2-[(6-deoxy-3-O-ethyl-2,4-di-O-methyl-alpha-L-mannopyranosyl)oxy]-9-ethyl-2R,3,3aR,4,5,5aR,5bS,6,9S,10,11,12,13S,14R,16aS,16bR-hexadecahydro-13-hydroxy-14-methyl-1H-as-indaceno[3,2-d]oxacyclododecin-7,15-dione 、
1,4-di(2,2,2-trichloroacetimidatemethyl)benzene 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
反应 20.0h,
以68%的产率得到