6-(5-bromopentyloxy)-3-(4-methoxyphenyl)-2-methylquinazolin-4(3H)-one 、
(2S)-N-(4-hydroxy-5-methoxy-2-nitrobenzoyl)pyrrolidine-2-carboxaldehyde diethyl thioacetal 在
potassium carbonate 作用下,
以
丙酮 为溶剂,
以85%的产率得到(2S)-N-{4-{5-[3-(4-methoxyphenyl)-2-methyl-4-oxo-3,4-dihydro-6-quinazolin yl]oxypentyloxy}-5-methoxy-2-nitrobenzoyl}pyrrolidine-2-carboxaldehyde diethyl dithioacetal