(+/-)-2-amino-9,10-dimethoxy-1,6,7,11b-tetrahydro-4H-pyrido[2,1-a]isoquinoline-3-carboxylic acid ethyl ester 、
(R,R)-(-)-O,O'-dibenzoyltartaric acid mono(N,N-dimethylamide) 以
乙醇 为溶剂,
反应 12.08h,
以42.1%的产率得到(S)-2-amino-9,10-dimethoxy-1,6,7,11b-tetrahydro-4H-pyrido[2,1-a]isoquinoline-3-carboxylic acid ethyl ester (2S,3S)-bis-benzyloxy-N,N-dimethyl-succinamic acid salt