2-(chloromethyl)-4-methoxy-3,5-dimethylpyridinium hydrochloride 、 2-(4-tolylsulfonyl)ethyl 3-(4-[{2-mercapto-5-methoxybenzimidazolyl}sulfonyl]-3,5-dimethylphenoxy)-2,2-dimethylpropionate 在
potassium carbonate 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 1.5h,
以93%的产率得到2-(4-tolylsulfonyl)ethyl 3-{4-[(5-methoxy-2-{[4-methoxy-3,5-dimethyl(2-pyridyl)]methylthio}benzimidazolyl)sulfonyl]-3,5-dimethylphenoxy}-2,2-dimethylpropionate