(S)-2-{[(3S,8S)-3-(4-Cyclohexylmethoxy-phenyl)-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl]-amino}-3-[4-(2,3-dimethyl-pyridin-4-yl)-phenyl]-propionic acid methyl ester dihydrochloride 、
间甲基苯甲酰氯 在
Sodium sulfate-III 、 silica 作用下,
以
乙酸乙酯 、
碳酸氢钠 为溶剂,
反应 1.0h,
以to give the title compound (15 mg)的产率得到(S)-2-{[(3S,8S)-3-(4-cyclohexylmethoxy-phenyl)-7-(3-methyl-benzoyl)-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl]-amino}-3-[4-(2,3-dimethyl-pyridin-4-yl)-phenyl]-propionic acid