上游原料
2-Bromoacetic acid tert-butyl ester; tert-butyl 2-bromoacetate; tert-Butyl bromoacetate3,4-Dimethoxybenzaldehyde; Veratraldehyde1-[4-(benzyloxy)-2-hydroxy-6-methoxyphenyl]-1-ethanone(E)-1-[4-(benzyloxy)-2-hydroxy-6-methoxyphenyl]-3-(3,4-dimethoxyphenyl)-2-propen-1-one7-(benzyloxy)-2-(3,4-dimethoxyphenyl)-5-methoxy-4H-chromen-4-one2-(3,4-dimethoxyphenyl)-7-hydroxy-5-methoxy-4H-chromen-4-onetert-butyl 2-[[2-(3,4-dimethoxyphenyl)-5-methoxy-4-oxo-4H-chromen-7-yl]oxy]acetate
