(3s,8s)-8-{(s)-1-Carboxy-2-[4-(2,3-dimethyl-pyridin-4-yl)-phenyl]-ethyl-carbamoyl}-3-(4-hydroxy-phenyl)-2,3,8,9-tetrahydro-6h-[1,4]dioxino[2,3-g]isoquinoline-7-carboxylic acid tert-butyl ester 、
4-(三氟甲基)环己甲醇 、 (s)-2-({(3s,8s)-7-(2,5-Dimethyl-oxazole-4-carbonyl)-3-[4-(4-trifluoromethyl-cyclohexyl-methoxy)-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 、 、
1,2-二氯乙烷 、
2,5-二甲基-1,3-恶唑-4-甲酸 在
silica 作用下,
以
二氯甲烷 为溶剂,
反应 16.67h,
生成
(S)-2-({(3S,8S)-7-(2,5-dimethyl-oxazole-4-carbonyl)-3-[4-(4-trifluoromethyl-cyclohexyl-methoxy)-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