N-{4-[({4-[(2-{[tert-butyl(dimethyl)silyl]oxy}ethyl)(cyano)amino]phenyl}-amino)carbonyl]-1-methyl-1H-pyrazol-3-yl}-5-chloropyridine-2-carboxamide 、
甲烷磺酸 在
silica gel 作用下,
以The title compound is isolated by flash chromatography on silica gel (mobile phase: dichloromethane/methanol 9:1→4:1)的产率得到5-chloro-N-[4-({[4-(2-imino-1,3-oxazolidin-3-yl)phenyl]amino}carbonyl)-1-methyl-1H-pyrazol-3-yl]pyridine-2-carboxamide methanesulfonate