Benzoic acid (1S,2S,3R,5R,6S,9R)-5-(tert-butyl-dimethyl-silanyloxy)-8-(diphenyl-phosphinoyloxy)-6-methoxy-4-oxo-10,12-dioxa-tricyclo[7.2.1.02,7]dodec-7-en-3-yl ester 、
三甲基乙炔基硅 在
正丁基锂 、
三氟化硼乙醚 作用下,
生成 [(1S,2S,3R,4R,5R,6S,9R)-5-[tert-butyl(dimethyl)silyl]oxy-8-diphenylphosphoryloxy-4-hydroxy-6-methoxy-4-(2-trimethylsilylethynyl)-10,12-dioxatricyclo[7.2.1.02,7]dodec-7-en-3-yl] benzoate