(R)-tert-butyl-4-{5-[(ethoxycarbonyl)amino]-2-fluorophenyl}-4-methyl-1,2,3-oxathiazolidine-3-carboxylate 2,2-dioxide 、
4-bromo-1H-imidazole-2-carbonitrile 生成 (R)-ethyl {3-[1-[(tert-butoxycarbonyl)amino]-2-(4-bromo-2-cyano-1H-imidazol-1-yl)-1-methylethyl]-4-fluorophenyl}carbamate