(R)-2-(4'-hydroxymethyl-biphenyl-4-sulfonylamino)-3-methyl-butyric acid methyl ester 、
2-氯-5-三氟甲基吡啶 在
sodium hydride 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 2.0h,
以54%的产率得到(R)-3-methyl-2-[4'-(5-trifluoromethyl-pyridin-2-yloxymethyl)-biphenyl-4-sulfonylamino]-butyric acid methyl ester