A salt selected from the group consisting of acetate, adipate, alginate, aspartate, benzoate, benzenesulfonate, bisulfate, butyrate, camphorate, camphorsulfonate, digluconate, cyclopentanepropionate, dodecylsulfate, ethanesulfonate, glucoheptanoate, glycerophosphate, hemisulfate, heptanoate, hexanoate, fumarate, hydrobromide, hydroiodide, 2-hydroxy-ethanesulfonate, lactate, nicotinate, 2-naphthalenesulfonate, palmoate, pectinate, persulfate, 3-phenylpropionate, picrate, pivalate, propionate, tartrate, thiocyanate, tosylate, mesylate and undecanoate of a compound of the formula:
- ##STR738## wherein n represents 1 or 2;
- R.sup.1 represents alkyl of 1-5 carbon atoms, alkenyl of 2-5 carbon atoms, alkynyl of 2-5 carbon atoms, hydroxyalkyl of 1-3 carbon atoms, alkoxyalkyl of 1-3 alkyl and 1-3 alkoxy carbon atoms, cyanoalkyl of 1-3 alkyl carbon atoms, imidazolylmethyl, --CH.sub.2 CONH.sub.2, --CH.sub.2 CH.sub.2 CONH.sub.2, --CH.sub.2 S(O).sub.2 NH.sub.2, --CH.sub.2 SCH.sub.3, --CH.sub.2 S(O)CH.sub.3, --CH.sub.2 S(O).sub.2 CH.sub.3, --C(CH.sub.3).sub.2 SCH.sub.3, --C(CH.sub.3).sub.2 S(O)CH.sub.3 or --C(CH.sub.3).sub.2 S(O).sub.2 CH.sub.3 radicals;
- R.sup.2 represents radicals of alkyl of 1-5 carbon atoms, aralkyl of 1-3 alkyl carbon atoms, alkylthioalkyl of 1-3 alkyl carbon atoms, arylthioalkyl of 1-3 alkyl carbon atoms or cycloalkylalkyl of 1-3 alkyl carbon atoms and 3-6 ring member carbon atoms;
- R.sup.3 represents radicals of alkyl radical of 1-5 carbon atoms, cycloalkyl of 5-8 ring members or cycloalkylmethyl radical of 3-6 ring members;
- R.sup.4 represents aryl, benzo fused 5 to 6 ring member heteroaryl or benzo fused 5 to 6 ring member heterocyclo radicals;
- or a radical of the formula:
- ##STR739## wherein A and B each independently represent O, S, SO or SO.sub.2 ;
- R.sup.6 represents deuterium, alkyl of 1-5 carbon atoms, fluoro or chloro radicals;
- R.sup.7 prepresents hydrogen, deuterium, methyl, fluoro or chloro radicals;
- or a radical of the formula ##STR740## wherein Z represents O, S, or NH;
- and R.sup.9 represents a radical of the formula ##STR741## wherein Y represents O, S or NH;
- X represents a bond, O or NR.sup.21 ;
- R.sup.20 represents hydrogen, alkyl of 1 to 5 carbon atoms, alkenyl of 2 to 5 carbon atoms, alkynyl of 2 to 5 carbon atoms, heteroaralkyl of 5 to 6 ring members and 1 to 5 alkyl carbon atoms, heterocycloalkyl of 5 to 6 ring members and 1 to 5 alkyl carbon atoms, aminoalkyl of 2 to 5 carbon atoms, N-mono-substituted or N,N-disubstituted aminoalkyl of 2 to 5 alkyl carbon atoms wherein said substituents are radicals of alkyl of 1 to 3 carbon atoms, aralkyl of 1 to 3 alkyl carbon atoms radicals, carboxyalkyl of 1 to 5 carbon atoms, alkoxycarbonylalkyl of 1 to 5 alkyl carbon atoms, cyanoalkyl of 1 to 5 carbon atoms or hydroxyalkyl of 2 to 5 carbon atoms;
- R.sup.21 represents hydrogen radical or alkyl radical of 1 to 3 carbon atoms;
- or the radical of formula --NR.sup.20 R.sup.21 represents a 5 to 6 ring member heterocyclo radical;
- R.sup.22 represents alkyl radical of 1 to 3 carbon atoms or R.sup.20 R.sup.21 N-alkyl radical of 1 to 3 alkyl carbon atoms;
- R.sup.10 represents hydrogen, alkyl, hydroxyalkyl or alkoxyalkyl radicals, wherein alkyl is 1-3 carbon atoms;
- R.sup.11 represents hydrogen, alkyl of 1-5 carbon atoms, hydroxyalkyl of 1-4 carbon atoms, alkoxyalkl of 1-3 alkyl carbon atoms, benzyl, imidazolylmethyl, --CH.sub.2 CH.sub.2 CONH.sub.2, --CH.sub.2 CONH.sub.2, --CH.sub.2 CH.sub.2 SCH.sub.3 or --CH.sub.2 SCH.sub.3 radicals or the sulfone or sulfoxide derivatives thereof;
- R.sup.12 represents hydrogen, hydroxyalkyl or alkoxyalkyl radicals, wherein alkyl is 1-3 carbon atoms;
- and
- R.sup.13 and R.sup.14 each independently represent hydrogen, hydroxy, alkoxy, 2-hydroxyethoxy, hydroxyalkyl or alkoxyalkyl radicals, wherein alkyl is 1-3 carbon atoms;
- or R.sup.12 and R.sup.13 or R.sup.13 and R.sup.14 along with the carbon atoms to which they are attached represent 5-6 ring membered heteroaryl or benzo radical, each of which is optionally substituted with at least one hydroxy or alkoxy radical of 1-3 carbon atoms.