tert-butyl (4R,5S)-5-[(2S,3R,4R,5E,7E,9E)-3-hydroxy-4,7-dimethyl-10-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)deca-5,7,9-trien-2-yl]-2,2,4-trimethyl-1,3-oxazolidine-3-carboxylate 、 (2E,4Z,6E,8Z,11S,13S,14E)-13-[tert-butyl(diphenyl)silyl]oxy-15-iodo-11-methoxy-5,8-dimethylpentadeca-2,4,6,8,14-pentaenoic acid 在
4-二甲氨基吡啶 、
2,4,6-三氯苯甲酰氯 、
三乙胺 作用下,
以
甲苯 为溶剂,
以65%的产率得到tert-butyl (4R,5S)-5-[(2S,3R,4R,5E,7E,9E)-3-[(2E,4Z,6E,8Z,11S,13S,14E)-13-[tert-butyl(diphenyl)silyl]oxy-15-iodo-11-methoxy-5,8-dimethylpentadeca-2,4,6,8,14-pentaenoyl]oxy-4,7-dimethyl-10-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)deca-5,7,9-trien-2-yl]-2,2,4-trimethyl-1,3-oxazolidine-3-carboxylate