Abstract: Compounds of the formula ##STR1## wherein Z is a direct bond or alkylene of 1 - 3 carbon atoms which is unsubstituted or substituted on the carbon atom alpha to the phenyl group by alkyl or unsubstituted or substituted phenyl, R.sub.2 and R.sub.3 singly are H, alkyl, alkoxy, alkylmercapto, halo, nitro or, collectively, C.sub.4 H.sub.4, and R.sub.4 is alkenyl, alkinyl, unsubstituted or substituted phenyl or phenylalkyl, or, when Z is substituted methylene, also alkyl, are useful in combating Germatophyte infections, especially Trichophyton rubrum and mentagrophytes, and yeast infections, especially Candida albicans, as well as bacterial and fungal infections.

Abstract: Compounds of the formula v,2/12Wherein R.sub.1 is H, lower-alkyl, hydroxyalkyl, phenyl, aralkyl, or --(CH.sub.2) .sub.n --X wherein n is 0-4 and X is --COO-lower-alkyl, C.tbd.N or --COOH and R.sub.2 is H, lower-alkyl or aralkyl, produced by condensing a diamine of the formula ##SPC1##With a nitro compound of the formula R.sub.1 --CH.sub.2 --NO.sub.2 in the presence of formalin or paraformaldehyde, or with the R.sub.1 -- C(CH.sub.2 OH).sub.2 NO.sub.2 reaction product of the above nitro compound and formalin or paraformaldehyde, or with formalin or paraformaldehyde followed by reaction with the above nitro compound, and their acid addition salts, possess antimicrobial activity against both gram-positive and gram-negative bacteria and also against dermatophytes, yeasts and other fungi.