(S)-2-(3-dimethylamino-5-formyl-benzyl)-1,1-dioxo-1λ6-isothiazolidine-3-carboxylic acid methyl ester 、 (S)-2-(3-dimethylamino-5-formyl-benzyl)-1,1-dioxo-1λ6-isothiazolidine-3-carboxylic acid ethyl ester 、 (S)-4,4,N1,N1-tetramethyl-pentane-1,2-diamine hydrochloride 在
magnesium sulfate 、
溶剂黄146 、
三乙胺 作用下,
以
甲醇 、
二氯甲烷 、
乙酸乙酯 为溶剂,
生成
2-{3-dimethylamino-5-[((S)-1-dimethylaminomethyl-3,3-dimethyl-butylamino)-methyl]-benzyl}-1,1-dioxo-1λ6-isothiazolidine-3-carboxylic acid methyl ester 、
2-{3-dimethylamino-5-[((S)-1-dimethylaminomethyl-3,3-dimethyl-butylamino)-methyl]-benzyl}-1,1-dioxo-1λ6-isothiazolidine-3-carboxylic acid ethyl ester