diethyl (4S,2'R)-6-methyl-2-(2'-thiazolidinyl)-4-(thien-2''-yl)-1,4-dihydropyridine-3,5-dicarboxylate 在
potassium tert-butylate 作用下,
以
乙醇 为溶剂,
反应 3.0h,
以70%的产率得到ethyl (6S,9bR)-8-methyl-5-oxo-6-(thien-2''-yl)-2,3,5,6,9,9b-hexahydrothiazolo[3',2':1,2]pyrrolo[3,4-b]pyridine-7-carboxylate