benzyl 3-{2-chloro-5-methyl-3'-[(methylsulfonyl)amino]biphenyl-4-yl}-4-hydroxy-2-oxo-1-oxa-7-azaspiro[4.5] dec-3-ene-7-carboxylate 、
三氟乙酸 反应 12.0h,
以50 mg (0.09 mmol, 83% th.) of product are obtained的产率得到N-[2'-chloro-4'-(4-hydroxy-2-oxo-1-oxa-7-azaspiro[4.5]dec-3-en-3-yl)-5'-methylbiphenyl-3-yl]methanesulfonamide trifluoroacetate