Abstract: The present invention relates to 4-hydroxy-piperidine derivatives of the general formula wherein X denotes —O—, —NH—, —CH2—, —CH═, —CHOH—, —CO—, —S—, —SO— or —SO2—; R1-R4 are, independently from each other, hydrogen, hydroxy, lower-alkyl-sulfonylamino, 1- or 2-imidazolyl or acetamido; R5-R8 are, independently from each other, hydrogen, hydroxy, lower-alkyl, halogen, lower-alkoxy, trifluoromethyl or trifluoromethyloxy; a and b may be a double bond, provided that when “a” is a double bond, “b” cannot be a double bond; n is 0-2; m is 1-3; p is 0 or 1 and to pharmaceutically acceptable addition salts thereof. Compounds of the present invention are NMDA(N-methyl-D-aspartate)-receptor subtype selective blockers, which can be used in mediating processes underlying development of CNS including learning and memory formation and function.

Abstract: The invention relates to compounds of the general formula wherein R1 signifies hydrogen or hydroxy; R2 signifies hydrogen or methyl; and X signifies —O— or —CH2— and their pharmaceutically acceptable acid addition salts. It has been shown that these compounds have a good affitity to the NMDA receptor and they are therefore useful in the treatment of diseases, wherein the therapeutic indications include acute forms of neurodegeneration caused, e.g., by stroke or brain trauma; chronic forms of neurodegeneration such as Alzheimer's disease, Parkinson's disease, Huntington's disease or ALS (amyotrophic lateral sclerosis); neurodegeneration associated with bacterial or viral infections, and, diseases such as schizophrenia, anxiety, depression and chronic/acute pain.

Abstract: The present invention relates to triazole and imidazole derivatives of formula I and to their pharmaceutically acceptable acid addition salts. These compounds are NMDA receptor subtype blockers and are useful for the treatment of diseases related to the NMDA receptor.

Abstract: The present invention provides a method of treatment of a disease associated with neurodegeneration by administering a therapeutically effective amount of a compound of the general formula wherein Ar1 is phenyl, naphthyl or tetrahydronaphthyl, optionally substituted by hydroxy, lower alkoxy, nitro, amino or methanesulfonamide; Ar2 is phenyl, naphthyl or tetrahydronaphthyl, optionally substituted by lower alkyl or halogen; X is C, CH, C(OH) or N; Y is —CH2−, CH or O; Z —CH2—, —CH(CH3)— or —C(CH3)2—; R1 is hydrogen, lower alkyl or acetyl; A is C═O or —(CHR2)n—, wherein R2 is hydrogen, lower alkyl or hydroxy-lower alkyl; B is —(CH2)n—, O, —CH(OH)(CH2)n—, —CH(CH2OH)(CH2)n—, —(CH2)n CH(OH)— or —CH(CH2OH)—; - - - may be a bond; and n is 0-4, or pharmaceutically acceptable acid addition salts thereof.

Abstract: The present invention relates to the use of pyrrolidine and piperidine derivatives of the general formula ##STR1## wherein R.sup.1 and R.sup.2 are, independently from each other, hydrogen, lower alkoxy, hydroxy, halogen, --CONH.sub.2 or --C(O)O-lower alkyl; or taken together are --O--CH.sub.2 O;R.sup.3 and R.sup.4 are, independently from each other, hydrogen, lower alkoxy, benzyloxy, halogen, hydroxy, --CONH.sub.2 or --SCH3; or taken together are --O--CH.sub.2 --O--;R.sup.5 is hydrogen or lower alkyl;X and Y are, independently from each other --CH(OH)--, --(CH.sub.2).sub.n --, --C(O)-- or --CH(lower alkoxy)-; andin, n and p are 1 or 2;and to their pharmaceutically acceptable addition salts for the treatment of diseases caused by over activation of NMDA receptor subtypes.

Abstract: The present invention relates to the use of tetrahydroisoquinoline derivatives of the general formula: ##STR1## wherein: A is arylR.sup.1 is hydrogen, hydroxy, lower alkyl, lower alkoxy, R--CO-- or R--COO--, wherein R is lower alkyl;R.sup.2 is hydrogen, lower alkyl or cycloalkylR.sup.3 -R.sup.7 are independently hydrogen, lower alkyl, lower alkoxy, hydroxy orR.sup.3 and R.sup.4 taken together are --(CH.sub.2).sub.n -- orR.sup.6 and R.sup.7 taken together are --OCH.sub.2 O-- andn is 3 or 4,as well as pharmaceutically acceptable salts for the manufacture of medicaments for the control or treatment of diseases which represent therapeutic indications for NMDA receptor subtype specific blockers.

Abstract: The present invention relates to the use of pyrrolidine and piperidine derivatives of the general formula ##STR1## wherein R.sup.1 and R.sup.2 are, independently from each other, hydrogen, lower alkoxy, hydroxy, halogen, --CONH.sub.2 or --C(O)O-lower alkyl; or taken together are --O--CH.sub.2 O;R.sup.3 and R.sup.4 are, independently from each other, hydrogen, lower alkoxy, benzyloxy, halogen, hydroxy, --CONH.sub.2 or --SCH.sub.3 ; or taken together are --O--CH.sub.2 --O--;Y is --CH(OH)--, --(CH.sub.2).sub.n --, --C(O)-- or --CH(lower alkoxy)--; andm, n and p are 1 or 2;and to their pharmaceutically acceptable addition salts for the treatment of diseases caused by over activation of NMDA receptor subtypes.

Abstract: The invention is concerned with basically-substituted imidazodiazepines of general formula I. These compounds can be used as anxiolytic and/or anticonvulsant and/or muscle relaxant and/or sedative-hypnotic active substances.

Abstract: The present invention relates to the use of tetrahydroisoquinoline derivatives of the general formula ##STR1## wherein A is arylR.sup.1 is hydrogen, hydroxy, lower alkyl, lower alkoxy, R--CO-- or R--COO--, wherein R is lower alkyl;R.sup.2 is hydrogen, lower alkyl or cycloalkylR.sup.3 -R.sup.7 are independently hydrogen, lower alkyl, lower alkoxy, hydroxy orR.sup.3 and R.sup.4 taken together are --(CH.sub.2).sub.n -- orR.sup.6 and R.sup.7 taken together are --OCH.sub.2 O-- andn is 3 or 4,as well as pharmaceutically acceptable salts for the manufacture of medicaments for the control or treatment of diseases which represent therapeutic indications for NMDA receptor subtype specific blockers.

Abstract: The present invention relates to compounds of the formula ##STR1## wherein x is --O--, --NH--, --CH.sub.2 --, --CH.dbd., --CO.sub.2 --, --CONH--, --CON(lower alkyl)--, --S-- and --SO.sub.2 --;R.sup.1 -R.sup.4 are, independently from each other hydrogen, halogen, hydroxy, amino, nitro, lower-alkyl-sulfonylamido, 1- or 2-imidazolyl, 1-(1,2,4-triazolyl) or acetamido;R.sup.5, R.sup.6 are, independently from each other hydrogen, lower-alkyl, hydroxy, lower alkoxy or oxo;R.sup.7 -R.sup.10 are, independently from each other hydrogen, lower-alkyl, halogen, trifluoromethyl or lower-alkoxy;n is 0 or 1;and to pharmaceutically acceptable acid addition salts thereof. Compounds of the present invention are NMDA(N-methyl-D-aspartate)-receptor subtype selective blockers.

Abstract: The invention is concerned with basically-substituted imidazodiazepinones of the formula: ##STR1## wherein A and the two carbon atoms denoted by .alpha. and .beta. together signify: ##STR2## Q signifies one of the residues: ##STR3## R.sup.1 and R.sup.2 each signify hydrogen, lower alkyl, lower alkenyl, lower alkynyl, lower hydroxyalkyl, lower alkoxy-lower alkyl, (C.sub.3 -C.sub.6)-cycloalkyl, (C.sub.3 -C.sub.6)-cycloalkyl-lower alkyl, amino-lower alkyl, lower alkylamino-lower alkyl, di-lower alkylamino-lower alkyl or aryl-lower alkyl or together with the nitrogen atom signify a 5- to 8-membered heterocycle optionally containing a further hetero atom or a fused benzene ring; R.sup.3 signifies hydrogen and R.sup.4 signifies lower alkyl or R.sup.3 and R.sup.4 together signify a di- or trimethylene group and; R.sup.5 and R.sup.6 each signify hydrogen, halogen, trifluoromethyl, lower alkoxy or nitro; with the carbon atom denoted by .gamma. having the S-configuration when R.sup.

Abstract: Compounds of general formula (Ia), (Ib) and (II), wherein R.sup.1 and R.sup.2 each independently signify hydrogen, lower alkyl, lower alkoxy, nitro, trifluoromethyl, amino, halogen, cyano or R.sup.3 R.sup.4 NS(O).sub.2 -- and R.sup.3 and R.sup.4 signify lower alkyl, and R.sup.2 can additionally signify morpholino or thiomorpholino, a 5- or 6-membered heterocycle with 1-3N atoms optionally substituted by lower alkyl, hydroxy, amino or the group --CH.sub.2 NHCH.sub.3, a bicyclic heterocycle with 1-3N atoms or a group --NR.sup.5 R.sup.6 or --OR.sup.5 in which R.sup.5 and R.sup.6 can be the same or different and signify hydrogen, lower alkyl, hydroxy-lower alkyl, lower alkoxy-lower alkyl, amino-lower alkyl or lower alkylamino-lower alkyl, and X in formula (II) signifies --CH.dbd.CH--, --CH.dbd.N--, --NH--, --CO-- or --O--, as well as pharmaceutically usable salts of compounds of general formula (Ia), (Ib) and (II).