1-(1H,9H-2-cyano-7-methyl-9-oxo-1-phenylpyrano[2,3-h][1]benzopyran-3-yl)-3-N-(p-chlorophenyl)thiourea 在
sodium tetrahydroborate 作用下,
以
乙醇 为溶剂,
反应 48.0h,
以81%的产率得到12H-1-[N-(p-chlorophenyl)amino]-8-methyl-12-phenyl-3,4,10-trihydropyrano[2',3':5,6]benzopyrano[2,3-b][1,3]pyrimidine-3-thion-10-one