二乙基磷乙酸 、 (3S,7S,8R,10E,12E,15S,16R)-18,18-dibromo-16-(tert-butyl-dimethyl-silanyloxy)-3-hydroxy-7-(4-methoxy-benzyloxy)-8-methyl-15-[(6-deoxy-2,3,4-tri-O-methyl-α-L-mannopyranosyl)oxy]-octadeca-10,12,17-trien-9-one 在
4-二甲氨基吡啶 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、
碘甲烷 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以81%的产率得到(1S,5S,6R,8E,10E,13S,14R)-(diethoxyphosphoryl)acetic acid 16,16-dibromo-14-(tert-butyl-dimethyl-silyloxy)-1-ethyl-5-(4-methoxybenzyloxy)-6-methyl-13-[(6-deoxy-2,3,4-tri-O-methyl-α-L-mannopyranosyl)oxy]-hexadeca-8,10,15-trienyl ester