12-(Dimethoxymethyl)-4,30-dimethyl-27-(tritylsulfanylmethyl)-3,7,14,18,22,29-hexaoxa-11,26,31,32,33,34,35,36-octazaheptacyclo[26.2.1.12,5.16,9.113,16.117,20.121,24]hexatriaconta-1(30),2(36),4,6(35),8,13(34),15,17(33),19,21(32),23,28(31)-dodecaene-10,25-dione 在
甲酸 作用下,
反应 26.0h,
以88.3%的产率得到