Abstract: Described herein are novel carboxylic acid amide compounds or carboximide compounds represented by the general formula: ##STR1## wherein Z represents a group of the formula (1) or (2): ##STR2## wherein R.sup.1 and R.sup.2 are hydrogen atom or methyl group, respectively; Xs, which may be the same or different, are hydrogen atom, a lower alkyl, lower alkoxy, halo, or alkyl halide group, respectively, and n represents an integer of 0 to 2, and their pharmaceutically acceptable salts; process for the production thereof; and medicines containing the same. The novel compounds are useful as treating, preventing and improving agents for diseases attended with cerebral dysfunction as well as various symptoms caused by the said diseases. Further, the compounds are useful for the improvement of neurosis of the stomach; and treatment and prevention for various constipation.

Abstract: An anti-depressant imidazole compound of the formula: ##STR1## wherein R.sub.1 is lower alkyl, R.sub.2 is hydrogen or lower alkyl, and R.sub.3, R.sub.4 and R.sub.5 are hydrogen, lower alkyl, trifluoromethyl, amino, mono- or di-lower alkylamino, heterocyclic amino, halogen or ##STR2## (in which R.sub.6 is hydrogen, lower alkyl or lower alkylsulfonyl, A is carbonyl or sulfonyl, and R.sub.7 is lower alkyl, halogenated lower alkyl, mono- or di-lower alkylamino, mono- or di-lower alkylaminoalkyl, unsubstituted phenyl or phenyl having halogen, lower alkyl, lower alkoxy or trifluoromethyl, phenylamino or phenylamino having halogen, lower alkyl, lower alkoxy or trifluoromethyl); and their pharmaceutically acceptable acid addition salts. These compounds are useful as agents for treating depression and depressive states.

Abstract: An imidazole compound of the formula: ##STR1## wherein R.sub.1 is lower alkyl, R.sub.2 is hydrogen or lower alkyl, and R.sub.3, R.sub.4 and R.sub.5 are hydrogen, lower alkyl, trifluoromethyl, amino, mono- or di-lower alkylamino, heterocyclic amino, halogen or ##STR2## (in which R.sub.6 is hydrogen, lower alkyl or lower alkylsulfonyl, A is carbonyl or sulfonyl, and R.sub.7 is lower alkyl, halogenated lower alkyl, mono- or di-lower alkylamino, mono- or di-lower alkylaminoalkyl, unsubstituted phenyl or phenyl having halogen, lower alkyl, lower alkoxy or trifluoromethyl, phenylamino or phenylamino having halogen, lower alkyl, lower alkoxy or trifluoromethyl); and their pharmaceutically acceptable acid addition salts.The compounds are useful for treating patients suffering from depression.

Abstract: An imidazole compound of the formula: ##STR1## wherein R.sub.1 is lower alkyl, R.sub.2 is hydrogen or lower alkyl, and R.sub.3, R.sub.4 and R.sub.5 are hydrogen, lower alkyl, trifluoromethyl, amino, mono- or di-lower alkylamino, heterocyclic amino, halogen or ##STR2## (in which R.sub.6 is hydrogen, lower alkyl or lower alkylsulfonyl, A is carbonyl or sulfonyl, and R.sub.7 is lower alkyl, halogenated lower alkyl, mono- or di-lower alkylamino, mono- or di-lower alkylaminoalkyl, unsubstituted phenyl or phenyl having halogen, lower alkyl, lower alkoxy or trifluoromethyl, phenylamino or phenylamino having halogen, lower alkyl, lower alkoxy or trifluoromethyl); and their pharmaceutically acceptable acid addition salts.

Abstract: New cephalosporin derivatives represented by the general formula: ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3 each represents hydroxy, acyloxy, and hydrogen provided that two or three of R.sub.1, R.sub.2, and R.sub.3 are not hydrogen at the same time, and their salts, and processes for the preparation thereof. The cephalosporin derivatives of the present invention are useful as antibacterial drugs.