2,2′-{(1S,2S,3R,5R)-4,4-ethylenedioxy-6,8-dioxabicyclo[3.2.1]octane-2,3-diyl}diacetic acid 在
sodium methylate 、
对甲苯磺酸 作用下,
以
甲苯 为溶剂,
反应 6.0h,
生成 methyl {(1S,2S,6S,8R)-7,7-ethylenedioxy-4-oxo-9,11-dioxatricyclo[6.2.1.02,6]undecan-5-yl}carboxylate 、 methyl {(1S,2R,6R,8R)-7,7-ethylenedioxy-4-oxo-9,11-dioxatricyclo[6.2.1.0
2,6]undecan-3-yl}carboxylate