在
18-冠醚-6 、
potassium carbonate 作用下,
以
甲苯 为溶剂,
反应 12.0h,
以31%的产率得到(10E,16R,20R,21S,22R,24E)-20-[(2R,3S,7R,8R,9R)-8-[tert-butyl(dimethyl)silyl]oxy-11-[tert-butyl(diphenyl)silyl]oxy-2-methoxy-3,7,9-trimethyl-6-oxoundecyl]-16-[tert-butyl(diphenyl)silyl]oxy-22-methoxy-21-methyl-3,7,19,27-tetraoxa-29,30,31-triazatetracyclo[24.2.1.12,5.16,9]hentriaconta-1(28),2(31),4,6(30),8,10,24,26(29)-octaene-12,18-dione