Microbiocidal heterobicyclic derivatives

A compound of formula I:

• Wherein
• A is O, S or NR6;
• Y—X represents a radical selected from G1, G2, G3 and G4:
• R1 and R2 are each independently selected from hydrogen, cyano, C1-C6 alkyl, C3-C7 cycloalkyl, C2-C6 alkenyl and C2-C6 alkynyl, in which the alkyl, cycloalkyl, alkenyl and alkynyl groups may be optionally substituted with 1 to 3 substituents independently selected from halogen, C1-C6 alkoxy and C1-C6 alkylthio;
• or
• R1 and R2 together with the carbon atom to which they are attached represent a C3-C10 cycloalkyl group (which may be optionally substituted with 1 to 3 substituents independently selected from the group consisting of halogen, C1-C6 alkyl, C1-C6 alkoxy and C1-C6 alkylthio);
• R3 and R4 are each independently selected from hydrogen, halogen, hydroxyl, C1-C6 alkyl, C1-C6 alkoxy, C3-C7 cycloalkyl, C2-C6 alkenyl and C2-C6 alkynyl, in which the alkyl, alkoxy, cycloalkyl, alkenyl and alkynyl groups may be optionally substituted with 1 to 3 substituents independently selected from halogen, C1-C6 alkoxy and C1-C6 alkylthio;
• or
• R3 and R4 together with the carbon atom to which they are attached represent C═O, C═NORd, C═C(Rb)(Rc) or C3-C10 cycloalkyl (which may be optionally substituted with 1 to 3 substituents independently selected from the group consisting of a halogen, C1-C6 alkyl, C1-C6 alkoxy and C1-C6 alkylthio);
• where Rb and Rc are each independently selected from hydrogen, halogen, cyano, C1-C6 alkyl, C3-C7 cycloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, C1-C6 alkoxy and C1-C6 alkylthio, in which the alkyl, cycloalkyl, alkenyl and alkynyl groups may be optionally substituted with 1 to 3 substituents independently selected from halogen, C1-C6 alkoxy and C1-C6 alkylthio, and where Rd is selected from hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C3-C6 alkenyl and C3-C6 alkynyl, in which the alkyl, cycloalkyl, alkenyl and alkynyl groups may be optionally substituted with 1 to 3 substituents independently selected from halogen, C1-C6 alkoxy and C1-C6 alkylthio;
• or
• R2 and R3 together with the carbon atoms to which they are attached represent a C3-C10 cycloalkyl (which may be optionally substituted with 1 to 3 substituents independently selected from the group consisting of halogen, C1-C6 alkyl, C1-C6 alkoxy and C1-C6 alkylthio, and, additionally, a ring carbon unit may be replaced by an oxygen or sulphur atom);
• each R5 independently represents halogen, hydroxyl, mercapto, nitro, cyano, formyl, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, C3-C7 cycloalkyl, C1-C6 alkoxy, C3-C6 alkenyloxy, C3-C6 alkynyloxy, C1-C6 alkylthio, —C(═NORa)C1-C6alkyl, C1-C6 alkylcarbonyl, aryl, heteroraryl, aryloxy or heteroraryloxy, in which the alkyl, cycloalkyl, alkenyl, alkynyl, alkoxy, alkenyloxy, alkynyloxy, aryl and heteroaryl groups may be optionally substituted with 1 to 5 substituents independently selected from halogen, C1-C6 alkyl, C1-C6 alkoxy, cyano and C1-C6 alkylthio;
• n is 0, 1, 2, 3 or 4;
• R6 is hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl;
• each R7 independently represents hydroxyl, mercapto, cyano, halogen, C1-C6 alkyl, C1-C6 haloalkyl, C2-C6 alkenyl, C2-C6 alkynyl, C2-C6 haloalkenyl, C3-C6 haloalkynyl, C1-C6 alkylthio, C1-C6 haloalkoxy, C1-C6 haloalkylthio, C1-C6 alkoxycarbonyl, C1-C6 alkylcarbonyl, C3-C7 cycloalkyl, C1-C6 alkoxy, C3-C6 alkenyloxy or C3-C6 alkynyloxy;
• m is 0, 1, 2, 3 or 4;
• and
• Ra is hydrogen, C1-C6 alkylcarbonyl or C1-C6 alkyl, which may be optionally substituted with 1 to 3 substituents independently selected from the group consisting of halogen, C1-C6 alkoxy, C1-C6 alkylthio and phenoxy;
• or a salt or N-oxide thereof, provided that the compound is not