25,29,33,37-Tetraheptyl-2,4,8,10,14,16,20,22-octaoxanonacyclo[21.15.1.124,38.05,36.07,34.011,32.013,30.017,28.019,26]tetraconta-1(39),5,7(34),11,13(30),17(28),18,23,26,31,35,38(40)-dodecaene-6,12,18,39-tetrol 、
2,6-双(溴甲基)吡啶 在
N-甲基吡咯烷酮 、
caesium carbonate 作用下,
以8%的产率得到