反应详情

The title compound, ISP-MS: m/e=399.4 (M+H+) and α D 20 = - 54.7 , was prepared in accordance with the general method of example 12b) from 4-chloro-7-fluoro-1H-indole-2-carboxylic acid ethyl ester and (S)-5-methyl-2,2-dioxo-[1,2,3]oxathiazolidine-3-carboxylic acid tert-butyl ester. e) (R)-9-Chloro-6-fluoro-4-methyl-3,4-dihydro-2H-pyrazino[1,2-a]indol-1-one