio-2-piperidones 1 have been synthesized from enamide 2 by subsequent free radical addition of methanothiol on position 5 and amination of 3-position. Copyright (C) 1996 Elsevier Science Ltd
Asymmetric synthesis. XXXIX.1 Synthesis of 3-substituted piperidin-2-ones from chiral non-racemic lactams
摘要:
A series of 3-substituted piperidines in enantiomerically pure form has been synthesized from lactam 1 via the bromo derivative 2i. t-Butyl acetate and 5-methylpyridine derivatives 2g and 2h were obtained optically pure by direct alkylation of 1 with corresponding halides. Azido, amino or benzyloxy products were obtained by diastereoselective substitution of 2i. Copyright (C) 1996 Elsevier Science Ltd
A series of 3-substituted piperidines in enantiomerically pure form has been synthesized from lactam 1 via the bromo derivative 2i. t-Butyl acetate and 5-methylpyridine derivatives 2g and 2h were obtained optically pure by direct alkylation of 1 with corresponding halides. Azido, amino or benzyloxy products were obtained by diastereoselective substitution of 2i. Copyright (C) 1996 Elsevier Science Ltd
Conformationally restricted analogues of methionine: Synthesis of chiral 3-Amino-5-methylthio-2-piperidones
(alpha R, 3RS, 5S)-3-amino-N-(2-hydroxy-1-phenylethyl)-5-methylthio-2-piperidones 1 have been synthesized from enamide 2 by subsequent free radical addition of methanothiol on position 5 and amination of 3-position. Copyright (C) 1996 Elsevier Science Ltd