HETEROCYCLIC COMPOUNDS

摘要

A compound of formula (I) : in which Ar is an optionally substituted aryl or heterocyclic ring system; W is O or NR<1> where R<1> is hydrogen or lower alkyl; A is=CH or >CH2 and B is=C-R<2>, > C=R<5> such that -B-A- is where R<2> is H or CR<6> R<7>XR<8>; or -B-A- is where CR<3>R<4> is CH-CR<6>R<7>XR<8>, CH-OCR<6>R<7>XR<8>, C(R<9>)OCOR<1><0>, CR<9>R<1><0>, C(R<9>))OCOR<1><0>, C(R<9>)OR<1><0>, C(OR<9>)OR<1><0>, or CH-CH2(CO2R<1><1>); or -B-A- is where R5 is =CR<7>XR<8>, =NOCR<6>R<7>XR<8>, =NOR<1><1> or =NOCOR<1><1>. where X is (CH2)n, CH=CH, CH(OR<2><0>)CH2, COCH2; and n is O, 1 or 2; R<6> and R<7> are independently selected from H, optionally substituted alkyl, alkenyl or alkynyl, halogen, NR<9>R<1><0>, or R<6> and R<7> together with the carbon to which they are attached form an optionally substituted alkenyl or cycloalkyl group; R<8> is CO2R<1><2>, CN, COR<1><2>, CH2OR<1><2>, CH(OH)R<1><2>, CH(OR<1><2>)R<1><3>, CSNH2, COSR<1><2>, CSOR<1><2>, CONHSO2R<1><2>, CONR<1><4>R<1><5>, CONHNR<1><4>R<1><5>, CONHN<+>R<1><4>R<1><5>R<1><6>R<1><7>, CO2<-><+>R<1><9><+> or COON=CR<1><4>R<1><5>; R<1><9><+> is an agriculturally acceptable cation; R<1><7><-> is an agriculturally acceptable anion; R<9>, R<1><0>, R<1><4>, R<1><5> and R<1><6> are independently selected from H or an optionally substituted alkyl, alkenyl, aryl or alkynyl group or any two of R<9>, R<1><0>, R<1><4> and R<1><5>, R<1><6> together with the atom to which they are attached form a cycloalkyl or heterocyclic ring, and R<1><4> and R<1><5> may additionally be a heterocyclic ring, provided that when B is CR<9>R<1><0> or C(R<9>)OR<1><0>, R<9> and R<1><0> are not both hydrogen.