2''-[(E)-(4R,5S,6R,8R,9S,13R,14R,15R)-14-(tert-Butyl-dimethyl-silanyloxy)-17-(tert-butyl-diphenyl-silanyloxy)-4,8-dimethoxy-6-methoxymethoxy-5,9,13,15-tetramethyl-12-oxo-heptadec-1-enyl]-[2,4';2',4'']teroxazole-4-carbaldehyde 在
二甲基溴化硼 作用下,
以
二氯甲烷 为溶剂,
反应 0.75h,
以99%的产率得到2-[2-[2-[(E,4R,5R,6R,8R,9S,13R,14R,15R)-14-[tert-butyl(dimethyl)silyl]oxy-17-[tert-butyl(diphenyl)silyl]oxy-6-hydroxy-4,8-dimethoxy-5,9,13,15-tetramethyl-12-oxoheptadec-1-enyl]-1,3-oxazol-4-yl]-1,3-oxazol-4-yl]-1,3-oxazole-4-carbaldehyde