(E)-4-[(3aS,4S,7R,7aS)-7-Hydroxy-7-(2-hydroxy-ethyl)-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-4-yl]-3-methyl-but-2-enoic acid methyl ester 在
对甲苯磺酸 作用下,
以
various solvent(s) 为溶剂,
生成 (E)-4-[(3aR,6S,7S,7aS)-3a-(2-Acetoxy-ethyl)-7-hydroxy-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-yl]-3-methyl-but-2-enoic acid methyl ester