4''-O-(4-methylphenoxythionocarbonyl)-5-O-tert-butyldimethylsilylavermectin B1b 、 4''-O-(4-methylphenoxythionocarbonyl)-5-O-tert-butyldimethylsilylavermectin B1a 、
烯丙基三丁基锡 在
1,1'-偶氮(氰基环己烷) 作用下,
以
氯苯 为溶剂,
反应 20.0h,
生成
5-O-TBDMS-4''-deoxyavermectin B1b 、 5-O-TBDMS-4''-deoxyavermectin B1a 、
5-O-tert-butyldimethylsilyl-4''-deoxy-4''-(R)-allylavermectin B1b 、
5-O-tert-butyldimethylsilyl-4''-deoxy-4''-(S)-allylavermectin B1b 、 5-O-tert-butyldimethylsilyl-4''-deoxy-4''-(R)-allylavermectin B1a 、 5-O-tert-butyldimethylsilyl-4''-deoxy-4''-(S)-allylavermectin B1a