2-cyano-3-methoxy-7-<(benzoyloxy)methyl>-8,9-bis-(benzyloxy)-1,4-diaza-6-oxaspiro<4.4>nona-1,3-diene 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以88 mg的产率得到2,3-dimethoxy-7-<(benzoyloxy)methyl>-8,9-bis(benzoyloxy)-1,4-diaza-6-oxaspiro<4.4>nona-1,3-diene