A compound represented by Formula (1), Formula (2), or Formula (3), or a salt thereof, or a solvate thereof:

##STR00001## wherein R.sup.1, R.sup.2, and R.sup.3 are the same or different and each represent a hydrazine group, an N-hydroxy-acetylamino group, or an N-hydroxy-formylamino group.

The present invention provides aryl isonitrile compounds that have antibacterial properties. More specifically, the aryl isonitrile compounds of the present invention are potent inhibitors of drug resistant strains of Staphylococcus aureus.

The present invention provides aryl isonitrile compounds that have antibacterial properties. More specifically, the aryl isonitrile compounds of the present invention are potent inhibitors of drug resistant strains of Staphylococcus aureus.

A compound represented by the formula below:

##STR00001##

wherein R is selected from the group consisting of benzyl, C.sub.3-11 alkyl, C.sub.3-11 alkenyl, C.sub.2-9 branched alkenyl, C.sub.3-9 branched alkyl, and CH.sub.2OAc.

A compound represented by the formula below:

##STR00001##

wherein R is selected from the group consisting of benzyl, C.sub.3-11 alkyl, C.sub.3-11 alkenyl, C.sub.2-9 branched alkenyl, C.sub.3-9 branched alkyl, and CH.sub.2OAc.

Compounds of formula (I) or formula (II) are disclosed:

##STR00001##

Wherein Y.sub.1, Y.sub.2 and Y.sub.3 are independently selected from CR.sub.1 or N. Such compounds find use as antibiotics and antifungals.

Compounds of formula (I) or formula (II) are disclosed:

##STR00001##

Wherein Y.sub.1, Y.sub.2 and Y.sub.3 are independently selected from CR.sub.1 or N. Such compounds find use as antibiotics and antifungals.

A compound represented by the formula below:

##STR00001##

wherein R is selected from the group consisting of benzyl, C.sub.3-11 alkyl, C.sub.3-11 alkenyl, C.sub.2-9 branched alkenyl, C.sub.3-9 branched alkyl, and CH.sub.2OAc.

Compounds of the formula (I), in which the substituents are as defined in claim 1, are suitable for use as nematicides. ##STR00001##

Compounds of the formula (I), in which the substituents are as defined in claim 1, are suitable for use as nematicides. ##STR00001##