(4'aS,11'aS,11'bR)-7'-(methoxymethoxy)-3'-methylspiro[1,3-dioxolane-2,4'-5,11,11a,11b-tetrahydro-4aH-benzo[a]fluorene]-1'-one 在
sodium methylate 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
生成 (4'aS,11'aS,11'bS)-7'-(methoxymethoxy)-3'-methylspiro[1,3-dioxolane-2,4'-5,11,11a,11b-tetrahydro-4aH-benzo[a]fluorene]-1'-one