N-(3,3-dimethyl-6-nitro-2-oxo-1-pentyl-2,3-dihydro-1H-indol-5-yl)-N-methyl-3-phenyl-propionamide 在
silica gel 作用下,
以
methanol-dichloromethane 为溶剂,
以The desired compound (78 mg) is obtained by flash chromatography on silica gel eluting with CH2Cl2/MeOH (98:2)的产率得到