9-chloro-5-ethyl-5-hydroxy-10-methyl-12-[(4-methyl-1-piperidinyl)methyl]-1,4,5,13-tetrahydro-3H,15H-oxepino[3',4':6,7]indolizino[1,2-b]quinoline-3,15-dione 在
盐酸 作用下,
以
乙醇 、
水 为溶剂,
以85%的产率得到(5R)-1-[9-chloro-5-ethyl-5-hydroxy-10-methyl-3,15-dioxo-4,5,13,15-tetrahydro-1H,3H-oxepino[3',4:6,7]indolizino[1,2-b]quinolin-12-yl-methyl]-4-methyl-hexahydropyridium chloride