Ethyl 8-bromo-1-(2,5-dimethoxybenzyl)-4-(4-methoxyphenyl)-1,2-dihydro-2-oxobenzofuro[3,2-b]pyridine-3-carboxylate 、
苯硼酸 以to give ethyl 8-phenyl-1-(2,5-dimethoxybenzyl)-4-(4-methoxyphenyl)-1,2-dihydro-2-oxobenzofuro[3,2-b]pyridine-3-carboxylate, m.p. 216°的产率得到ethyl 8-phenyl-1-(2,5-dimethoxybenzyl)-4-(4-methoxyphenyl)-1,2-dihydro-2-oxobenzofuro[3,2-b]pyridine-3-carboxylate