Abstract: A process for the production of indole derivatives, which is characterized in that in the presence of phosphoric acid a substitution with an imine is performed, and intermediate products of this process and the production of these intermediate products are described.

Abstract: A novel cyclohexane compound represented by the general formula (I), ##STR1## wherein R.sup.1 represents a hydrogen atom or a (C.sub.1 -C.sub.6)alkyl or (C.sub.1 -C.sub.4)alkoxymethyl group, R.sup.2 represents a (C.sub.1 -C.sub.12)-alkyl, (C.sub.3 -C.sub.6)alkenyl, (C.sub.3 -C.sub.6)alkynyl, (C.sub.3 -C.sub.6)cycloalkylmethyl, halo(C.sub.3 -C.sub.6)alkenyl, cyano(C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkoxymethyl, (C.sub.1 -C.sub.4)alkylthiomethyl or benzyl group, R.sup.3 represents a hydrogen atom or a methyl group, R.sup.4 represents a hydrogen atom or a methyl group, R.sup.5 is a hydrogen atom or a methyl group, and when R.sup.5 is a hydrogen atom, R.sup.6 is a hydrogen atom or a (C.sub.1 -C.sub.4)-alkoxycarbonyl group, and when R.sup.5 is a methyl group, R.sup.

Abstract: Pyrrole derivatives of formula (I): ##STR1## in which A forms with the pyrrole ring an isoindoline, 6,7-dihydro-5H-pyrrolo[3,4-b]pyrazine, 2,3,6,7-tetrahydro-5H-[1,4]oxathiino[2,3-c]pyrrole or 2,3,6,7-tetrahydro-5H-[1,4]dithiino[2,3-c]pyrrole ring-system, Het.dbd.naphthyridinyl, pyridyl or quinolyl which are unsubstituted or substituted with halogen, (1 to 4 C) alkyl, (1 to 4 C) alkyloxy, (1 to 4 C) alkylthio or CF.sub.3, Y.dbd.CO, C.dbd.NOH or CHOH and R.dbd.(3 to 10 C) alkenyl, alkyl which is unsubstituted or substituted with OH, alkyloxy, alkylthio, (3 to 6 C) cycloalkyl, NH.sub.2, alkylamino, dialkylamino, alkylcarbonylamino, piperazinyl, piperidyl, 1-azetidinyl, morpholino, pyrrolidinyl, carbamoyl, alkylcarbamoyl, dialkylcarbamoyl, (1-piperazinyl)carbonyl, piperidinocarbonyl, pyrrolidinocarbonyl, phenyl, pyridyl, 1-imidazolyl or alternatively R.dbd.