(3S,8S)-3-(4-phenoxy-phenyl)-7-((S)-1-phenyl-propyl)-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carboxylic acid 、 L-Phenylalanine, 4-(2,3-dimethyl-4-pyridinyl)-, methyl ester, hydrochloride (1:2) 、
1-羟基苯并三唑 、
N-甲基吗啉 在
silica 作用下,
以
二氯甲烷 、
1,2-二氯乙烷 为溶剂,
反应 6.0h,
以to give the title compound (9 mg)的产率得到(S)-3-[4-(2,3-dimethyl-pyridin-4-yl)-phenyl]-2-{[(3S,8S)-3-(4-phenoxy-phenyl)-7-((S)-1-phenyl-propyl)-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl]-amino}-propionic acid