US 2010/0075994 A1 · SUBSTITUTED DIHYDRO AND TETRAHYDRO OXAZOLOPYRIMIDINONES, PREPARATION AND USE THEREOF

Abstract

The present invention relates to a series of substituted dihydro and tetrahydro oxazolopyrimidinones, specifically, to a series of 2-substituted-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-ones and 2-substituted-2,3,5,6-tetra-hydro-oxazolo[3,2-a]pyrimidin-7-ones of formula (I): Wherein p, n, X, Y, R1, R2, R3, R4, R5, R6, R7 and R8 are as defined herein. This invention also relates to methods of making these compounds including novel intermediates. The compounds of this invention are modulators of metabotropic glutamate receptors (mGluR), particularly, mGluR2 receptor. Therefore, the compounds of this invention are useful as pharmaceutical agents, especially in the treatment and/or prevention of a variety of central nervous system disorders (CNS), including but not limited to acute and chronic neurodegenerative conditions, psychoses, convulsions, anxiety, depression, migraine, pain, sleep disorders and emesis.

A compound of the formula I:

wherein:
is a single or a double bond;
p is 0 or 1;
n is an integer from 0 to 3;
X is oxygen, sulfur or NR21, wherein R21 is hydrogen or (C1-C4)alkyl;
Y is oxygen or sulfur;
R1 and R2 are the same or different and independently of each other selected from the group consisting of hydrogen, CF3, straight or branched chain (C1-C10)alkyl, mono- or di-fluoro(C1-C4)alkyl, mono- or di-fluoro(C1-C4)alkoxy(C0-C4)alkyl, mono- or di-fluoro(C1-C4)alkylsulfanyl(C0-C4)alkyl, mono- or di-fluoro(C1-C4)alkylsulfinyl(C0-C4)alkyl, mono- or di-fluoro(C1-C4)alkylsulfonyl(C0-C4)alkyl, (C1-C10)alkoxy(C0-C4)alkyl, (C1-C10)alkylsulfanyl(C0-C4)alkyl, (C1-C10)alkylsulfinyl(C0-C4)alkyl, (C1-C10)alkylsulfonyl(C0-C4)alkyl, (C1-C10)alkoxy mono- or di-fluoro(C1-C4)alkyl, (C1-C10)alkylsulfanyl mono- or di-fluoro(C1-C4)alkyl, (C1-C10)alkylsulfinyl mono- or di-fluoro(C1-C4)alkyl, (C1-C10)alkylsulfonyl mono- or di-fluoro(C1-C4)alkyl, (C6,C10)aryl(C0-C4)alkyl, (C6,C10)aryl mono- or difluoro(C1-C4)alkyl, (C6,C10)aryl mono- or difluoro(C2-C4)alkyloxy, (C6,C10)aryloxy(C0-C4)alkyl, (C6,C10)arylsulfanyl(C0-C4)alkyl, (C6,C10)arylsulfinyl(C0-C4)alkyl, (C6,C 10)arylsulfonyl(C0-C4)alkyl, (C3-C8)cycloalkyl(C0-C4)alkyl, mono- or difluoro(C3-C8)cycloalkyl(C0-C4)alkyl, (C3-C8)cycloalkoxy(C0-C4)alkyl, mono- or difluoro(C3-C8)cycloalkyloxy(C0-C4)alkyl, (C3-C8)cycloalkyl mono- or difluoro (C1-C4)alkyl, (C3-C8)cycloalkyl mono- or difluoro (C2-C4)alkyloxy, (C3-C8)cycloalkylsulfanyl(C0-C4)alkyl, (C3-C8)cycloalkylsulfinyl(C0-C4)alkyl, (C3-C8)cycloalkylsulfonyl(C0-C4)alkyl, hydroxy(C1-C4)alkyl, heteroaryl(C0-C4)alkyl, heteroaryl mono- or difluoro(C1-C4)alkyl, heteroaryloxy(C0-C4)alkyl, heteroaryloxy mono- or difluoro(C2-C4)alkyl, heteroarylsulfanyl(C0-C4)alkyl, heteroarylsulfinyl(C0-C4)alkyl, heteroarylsulfonyl(C0-C4)alkyl, saturated heterocyclic(C0-C4)alkyl, saturated heterocyclic mono- or di-fluoro(C1-C4)alkyl, saturated heterocyclyloxy(C0-C4)alkyl, saturated heterocyclyloxy mono- or di-fluoro(C2-C4)alkyl, saturated heterocyclylsulfanyl(C0-C4)alkyl, heterocyclylsulfinyl(C0-C4)alkyl, heterocyclylsulfonyl(C0-C4)alkyl, —CO2R22 or —CONR23R24 wherein R22, R23 and R24 are the same or different and independently of each other selected from hydrogen or (C1-C4)alkyl;
and
wherein R1 and R2 are optionally further substituted;
R3 and R4 are the same or different and independently of each other selected from the group consisting of hydrogen, (C1-C4)alkyl, (C3-C8)cycloalkyl and (C6,C10)aryl(C1-C4)alkyl;
or
R3 and R4 taken together with the carbon atom to which they are attached form a substituted or unsubstituted C5-C7 carbocyclic ring;
R5, R6 and R7 are the same or different and independently of each other selected from the group consisting of hydrogen, (C1-C4)alkyl and (C3-C8)cycloalkyl;
R8 is selected from the group consisting of substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted indanyl, substituted or unsubstituted tetralinyl, substituted or unsubstituted benzocycloheptanyl, substituted or unsubstituted hexahydrofluorenyl, substituted or unsubstituted (C3-C8)cycloalkyl, substituted or unsubstituted furanyl, substituted or unsubstituted benzofuranyl, substituted or unsubstituted thiophenyl, substituted or unsubstituted benzothiophenyl, substituted or unsubstituted indolyl, substituted or unsubstituted benzothiazolyl, substituted or unsubstituted thiazolyl, substituted or unsubstituted pyrrolyl, substituted or unsubstituted pyridyl, substituted or unsubstituted tetrahydroisoquinolinyl, substituted or unsubstituted tetrahydroquinolinyl, substituted or unsubstituted isoquinolinyl, substituted or unsubstituted quinolinyl, substituted or unsubstituted tetrahydrodibenzofuranyl and substituted or unsubstituted hexahydrodibenzofuranyl;
wherein said substituents are selected from the group consisting of CF3, OCF3, halogen, CN, SF5, straight or branched chain (C1-C20)alkyl, (C1-C4)alkylsulfonyl, substituted or unsubstituted (C3-C 10)cycloalkyl(CR9R10)m, substituted or unsubstituted (C6-C16)spirocycloalkyl, substituted or unsubstituted (C6 ,C10)aryl(CR9R10)m, substituted or unsubstituted heteroaryl(CR9R10)m, substituted or unsubstituted (C6,C10)aryl(C3-C8)cycloalkyl, substituted or unsubstituted (C8-C13)bicyclic, substituted or unsubstituted adamantyl, substituted or unsubstituted indanyl, substituted or unsubstituted tetralinyl, substituted or unsubstituted benzocycloheptyl, straight or branched chain (C1-C20)alkoxy, substituted or unsubstituted (C3-C 10)cycloalkoxy, substituted or unsubstituted (C6,C10)aryloxy, substituted or unsubstituted heteroaryloxy, substituted or unsubstituted piperidinyl(CR9R10)m, substituted or unsubstituted piperazinyl(CR9R10)m, substituted or unsubstituted (C4-C7)lactam, substituted or unsubstituted tetrahydropyranyl(CR9R10)m, substituted or unsubstituted tetrahydrofuranyl(CR9R10)m, substituted or unsubstituted 1,3-dioxanyl, substituted or unsubstituted 1,3-dioxolanyl, (C1-C4)alkoxyethoxy, substituted or unsubstituted (C3-C8)cycloalkyloxyethoxy, substituted or unsubstituted (C6,C10)aryloxyethoxy and substituted or unsubstituted heteroaryloxyethoxy;
wherein
m is an integer from 0 to 10;
R9 and R10 are the same or different and independently of each other chosen from hydrogen or (C1-C4)alkyl;
or
R9 and R10 taken together with the carbon atom to which they are attached form a substituted or unsubstituted C3-Cs carbocyclic ring;
and wherein said substituents are selected from the aforementioned substituents;
or a salt thereof or an enantiomer, stereoisomer or a tautomer thereof or a racemic mixture thereof;
and
and with the exception of the following compounds:
2-(2-methyl-phenoxymethyl)-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-one;
5-methyl-2-(2-methyl-phenoxymethyl)-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-one;
2-(phenoxymethyl)-2,3-dihydro-oxazolo[3,2-a]pyrimidin-7-one;
5-methyl-2-phenoxymethyl-2,3,5,6-tetrahydro-oxazolo[3,2-a]pyrimidin-7-one;
and
2-phenoxymethyl-2,3,5,6-tetrahydro-oxazolo[3,2-a]pyrimidin-7-one.

27 more elements

Substituted dihydro and tetrahydro oxazolopyrimidinones, preparation and use thereof

Life of this patent

Substituted dihydro and tetrahydro oxazolopyrimidinones, preparation and use thereof

Life of this patent

Abstract

Claims40