tetraethyl 5,14,20,29,32,33,36,37-octamethyl-7,12,22,27-tetraoxapentacyclo[26.2.2.2
3,6.2
13,16.2
18,21]octatriaconta-3,5,13,15,18,20,28,30,31,33,35,37-dodecaene-2,2,17,17-tetraacetate 在
sodium hydroxide 作用下,
以
四氢呋喃 、
水 为溶剂,
以79%的产率得到5,14,20,21,29,32,33,37-octamethyl-7,12,22,27-tetraoxapentacyclo[26.2.2.2
3,6.2
13,16.2
18,21]octatriaconta-3,5,13,15,18,20,28,30,31,33,35,37-dodecaene-2,2,17,17-tetraacetic acid