rac-(2S,3S)-6-hydroxy-2-(3,4-dimethoxyphenyl)-3-methyl-5-propyl-2,3-dihydrobenzofuran 、
(2S,3S,3AS)-2-(3,4-dimethoxyphenyl)-3a-methoxy-3-methyl-5-n-propyl-2,3,3a,6-tetrahydro-6-oxo-benzofuran 、
(2S,3S,3aR)-2-(3,4-dimethoxyphenyl)-3a-methoxy-3-methyl-5-n-propyl-2,3,3a,6-tetrahydro-6-oxo-benzofuran 、 lead(IV) tetraacetate 以
甲醇 为溶剂,
生成 (2S,3S,3aS)-3a-Acetoxy-2-(3,4-dimethoxyphenyl)-3-methyl-5-n-propyl-2,3,3a,6-tetrahydro-6-oxo-benzofuran 、 (2S,3S,3aR)-3a-Acetoxy-2-(3,4-dimethoxyphenyl)-3-methyl-5-n-propyl-2,3,3a,6-tetrahydro-6-oxo-benzofuran