(4R,4aS,7aR,12bS)-3-(cyclopropylmethyl)-7-oxo-1,2,3,4,5,6,7,7a-octahydro-4aH-4,12-methanobenzofuro[3,2-e]isoquinoline-4a,9-diyl dibenzoate 在
水 、
potassium carbonate 作用下,
以
甲醇 为溶剂,
生成
17-cyclopropylmethyl-4,5α-epoxy-3-hydroxy-14β-O-(benzoyloxy)morphinan-6-one