[5-(3-cyano-benzyloxy)-6-hydroxymethyl-4-methyl-pyridin-3-ylmethyl]-(4-cyano-phenyl)-carbamic acid tert-butyl ester 在
manganese dioxide manganese dioxide 、
乙酸乙酯 、 crude residue 、 silica gel 、
ethyl acetate n-hexane 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以to give [5-(3-cyano-benzyloxy)-6-formyl-4-methyl-pyridin-3-ylmethyl]-(4-cyano-phenyl)-carbamic acid tert-butyl ester (141) (154 mg, 66% yield) as a colorless solid的产率得到[5-(3-cyano-benzyloxy)-6-formyl-4-methyl-pyridin-3-ylmethyl]-(4-cyano-phenyl)-carbamic acid tert-butyl ester