Abstract: The present invention relates to ethynyl derivatives of formula I X, G, R1, R2, R3, R3?, R4, R4?, R5, R6, R6?, m, and n are as defined herein or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof. Compounds of formula I are positive allosteric modulators (PAM) of the metabotropic glutamate receptor subtype 5 (mGluR5). They can be used for the treatment of schizophrenia or cognitive disorders.

Abstract: The present invention relates to ethynyl derivatives of formula I wherein G, X, R1, R2, R3, R3?, R4, and R4? are as defined herein or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof. Compounds of formula I are positive allosteric modulators (PAM) of the metabotropic glutamate receptor subtype 5 (mGluR5).

Abstract: The present invention relates to ethynyl derivatives of formula I wherein Y is N or C—R3; R3 is hydrogen, methyl, halogen or nitrile; R1 is phenyl or pyridinyl, each of which is optionally substituted by halogen, lower alkyl or lower alkoxy; R2/R2? are each independently hydrogen, lower alkyl or lower alkyl substituted by halogen, or R2 and R2? together with the N-atom to which they are attached form a morpholine ring, a piperidine ring or an azetidine ring, each of which is unsubstituted or substituted one or more substituents selected from lower alkoxy, halogen, hydroxy and methyl; R4/R4? are each independently hydrogen or lower alkyl, or R4 and R4? together form a C3-5 cycloalkyl-, tetrahydrofuran- or an oxetane-ring; or to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof.

Abstract: The invention relates to methods for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica and Down syndrome which comprise administering a therapeutically effective amount of a compound of formula I wherein R1, R2, R3, V, W, Y, and Z are as defined herein or a pharmaceutically active acid addition salt of such compounds. The invention also relates to a subgenus of such compounds and pharmaceutical compositions containing them, as well as methods for their manufacture.

Abstract: The invention relates to compounds of formula wherein R1, R2, R3, R4, and Ar are as defined in the specification and claims, or to pharmaceutically active acid addition salts of such compounds. Compounds of formula I are modulators for amyloid beta and may be useful for the treatment or prevention of a disease associated with the deposition of ?-amyloid in the brain, in particular Alzheimer's disease, and other diseases such as cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica and Down syndrome.

Abstract: The present invention relates to compounds of formula I wherein R1, R2, and are defined in the specification and to pharmaceutically acceptable acid addition salts thereof.

Abstract: The present invention relates to ethynyl compounds of formula I wherein R1, R2, R2?, R3, R3?, R4, R4?, U, V, W, Y, m, and n are as defined herein and to a pharmaceutically acceptable acid addition salts, to a racemic mixtures, or to its corresponding enantiomers and/or optical isomers and/or stereoisomers thereof. Compounds of formula I are allosteric modulators of the metabotropic glutamate receptor subtype 5 (mGluR5).

Abstract: The invention relates to compounds of formula where hetaryl I, hetaryl II, R1, R2, R3, R4, m, n, and o are as defined in the specification or to pharmaceutically active acid addition salts thereof. The compounds of formula I are modulators for amyloid beta and thus may be useful for the treatment or prevention of a disease associated with the deposition of ?-amyloid in the brain, in particular Alzheimer's disease, and other diseases such as cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica and Down syndrome.

Abstract: The invention relates to compounds of formula wherein R1, R1?, R2, R3, n, A, and hetaryl are defined herein or to pharmaceutically active acid addition salts thereof. The present compounds of formula I are modulators for amyloid beta and thus, they may be useful for the treatment or prevention of a disease associated with the deposition of ?-amyloid in the brain, in particular Alzheimer's disease, and other diseases such as cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica and Down syndrome.

Abstract: The present invention relates to ethynyl compounds of formula wherein X, Y, Z, and R4 are as defined herein or to a pharmaceutically acceptable salt or acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof. Compounds of formula I are positive allosteric modulators (PAM) of the metabotropic glutamate receptor subtype 5 (mGluR5) and they are therefore useful for the treatment of diseases related to this receptor.

Abstract: The present invention relates to compounds of formula I wherein R1, R2, R3, R4, R5, X, and n are as defined herein and the dotted line denotes an optional bond and pharmaceutically acceptable acid addition salts thereof. The compounds are useful in the treatment of neurological and neuropsychiatric disorders.

Abstract: The present invention relates to compounds of formula I wherein R1, R2, R3, X, n, and m are as defined herein and to pharmaceutically acceptable acid addition salts thereof, to pharmaceutical compositions containing them, and to methods for treating neurological and neuropsychiatric disorders.

Abstract: The present invention relates to phenylethynyl compounds of formula I wherein R1, R2, X, L, R3, R4, R4?, cyc, and n are as defined in the specification and claims and to a pharmaceutically acceptable acid addition salt, to a racemic mixture, or to its corresponding enantiomer and/or optical isomer and/or stereoisomer thereof. Compounds of formula I are positive allosteric modulators (PAM) of the metabotropic glutamate receptor subtype 5 (mGluR5). They are useful for the treatment of schizophrenia or cognitive diseases.

Abstract: The invention relates to compounds of formula wherein R1, R2, R3, R4, X and Y are as defined herein and to pharmaceutically active acid addition salts thereof. The compounds can be used for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica or Down syndrome.

Abstract: The invention relates to compounds of formula wherein hetaryl I, hetaryl II, and R1 are as described herein. Compounds of formula I are modulators for amyloid beta and thus, they may be useful for the treatment or prevention of a disease associated with the deposition of ?-amyloid in the brain, in particular Alzheimer's disease.

Abstract: The present invention relates to compounds of formula I wherein R1, R2, R3, n, and m, are as defined in the specification and to pharmaceutically acceptable acid addition salts thereof. These compounds are good inhibitors of the glycine transporter 1 (GlyT-1) and are useful for the treatment of CNS disorders such as schizophrenia, cognitive impairment, and Alzheimer's disease.

Abstract: The invention relates to methods for the treatment of Alzheimer's disease, cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica and Down syndrome which comprise administering a therapeutically effective amount of a compound of formula I wherein R1, R2, R3, V, W, Y, and Z are as defined herein or a pharmaceutically active acid addition salt of such compounds. The invention also relates to a subgenus of such compounds and pharmaceutical compositions containing them, as well as methods for their manufacture.

Abstract: The invention relates to compounds of formula wherein R1, R2, R3, R4, and Ar are as defined in the specification and claims, or to pharmaceutically active acid addition salts of such compounds. Compounds of formula I are modulators for amyloid beta and may be useful for the treatment or prevention of a disease associated with the deposition of ?-amyloid in the brain, in particular Alzheimer's disease, and other diseases such as cerebral amyloid angiopathy, hereditary cerebral hemorrhage with amyloidosis, Dutch-type (HCHWA-D), multi-infarct dementia, dementia pugilistica and Down syndrome.

Abstract: The invention relates to compounds of formula wherein the substituents are described herein. The compounds may be used in the treatment of illnesses based on the glycine uptake inhibitor, such as psychoses, pain, neurodegenerative disfunction in memory and learning, schizophrenia, dementia and other diseases in which cognitive processes are impaired, such as attention deficit disorders or Alzheimer's disease.

Abstract: A compound of formula wherein the substituents are as described in the specification for the treatment of psychoses, pain, neurodegenerative disfunction in memory and learning, schizophrenia, dementia and other diseases in which cognitive processes are impaired, such as attention deficit disorders or Alzheimer's disease.