1,3-二甲基巴比妥酸 、
2-[(9S)-4-methoxy-9-methyl-6,9-dihydro[1,3]dioxolo[4,5-h]isoquinolin-8(7H)-yl]benzaldehyde 以
正丁醇 为溶剂,
反应 22.0h,
以69%的产率得到(12bS)-8-methoxy-1',3',12b-trimethyl-7,12b-dihydro-2'H,6H,14H-spiro[1,3-dioxolo[6,7]isoquino[2,1-a]quinoline-13,5'-pyrimidine]-2',4',6'-(1'H,3'H)-trione