5-O-tert-butyldimethylsilyl-4'-deoxy-4'-(S)-allylavermectin B1b monosaccharide 、 5-O-tert-butyldimethylsilyl-4'-deoxy-4'-(S)-allylavermectin B1a monosaccharide 在
[1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene]dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium 作用下,
以
二氯甲烷 为溶剂,
反应 8.0h,
生成
5-O-tert-butyldimethylsilyl-4'-deoxy-4'-(S)-(3-methoxycarbonylallyl)avermectin B1b monosaccharide 、 5-O-tert-butyldimethylsilyl-4'-deoxy-4'-(S)-(3-methoxycarbonylallyl)avermectin B1a monosaccharide