6-[2-(4-Bromo-phenyl)-2-oxo-ethoxy]-3,3-dimethyl-8-propyl-3,4-dihydro-1H-pyrano[3,4-c]pyridine-5-carbonitrile 在
sodium ethanolate 作用下,
以
乙醇 为溶剂,
以96.6%的产率得到(1-Amino-8,8-dimethyl-5-propyl-8,9-dihydro-6H-3,7-dioxa-4-aza-cyclopenta[a]naphthalen-2-yl)-(4-bromo-phenyl)-methanone