Abstract: Novel benzene derivatives are provided of the general formula (I): ##STR1## [wherein R.sup.1 represents an amino group, a substituted amino group, a protected amino group, or a nitro group; R.sup.2 represents an amino group, a substituted amino group, a protected amino group, a hydroxy group, a substituted hydroxy group, or a protected hydroxy group; R.sup.3 represents an amino group, a substituted amino, a heterocyclyl group having a ring nitrogen atom as the point of binding, or a substituted heterocyclyl group having a ring nitrogen atom as the point of binding; m is 0 to 2; n is 0 to 6; with the proviso that when m is 0, then n represents an integer from 2 to 6] and salts thereof.Compounds of formula (I) except those wherein R.sup.1 is a nitro group have activity in promoting production of nerve growth factor. Compounds of formula (I) wherein R.sup.1 is a nitro group are intermediates for compounds of formula (I) wherein R.sup.1 is an amino group.

Abstract: A compound of the formula (I): ##STR1## wherein R.sup.1 is an unsubstituted or substituted amino group, a protected amino group, or a nitro group; R.sup.2 is an unsubstituted or substituted amino group, a protected amino group, an unsubstituted or substituted hydroxy group or a protected hydroxy group; R.sup.3 is an unsubstituted or substituted amino group, m is 0 to 2; n is 0 to 6; with the proviso that when m is 0, then n is an integer from 2 to 6, and pharmaceutically acceptable salts thereof. Compounds of formula (I) except those wherein R.sup.1 is a nitro group have activity in promoting the production of nerve growth factor.

Abstract: Compounds of formula (I): ##STR1## (wherein R represents hydrogen or a C.sub.1 -C.sub.3 alkyl group) have analgesic, anti-inflammatory and immuno-regulatory activities. The compounds exist in the form of cis- and trans-isomers with respect to the cyclohexyl ring, as well as a number of optical isomers.

Abstract: A method of regulating the immune system of a mammal, which comprises administering to said mammal an immuno-regulatory agent, wherein said agent is selected from the group consisting of compounds of the formula (I): ##STR1## (wherein R represents hydrogen or a C.sub.1 -C.sub.3 alkyl group) and pharmaceutically acceptable salts and esters thereof.

Abstract: Phenylacetic derivatives of formula (I): ##STR1## (wherein R represents a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group and n represents an integer from 1 to 3) and salts and esters thereof have analgesic, antipyretic and anti-inflammatory activity and may be prepared by reducing the corresponding acid or ester having an oxo group at the 2-position of the cycloalkylidene ring system and, if necessary, salifying the resulting product.