13-Halo and 13-deoxy derivatives of modified milbemycin compounds and their preparation
申请人:Merck & Co., Inc.
公开号:EP0002615A2
公开(公告)日:1979-06-27
The invention provides novel compounds having the formula:
where the broken line indicates a single or a double bond;
R, is hydrogen or halogen;
R2 is hydrogen, methyl or loweralkanoyl;
R3 is n-propyl or sec-butyl; and
R4 is present only when the broken line indicates a single bond and represents hydrogen, hydroxy, loweralkanoyloxy, loweralkylthio, loweralkylsulfinyl, loweralkylsulfonyl or loweralkoxy. These compounds are derivatives of C-076 compounds in which the 13-position is unsubstituted or halogen-substituted. The compounds are prepared by removing the glycosyl groups on the 13-position of the C-076 compounds isolated from the fermentation broth of Streptomyces avermitilis, followed by halogenation and, if desired, by subsequent removal of the halogen. The disclosed compounds are antiparasitic, anthelmintic, insecticidal and acaricidal agents and their use as such also forms part of the invention.
本发明提供了具有以下式子的新型化合物:
其中断线表示单键或双键;
R,是氢或卤素
R2 是氢、甲基或低级烷酰基
R3 是正丙基或仲丁基;以及
R4 仅在断线表示单键时存在,代表氢、羟基、低级烷酰氧基、低级烷硫基、低级烷基亚磺酰基、低级烷基磺酰基或低级烷氧基。这些化合物是 C-076 化合物的衍生物,其中 13 位未被取代或被卤素取代。这些化合物的制备方法是去除从阿维米利斯链霉菌(Streptomyces avermitilis)发酵液中分离出来的 C-076 化合物 13 位上的糖基,然后进行卤化,如果需要,再去除卤素。所公开的化合物是抗寄生虫、驱虫、杀虫和杀螨剂,其用途也是本发明的一部分。