反应详情

A mixture of the compound (145 mg) obtained in Example 2, acetonitrile (10 ml), N-methyl-N′-nitro-N-nitrosoguanidine (85 mg), triethylamine (0.08 ml) and acetic acid (0.03 ml) was stirred at room temperature for 16 h. The reaction mixture was concentrated under reduced pressure and the resulting residue was purified by silica gel column chromatography (eluent, n-hexane:ethyl acetate=1:1) to give 106 mg of the titled compound (yield, 54%).

1. concentrationThe reaction mixture was concentrated under reduced pressure
2. customthe resulting residue was purified by silica gel column chromatography (eluent, n-hexane:ethyl acetate=1:1)