发明授权
US5362862A Process for 4"-EPI-acetylamino-4"-deoxy-5-oximinoavermectin-B.sub.1 失效
4“ - 乙酰氨基-4” - 脱氧-5-肟基维生素B1的方法

Process for 4
摘要:
An improved process for formation of a 5-oxime on avermectin derivatives comprises the treatment of the oxo compound with O-(trimethylsilyl)hydroxylamine in the presence of a Lewis acid.
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