申请人:Eli Lilly and Company
公开号:US04791110A1
公开(公告)日:1988-12-13
Plants are protected from the damaging effects of Phycomycetous fungi by a series of pyridazines of formula ##STR1## wherein R.sup.3 is chloro, bromo, methyl, cyano or iodo; R is chloro, bromo, iodo, methyl, cyano or furan-2-ylmethoxy; R.sup.1 is hydrogen, methyl, ethyl or n-propyl; R.sup.2 is ##STR2## X is fluoro, chloro, bromo or iodo; X.sup.1 and X.sup.2 independently represent X or hydrogen, provided that no more than one of X.sup.1 and X.sup.2 is hydrogen; R.sup.4 is hydrogen, chloro, bromo, methyl or ethyl; R.sup.5 is hydrogen, chloro, methyl, ethyl, chloromethyl or dichloromethyl; or R.sup.4 and R.sup.5 combine with the group to which they are attached to form a C.sub.3 -C.sub.7 cycloalkyl group substituted with a R.sup.1 group; R.sup.6 is hydrogen, chloro, bromo, methyl or ethyl; R.sup.7 is hydrogen, methyl, ethyl, chloromethyl or dichloromethyl; one of m and n is 0 or 1, and the other is 0; p is 0-4.
植物通过一系列的吡啶嗪化合物的保护作用,防止了Phycomycetous真菌的破坏性影响。其中化学式为##STR1##,其中R.sup.3为氯、溴、甲基、氰基或碘;R为氯、溴、碘、甲基、氰基或呋喃-2-基甲氧基;R.sup.1为氢、甲基、乙基或正丙基;R.sup.2为##STR2##,X为氟、氯、溴或碘;X.sup.1和X.sup.2独立地代表X或氢,前提是X.sup.1和X.sup.2中最多只有一个是氢;R.sup.4为氢、氯、溴、甲基或乙基;R.sup.5为氢、氯、甲基、乙基、氯甲基或二氯甲基;或者R.sup.4和R.sup.5与它们附着的基团结合形成一个取代有R.sup.1基团的C.sub.3 -C.sub.7环烷基;R.sup.6为氢、氯、溴、甲基或乙基;R.sup.7为氢、甲基、乙基、氯甲基或二氯甲基;m和n中的一个为0或1,另一个为0;p为0-4。