甲烷磺酸 、 N-(2-{4-[(2-{[tert-butyl(dimethyl)silyl]oxy}ethyl)(cyano)amino]phenyl}-3-oxo-2,3-dihydro-1H-isoindol-4-yl)-5-chlorothiophene-2-carboxamide 以
乙腈 为溶剂,
以59%的产率得到5-Chloro-N-{2-[4-(2-imino-1,3-oxazolidin-3-yl)phenyl]-3-oxo-2,3-dihydro-1H-isoindol-4-yl}-thiophene-2-carboxamide methanesulphonate