(+/-)-2R*,11bS*-N-(2-Cyano-9,10-dimethoxy-1,3,4,6,7,11b-hexahydrobenzoquinolizin-2-yl)-N'-cyclohexylurea 在
盐酸 作用下,
以
乙醇 为溶剂,
反应 9.0h,
以85%的产率得到(+/-)-2R
*,11bS
*-3'-Cyclohexyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydrospiro
quinolizin-2,5'-imidazolidine>-2',4'-dione hydrochloride