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    • 6. 发明授权
    • Synthetic marcfortine derivatives useful as antiparasitic agents
    • 用作抗寄生虫剂的合成马可氟汀衍生物
    • US4923867A
    • 1990-05-08
    • US235418
    • 1988-08-24
    • Timothy A. BlizzardHelmut Mrozik
    • Timothy A. BlizzardHelmut Mrozik
    • A01N43/90C07D491/22
    • C07D491/22A01N43/90
    • There are disclosed synthetic marcfortine derivatives of the natural products marcfortine A, marcfortine B, and marcfortine C. The synthetic derivatives are described in the following formula: ##STR1## wherein: n is 0 or 1R.sub.1 is hydrogen, loweralkyl, benzyl, lower alkanoyl, benzenesulfonyl in which the benzene ring is substituted with from 0 to 3 substituents selected from lower alkyl groups, lower alkoxy groups and halogen atoms, lower alkylamino-carbonyl, lower alkoxy-carbonyl;R.sub.24 is hydrogen, halogen or lower alkoxy (provided that R.sub.24 is other than hydrogen only if the broken line represents a single bond at the 24, 25-position),R.sub.25 is hydrogen or halogen (provided that R.sub.25 is other than hydrogen only if the broken line represents a single bond at the 24, 25-position);R.sub.29 is hydrogen, lower alkyl, alkoxyalkyl, haloalkyl, lower alkenyl, lower alkynyl, benzyl, lower alkanoyl, substituted benzenesulfonyl, lower alkylamino-carbonyl, not hydrogen or methyl if R.sub.1 is hydrogen; and the broken line represents a single or double bond between carbons 24 and 25.The compounds are active antiparasitic agents useful in particular against insect and nematode pests, and compositions for that use are disclosed.
    • 公开了天然产物马可氟汀A,马可氟汀B和马可氟汀C的合成马可氟汀衍生物。合成衍生物描述于下式中:其中:n为0或1,R1为氢,低级烷基,苄基,低级烷酰基 苯磺酰基,其中苯环被0-3个选自低级烷基,低级烷氧基和卤素原子的取代基取代,低级烷基氨基 - 羰基,低级烷氧羰基; R24是氢,卤素或低级烷氧基(只要虚线表示24,25位的单键,R24不是氢),R25是氢或卤素(只要R25不是氢,只要是 虚线代表24,25位的单键); 如果R1是氢,R29是氢,低级烷基,烷氧基烷基,卤代烷基,低级烯基,低级炔基,苄基,低级烷酰基,取代的苯磺酰基,低级烷基氨基 - 羰基,不是氢或甲基; 并且虚线表示碳24和25之间的单键或双键。化合物是有效的抗寄生虫剂,特别适用于昆虫和线虫害虫,并且公开了该用途的组合物。