3-[2-(cis-6-Methoxy-2,3,3a,4,5,9b-hexahydro-[1H]-benz[e]isoindol-1-yl)ethyl]-7-carbomethoxy-quinazoline-2,4(1H,3H)-dione hydrochloride                                                                                                                                                              在
                                                                                                                                                                                 LiOH                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                                                        以83%的产率得到3-[2-((3aR,9bR)cis-6-Methoxy-2,3,3a,4,5,9b-hexahydro-[1H]-benz[e]isoindol-1-yl)ethyl]-7-carboxyquinazoline-2,4(1H,3H)-dione hydrochloride