2-(3-phenyl-1,2,4-oxadiazol-5-yl)propan-2-yl isocyanate 、
盐酸纳曲酮 在
2-(3-phenyl-1,2,4-oxadiazol-5-yl)propan-2-yl isocyanate 作用下,
以89% for 2 steps的产率得到(4R,4aS,7aR,12bS)-3-(Cyclopropylmethyl)-7-oxo-4a-(((2-(3-phenyl-1,2,4-oxadiazol-5-yl)propan-2-yl)carbamoyl)oxy)-2,3,4,4a,5,6,7,7a-octahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-9-yl acetate