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    • 10. 发明授权
    • Pyridine sulfonamides and their use as anticoccidial agents
    • 吡啶磺酰亚胺及其作为抗焦虑剂
    • US4094982A
    • 1978-06-13
    • US681154
    • 1976-04-28
    • Yasuhiro MorisawaMitsuru KataokaNoritoshi KitanoToshiaki Mastuzawa
    • Yasuhiro MorisawaMitsuru KataokaNoritoshi KitanoToshiaki Mastuzawa
    • C07D213/70C07D213/02A01N9/22
    • C07D213/70
    • Pyridine derivatives having the formula ##STR1## wherein R.sub.1 represents hydrogen atom, amino group or a group ##STR2## in which R.sub.5 and R.sub.6 may be the same or different and each represents an alkyl group of 1 to 4 carbon atoms or R.sub.5 is hydrogen atom and R.sub.6 represents an alkyl group of 1 to 4 carbon atoms, an alkenyl group of 3 or 4 carbon atoms or a benzyl group optionally substituted with halogen, cyano, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms;R.sub.2 represents nitro group, amino group or an alkylamino group of 1 to 3 carbon atoms;R.sub.3 and R.sub.4 individually represent hydrogen atom, an alkyl group of 1 to 4 carbon atoms, an alkoxyalkyl group which has 1 to 4 carbon atoms in the alkoxy moiety and 2 to 4 carbon atoms in the alkyl moiety, an alkenyl group of 3 or 4 carbon atoms, an alkanoyl group of 1 to 18 carbon atoms or a benzyl group optionally substituted with halogen, cyano, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms; provided that when R.sub.1 is hydrogen atom and R.sub.2 is nitro group, R.sub.3 and R.sub.4 may be the same or different and each represents said alkyl group or said alkoxyalkyl group or R.sub.3 is hydrogen atom and R.sub.4 is hydrogen atom, said alkyl group, said alkoxyalkyl group, said alkenyl group, said alkanoyl group or said benzyl group, when R.sub.1 is hydrogen atom and R.sub.2 is amino group or said alkylamino group, R.sub.3 and R.sub.4 individually is hydrogen atom or they may be the same or different and each represents said alkyl group, when R.sub.1 is amino group and R.sub.2 is nitro group, R.sub.3 and R.sub.4 may be the same or different and each represents said alkyl group or R.sub. 3 is hydrogen atom and R.sub.4 is said alkyl group or said alkenyl group, and when R.sub.1 is said group ##STR3## and R.sub.2 is nitro group, R.sub.3 and R.sub.4 are the same as defined above with respect to the R.sub.5 and R.sub.6.They are highly effective in the treatment of coccidiosis, especially that caused by the protozoa belonging to the species Eimeria tenella or E. necatrix.