(S)-3-[(3-ethoxycarbonylmethylisoquinol-5-yl)imino]-1,5,10,10a-tetrahydrothiazolo[3,4-b]-isoquinoline 、
sodium hydroxide 在
二氯甲烷 、
magnesium sulfate 、
dimethylformamide hydrate 、
异丙醚 作用下,
以
盐酸 为溶剂,
5.0~100.0 ℃
、1.73 kPa
条件下,
反应 26.0h,
以to yield (S)-3-[(3-carboxymethylisoquinol-5-yl)imino]-1,5,10,10a-tetrahydrothiazolo[3,4-b]isoquinoline (1.7 g), melting at about 200° C. (with decomposition)的产率得到(S)-3-[(3-carboxymethylisoquinol-5-yl)imino]-1,5,10,10a-tetrahydrothiazolo[3,4-b]isoquinoline