(2
R,2'
R)-5,5'-dimethyl-2,2'-[4,5α;4',5'α-diepoxy-3,6,3',6'-tetramethoxy-17,17'-methanediyl-bis-(6α,14α-etheno-morphinan-7α-yl)]-bis-hexan-2-ol 在
盐酸 、
sodium carbonate 作用下,
以
乙醇 为溶剂,
生成
7,8-Dihydro-6'-isobutyl-5'-methylcyclohex-5'-eno<1',2':8,14>-codeinon