2-(((3aR,5R,5aS,8aS,8bR)-2,2,7,7-tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran-5-yl)methoxy)acetic acid 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以90%的产率得到(3aR,5R,5aS,8aS,8bR)-5-((methoxymethoxy)methyl)-2,2,7,7-tetramethyltetrahydro-3aH-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran