N-[(3RS)-1-(azacyclooctan-1-yl)carbonylmethyl-2,3-dihydro-5-hydroxymethyl-9-methyl-2-oxo-1H-1,4-benzodiazepin-3-yl]-N'-(3-methylphenyl)urea 在
manganese dioxide
异丙醚 作用下,
以
丙酮 为溶剂,
反应 5.0h,
以to give N-[(3RS)-1-(azacyclooctan-1-yl)carbonylmethyl-2,3-dihydro-5-formyl-9-methyl-2-oxo-1H-1,4-benzodiazepin-3-yl]-N′-(3-methylphenyl)urea as crystalline powder (1.20 g, 80.2% yield)的产率得到N-[(3RS)-1-(azacyclooctan-1-yl)carbonylmethyl-2,3-dihydro-5-formyl-9-methyl-2-oxo-1H-1,4-benzodiazepin-3-yl]-N'-(3-methylphenyl)urea