US20030134838A1 - Trisubstituted pyrimidines - Google Patents
Trisubstituted pyrimidines Download PDFInfo
- Publication number
- US20030134838A1 US20030134838A1 US10/272,160 US27216002A US2003134838A1 US 20030134838 A1 US20030134838 A1 US 20030134838A1 US 27216002 A US27216002 A US 27216002A US 2003134838 A1 US2003134838 A1 US 2003134838A1
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- United States
- Prior art keywords
- group
- alkyl
- denotes
- pyrimidine
- optionally substituted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- DPMBSCVGTBOWKJ-UHFFFAOYSA-N CN(C)C1=C([Re])C=NC(N([Rb])[RaH])=N1 Chemical compound CN(C)C1=C([Re])C=NC(N([Rb])[RaH])=N1 DPMBSCVGTBOWKJ-UHFFFAOYSA-N 0.000 description 5
- IZWLFVUJSRRPRA-UHFFFAOYSA-N CC1=C([Re])C=NC(N([Rb])[RaH])=N1 Chemical compound CC1=C([Re])C=NC(N([Rb])[RaH])=N1 IZWLFVUJSRRPRA-UHFFFAOYSA-N 0.000 description 2
- VZAOSCFAGSAXLB-UHFFFAOYSA-N CC1=NC(N(C)C)=C([Re])C=N1 Chemical compound CC1=NC(N(C)C)=C([Re])C=N1 VZAOSCFAGSAXLB-UHFFFAOYSA-N 0.000 description 2
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/48—Two nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/50—Three nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings
- C07D403/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
Definitions
- the present invention relates to trisubstituted pyrimidines of formula (I),
- a ⁇ amyloid- ⁇ -peptide
- APP amyloid precursor protein
- ⁇ -secretase In the non-amyloidogenic metabolism of APP, ⁇ -secretase cleaves within the A ⁇ region of the APP and thus leads to the secretion of the soluble N-terminal region of the protein ( ⁇ -APPs) and, after the ⁇ -secretase cutting has taken place, to the release of p3.
- ⁇ -APPs soluble N-terminal region of the protein
- amyloidogenic route leads to the formation of A ⁇ , two proteases generating the N-terminus ( ⁇ -secretase) and the C-terminus ( ⁇ -secretase), respectively, of A ⁇ .
- a ⁇ can be detected in human plasma and cerebrospinal fluid in vivo. In cell culture, too, secreted A ⁇ can be detected in the cell culture supernatant of various types of cells which express or overexpress APP or fragments thereof endogenously.
- the problem of the present invention is to prepare compounds which are capable of interfering (preferably in an inhibitory capacity) in the process of the formation of A ⁇ or its release from cells, or of reducing the activity of A ⁇ by inhibiting it.
- the present invention is based on the further objective of preparing compounds which can be used effectively for the prevention or treatment of Alzheimer's disease.
- R a denotes a hydrogen atom or an alkyl group
- R b denotes a phenyl group substituted by the groups R 1 to R 5 , while
- R 1 denotes a hydrogen, fluorine, chlorine, bromine or iodine atom
- a C 3-7 -cycloalkyl, C 4-7 -cycloalkoxy or (C 3-7 -cycloalkyl)alkyl group which may be substituted in the cycloalkyl moiety by one or two alkyl groups in each case,
- a C 2-5 -alkenyl, C 3-5 -alkenyloxy, C 2-5 -alkynyl or C 3-5 -alkynyloxy group wherein the vinyl and ethynyl moieties cannot be linked with an oxygen atom, an aryl, aryloxy, arylalkyl, arylalkoxy, alkylsulphenyl, alkylsulphinyl, alkylsulphonyl, alkylsulphonyloxy, arylsulphenyl, arylsulphinyl, arylsulphonyl, arylalkylsulphenyl, arylalkylsulphinyl or arylalkylsulphonyl group,
- an 6 or 7-membered alkyleneimino group optionally substituted by one or two alkyl groups, wherein a methylene group in the 4 position to the imino-nitrogen atom is replaced by the group W, where
- W denotes an oxygen or sulphur atom, a sulphinyl, sulphonyl, imino, N-alkyl-imino, N-formyl-imino, N-alkylcarbonyl-imino, N-cyano-imino, N-alkoxycarbonyl-imino or N-alkylsulphonyl-imino group,
- R 9 denotes a hydroxy, alkoxy, amino, alkylamino, dialkylamino, alkylsulphenyl, alkylsulphinyl, alkylsulphonyl, carboxy, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl or cyano group,
- a 6 or 7-membered alkyleneiminocarbonyl group optionally substituted by one or two alkyl groups, wherein a methylene group in the 4 position of the alkyleneimino moiety is replaced by the group W, where W is as hereinbefore defined,
- a 5- to 7-membered alkyleneimino group optionally substituted by one or two alkyl groups, wherein a methylene group adjacent to the nitrogen atom is replaced by a carbonyl group,
- a 6- or 7-membered alkyleneimino group optionally substituted by one or two alkyl groups, wherein a methylene group in the 4 position is replaced by the group W, where W is as hereinbefore defined,
- R 2 and R 3 in each case independently of one another denote hydrogen, fluorine, chlorine, bromine or iodine atoms, alkyl, alkoxy, fluoroalkyl, fluoroalkoxy or cyano groups or
- R 2 together with R 3 if they are bound to adjacent carbon atoms, also a methylenedioxy group optionally substituted by one or two alkyl groups, an n-C 3-6 -alkylene group optionally substituted by one or two alkyl groups, wherein a methylene group may be replaced by the group W′, where W′ has the meanings given above for W and additionally denotes a trifluoroacetylimino group, a 1,3-butadiene-1,4-diylene group optionally substituted by a fluorine, chlorine, bromine or iodine atom, by an alkyl, trifluoromethyl, hydroxy, alkoxy, trifluoromethoxy or cyano group, while the abovementioned 1,3-butadiene-1,4-diylene groups may additionally be substituted by a fluorine or chlorine atom, by an alkyl, trifluoromethyl or alkoxy group,
- R 4 and R 5 in each case independently of one another denote hydrogen, fluorine or chlorine atoms or
- R 4 together with R a if R 4 is in the o-position to the nitrogen atom substituted by R a , also denote an n-C 2-4 -alkylene group optionally substituted by one or two alkyl groups,
- R c denotes a C 1-6 -alkyl group optionally mono- or polysubstituted by R 9 , while R 9 is as hereinbefore defined,
- R d denotes a hydrogen atom or an alkyl group
- R c together with Rd and the nitrogen atom attached to them denote a 3- to 7-membered alkyleneimino group or a 6 or 7-membered alkyleneimino group, wherein a methylene group in the 4 position is replaced by the group W, where W is as hereinbefore defined, and
- R e denotes a nitro, amino, alkylamino, dialkylamino or azido group
- a 4- to 7-membered alkyleneimino group optionally substituted by one or two alkyl groups, wherein one or two methylene group adjacent to the nitrogen atoms may be replaced by a carbonyl group, while additionally in this alkyleneimino group a CH 2 group in the 4 position may be replaced by the group W where W is as hereinbefore defined,
- alkyleneiminocarbonylamino or N-alkyl-alkyleneiminocarbonylamino group optionally substituted in the alkyleneimino moiety by one or two alkyl groups, while the alkyleneimino moiety is 4 to 7-membered in each case,
- an alkyleneiminocarbonylamino or N-alkyl-alkyleneiminocarbonylamino group optionally substituted in the alkyleneimino moiety by one or two alkyl groups, while the alkyleneimino moiety is 6 or 7-membered in each case and a methylene group in the 4 position of the alkyleneimino moiety is replaced in each case by the group W, where W is as hereinbefore defined,
- alkyleneiminothiocarbonylamino or N-alkyl-alkyleneiminothiocarbonylamino group optionally substituted in the alkyleneimino moiety by one or two alkyl groups, while the alkyleneimino moiety is 4 to 7-membered in each case,
- an alkyleneiminothiocarbonylamino or N-alkyl-alkyleneiminothiocarbonylamino group optionally substituted in the alkyleneimino moiety by one or two alkyl groups, while the alkyleneimino moiety in each case is 6 or 7-membered and a methylene group in the 4 position of the alkyleneimino moiety is replaced in each case by the group W, where W is as hereinbefore defined,
- R 6 denotes a hydrogen atom or an alkyl group
- R 7 and R 8 in each case independently of one another denote hydrogen atoms or alkyl groups optionally substituted by R 9 , or
- R 6 and R 7 together denote an n-C 2-3 -alkylene group
- R 8 denotes a hydrogen atom or an alkyl group optionally substituted by R 9 , while R 9 is as hereinbefore defined,
- an imidazolidine-2,4-dion-1-yl or imidazolidine-2,4-dion-3-yl-group optionally substituted by 1 to 3 alkyl groups, while one of the alkyl groups may be substituted by R 9 ,
- a 1,3-dihydro-imidazol-2-on-1-yl group optionally substituted by 1 to 3 alkyl groups, while one of the alkyl groups may be substituted by R 9 ,
- a 2,4-dihydro-1,2,4-triazol-3-on-2-yl or 2,4-dihydro-1,2,4-triazol-3-on-4-yl-group optionally substituted by 1 or 2 alkyl groups, while one of the alkyl groups may be substituted by R 9 ,
- R 13 denotes a hydrogen atom, an alkyl or C 3-7 -cycloalkyl group
- R 14 and R 15 in each case independently of one another denote an alkyl group, or
- R 14 and R 15 together with the nitrogen atom between them denote a 4- to 7-membered alkyleneimino group optionally substituted by one or two alkyl groups or a 6- or 7-membered alkyleneimino group optionally substituted by one or two alkyl groups, wherein a methylene group in the 4 position is replaced by the group W, where W is as hereinbefore defined, and
- R 13 denotes a hydrogen atom, an alkyl or C 3-7 -cycloalkyl group
- R 16 denotes a hydrogen atom, an alkyl, C 3-7 -cycloalkyl, trifluoromethyl or trichloromethyl group,
- R 17 and R 18 which may be identical or different, in each case represent a hydrogen atom or an alkyl group or
- R 16 and R 18 together represent an n-C 3-5 -alkylene group optionally substituted by one or two alkyl groups and
- R 17 represents a hydrogen atom or an alkyl group
- R 17 and R 18 together represent an n-C 2-4 -alkylene group optionally substituted by one or two alkyl groups and
- R 16 denotes a hydrogen atom, an alkyl or C 3-7 -cycloalkyl group
- R 19 and R 20 which may be identical or different, denote alkyl or aryl groups, a alkyl or alkoxy group substituted by R 9 , wherein R 9 is as hereinbefore defined,
- a 6- or 7-membered alkyleneiminocarbonyl or alkyleneiminosulphonyl group optionally substituted by one or two alkyl groups, wherein a methylene group of the alkyleneimino moiety is replaced in the 4 position by the group W, where W is as hereinbefore defined,
- an alkoxy-C( ⁇ NH) or alkylsulphenyl-C( ⁇ NH)-group optionally substituted at the nitrogen atom by an alkyl group
- R 10 and R 11 together denote an n-C 2-4 -alkylene group optionally substituted by one or two alkyl groups,
- amidino group optionally substituted by one to three alkyl groups or
- an amidino group substituted by a hydroxy, alkoxy, cyano, alkoxycarbonyl or arylalkoxycarbonyl group which may additionally be substituted at the nitrogen atoms by one or two alkyl groups,
- aryl moieties mentioned in the definition of the abovementioned groups is meant a phenyl group which may in each case be monosubstituted by R 21 , mono-, di- or trisubstituted by R 22 or monosubstituted by R 21 and additionally mono- or disubstituted by R 22 , while the substituents may be identical or different, and
- R 21 denotes a cyano, carboxy, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkoxycarbonyl, alkylcarbonyl, alkylsulphenyl, alkylsulphinyl, alkylsulphonyl, alkylsulphonyloxy, perfluoroalkyl, perfluoroalkoxy, nitro, amino, alkylamino, dialkylamino, alkylcarbonylamino, phenylalkylcarbonylamino, phenylcarbonylamino, alkylsulphonylamino, phenylalkylsulphonylamino, phenylsulphonylamino, N-alkyl-alkylcarbonylamino, N-alkyl-phenylalkylcarbonylamino, N-alkyl-phenylalkylcarbonylamino, N-alkyl-phenylcarbonyla
- R 22 denotes an alkyl, hydroxy or alkoxy group, a fluorine, chlorine, bromine or iodine atom, while two groups R 22 if they are bound to adjacent carbon atoms, may also denote an alkylene group with 3 to 6 carbon atoms, a 1,3-butadiene-1,4-diylene group or a methylenedioxy group,
- heteroaryl moieties is meant a 5-membered heteroaromatic ring with an imino group, an oxygen or sulphur atom or a 5-membered heteroaromatic ring with an oxygen or sulphur atom and one to two nitrogen atoms or a 5-membered heteroaromatic ring with an imino group and one to three nitrogen atoms or a 6-membered heteroaromatic ring with one to three nitrogen atoms
- the abovementioned 5- and 6-membered heteroaromatic rings may be substituted by one to two alkyl groups or by a trifluoromethyl group
- alkyl, alkylene and alkoxy moieties in each case contain 1 to 4 carbon atoms.
- Preferred compounds of general formula (I) are those wherein
- R b denotes a phenyl group substituted by the groups R 1 to R 5 , while
- R 1 denotes a hydrogen, fluorine, chlorine, bromine or iodine atom
- a C 3-6 -cycloalkyl, C 5-6 -cycloalkoxy or (C 3-6 -cycloalkyl)alkyl group which may be substituted in the cycloalkyl moiety by one or two alkyl groups in each case,
- a C 2-5 -alkenyl, C 3-5 -alkenyloxy, C 2-5 -alkynyl or C 3-5 -alkynyloxy group wherein the vinyl and ethynyl moieties cannot be linked with an oxygen atom, an aryl, aryloxy, arylalkyl, arylalkoxy, alkylsulphenyl, alkylsulphinyl, alkylsulphonyl, alkylsulphonyloxy, arylsulphenyl, arylsulphinyl, arylsulphonyl, arylalkylsulphenyl, arylalkylsulphinyl or arylalkylsulphonyl group,
- an ethyl, ethoxy, ethylsulphenyl, ethylsulphinyl or ethylsulphonyl group substituted by 1 to 5 fluorine atoms, a nitro, amino, alkylamino, dialkylamino or azido group, a 5- to 6-membered alkyleneimino group optionally substituted by one or two alkyl groups,
- W denotes an oxygen or sulphur atom, a sulphinyl, sulphonyl, imino, N-alkyl-imino, N-formyl-imino, N-alkylcarbonyl-imino, N-cyan-imino, N-alkoxycarbonyl-imino or N-alkylsulphonyl-imino group,
- a formylamino, N-alkyl-formylamino, alkylcarbonylamino, N-alkyl-alkylcarbonylamino, alkylsulphonylamino or N-alkyl-alkylsulphonylamino group an alkylcarbonyl, carboxy, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl or cyano group,
- R 9 denotes a hydroxy, alkoxy, amino, alkylamino, dialkylamino, alkylsulphenyl, alkylsulphinyl, alkylsulphonyl, carboxy, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl or cyano group,
- a 6- or 7-membered alkyleneimino group optionally substituted by one or two alkyl groups, wherein a methylene group in the 4 position is replaced by the group W, where W is as hereinbefore defined,
- R 2 and R 3 in each case independently of one another denote hydrogen, fluorine, chlorine, bromine or iodine atoms, alkyl, alkoxy, trifluoromethyl, trifluoromethoxy, difluoromethyl, difluoromethoxy or cyano groups or
- R 4 and R 5 which may be identical or different, denote hydrogen, fluorine or chlorine atoms,
- R c denotes a C 1-6 -alkyl group, which may be substituted by one or more hydroxy, alkoxy, dialkylamino groups,
- R d denotes a hydrogen atom or a C 1-16 -alkyl group
- R e denotes a nitro, amino, alkylamino, dialkylamino or azido group
- a 5- to 7-membered alkyleneimino group optionally substituted by one or two alkyl groups, wherein one or two methylene groups adjacent to the nitrogen atoms may be replaced by a carbonyl group, while additionally in the alkyleneimino group a methylene group in the 4 position to the imino-nitrogen atom may be replaced by the group W where W is as hereinbefore defined,
- an alkyleneiminocarbonylamino or N-alkyl-alkyleneiminocarbonylamino group optionally substituted in the alkyleneimino moiety by one or two alkyl groups, while the alkyleneimino moiety is 6- or 7-membered in each case and a methylene group in the 4 position of the alkyleneimino moiety is in each case replaced by the group W, where W is as hereinbefore defined,
- alkyleneiminothiocarbonylamino or N-alkyl-alkyleneiminothiocarbonylamino group optionally substituted in the alkyleneimino moiety by one or two alkyl groups, while the alkyleneimino moiety is 4- to 7-membered in each case,
- an alkyleneiminothiocarbonylamino or N-alkyl-alkyleneiminothiocarbonylamino group optionally substituted in the alkyleneimino moiety by one or two alkyl groups, while the alkyleneimino moiety is 6- or 7-membered in each case and in each case a methylene group in the 4 position of the alkyleneimino moiety is replaced by the group W, where W is as hereinbefore defined,
- R 6 denotes a hydrogen atom or an alkyl group
- R 7 and R 8 which may be identical or different, denote hydrogen atoms or alkyl groups optionally substituted by R 9 or
- R 6 and R 7 together denote an n-C 2-3 -alkylene group
- R 8 denotes a hydrogen atom or an alkyl group optionally substituted by R 9 , while R 9 is as hereinbefore defined, and
- X denotes O or S
- imidazolidine-2,4-dion-1-yl or imidazolidine-2,4-dion-3-yl-group optionally substituted by an alkyl group
- R 13 denotes a hydrogen atom, an alkyl or C 3-7 -cycloalkyl group
- R 14 and R 15 which may be identical or different, in each case denote an alkyl group, or
- R 14 and R 15 together with the nitrogen atom between them denote a 4- to 7-membered alkyleneimino group optionally substituted by one or two alkyl groups or a 6- or 7-membered alkyleneimino group optionally substituted by one or two alkyl groups, wherein a methylene group in the 4 position is replaced by the group W, where W is as hereinbefore defined, and
- R 13 denotes a hydrogen atom, an alkyl or C 3-7 -cycloalkyl group
- R 16 denotes a hydrogen atom, an alkyl, C 3-7 -cycloalkyl, trifluoromethyl or trichloromethyl group,
- R 17 and R 18 in each case independently of one another denote a hydrogen atom or an alkyl group, or
- R 16 and R 18 together denote an n-C 3-5 -alkylene group optionally substituted by one or two alkyl groups, and
- R 17 denotes a hydrogen atom or an alkyl group
- R 17 and R 18 together denote an n-C 2-4 -alkylene group optionally substituted by one or two alkyl groups, and
- R 16 denotes a hydrogen atom, an alkyl or C 3-7 -cycloalkyl group
- R 19 and R 20 which may be identical or different, denote alkyl groups
- a 6 or 7-membered alkyleneiminocarbonyl or alkyleneiminosulphonyl group optionally substituted by one or two alkyl groups, wherein a methylene group of the alkyleneimino moiety in the 4 position is replaced by the group W, where W is as hereinbefore defined,
- R 10 and R 11 together denote an n-C 2-4 -alkylene group optionally substituted by one or two alkyl groups,
- amidino group optionally substituted by one to three alkyl groups or
- an amidino group substituted by a hydroxy, alkoxy, cyano, alkoxycarbonyl or arylalkoxycarbonyl group which may additionally be substituted at the nitrogen atoms by one or two alkyl groups,
- aryl moieties mentioned in the definition of the abovementioned groups is meant a phenyl group which may in each case be monosubstituted by R 21 , mono-, di- or trisubstituted by R 22 or monosubstituted by R 21 and additionally mono- or disubstituted by R 22 , while the substituents may be identical or different, and
- R 21 denotes a cyano, carboxy, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, alkoxycarbonyl, alkylcarbonyl, alkylsulphenyl, alkylsulphinyl, alkylsulphonyl, alkylsulphonyloxy, perfluoroalkyl, perfluoroalkoxy, nitro, amino, alkylamino, dialkylamino, alkylcarbonylamino, phenylalkylcarbonylamino, phenylcarbonylamino, alkylsulphonylamino, phenylalkylsulphonylamino, phenylsulphonylamino, N-alkyl-alkylcarbonylamino, N-alkyl-phenylalkylcarbonylamino, N-alkyl-phenylalkylcarbonylamino, N-alkyl-phenylcarbonyla
- R 22 denotes an alkyl, hydroxy or alkoxy group, a fluorine, chlorine, bromine or iodine atom, while two groups R 22 , if they are bound to adjacent carbon atoms, may also denote an alkylene group with 3 to 6 carbon atoms, a 1,3-butadiene-1,4-diylene group or a methylenedioxy group,
- heteroaryl moieties is meant a 5-membered heteroaromatic ring with an imino group, an oxygen or sulphur atom or a 5-membered heteroaromatic ring with an oxygen or sulphur atom and one to two nitrogen atoms or a 5-membered heteroaromatic ring with an imino group and one to three nitrogen atoms or a 6-membered heteroaromatic ring with one to three nitrogen atoms
- the abovementioned 5- and 6-membered heteroaromatic rings may be substituted by one to two alkyl groups or by a trifluoromethyl group
- alkyl, alkylene and alkoxy moieties in each case contain 1 to 4 carbon atoms.
- R a denotes a hydrogen atom or a methyl group
- R b denotes a phenyl group substituted by the groups R 1 to R 5 , while
- R 1 denotes a hydrogen, fluorine, chlorine, bromine or iodine atom
- alkylcarbonylamino N-alkyl-alkylcarbonylamino, alkylsulphonylamino or N-alkyl-alkylsulphonylamino group
- R 9 denotes a hydroxy, C 1-2 -alkoxy, amino, C 1-2 -alkylamino, di-(C 1-2 -alkyl)-amino, carboxy, C 1-2 -alkoxycarbonyl, aminocarbonyl, C 1-2 -alkylaminocarbonyl, di-(C 1-2 -alkyl)-aminocarbonyl or cyano group,
- alkylcarbonylamino N-methyl-alkylcarbonylamino, alkylsulphonylamino, N-methyl-alkylsulphonylamino, alkoxycarbonylamino or N-methyl-alkoxycarbonylamino group,
- R 2 denotes a hydrogen, fluorine, chlorine or bromine atom, a methyl, methoxy, trifluoromethyl or cyano group
- R 3 denotes a hydrogen, fluorine or chlorine atom, or
- R 2 together with R 3 also denote a methylenedioxy group, an n-C 3-5 -alkylene group, wherein a methylene group may be replaced by an imino, N-methyl-imino or N-trifluoroacetyl-imino group, or a 1,3-butadiene-1,4-diylene group optionally substituted by a fluorine or chlorine atom, by a methyl, methoxy or trifluoromethyl group,
- R 4 and R 5 which may be identical or different, denote hydrogen or fluorine atoms
- R c denotes a methyl, ethyl or propyl group which may be substituted by a hydroxy, alkoxy, dialkylamino group
- R d denotes a hydrogen atom or a methyl group
- R e denotes a nitro, amino, alkylamino or dialkylamino group
- a pyrrolidinothiocarbonylamino, piperidinothiocarbonylamino, morpholinothiocarbonylamino, piperazinothiocarbonylamino or 4-alkylpiperazinothiocarbonylamino group which may be substituted in each case at the thiocarbonylamino moiety by an alkyl group,
- R 6 denotes a hydrogen atom or an alkyl group
- R 7 and R 8 in each case independently of one another denote hydrogen atoms or alkyl groups optionally substituted by R 9 , or
- R 6 and R 7 together denote an n-C 2-3 -alkyl group
- R 8 denotes a hydrogen atom or an alkyl group optionally substituted by R 9 , while R 9 is as hereinbefore defined,
- an imidazolidine-2,4-dion-1-yl or imidazolidine-2,4-dion-3-yl-group optionally substituted by an alkyl group
- R 13 denotes a hydrogen atom or an alkyl group
- R 14 and R 15 in each case independently of one another denote an alkyl group or
- R 14 and R 15 together with the nitrogen atom between them denote a pyrrolidino, piperidino, morpholino, piperazino or 4-alkyl-piperazino group,
- R 16 denotes an alkyl or trichloromethyl group
- R 17 denotes a hydrogen atom or an alkyl group
- R 18 denotes a hydrogen atom
- a dialkylphosphinylamino group optionally substituted at the nitrogen atom by an alkyl group, wherein the alkyl substituents may be identical or different,
- R 10 and R 11 together denote an n-C 2-3 -alkylene group optionally substituted by one or two methyl groups,
- an amidino group substituted by a hydroxy, alkoxy, cyano, alkoxycarbonyl or phenylalkoxycarbonyl group which may additionally be substituted at the nitrogen atoms by one or two methyl groups,
- phenyl groups mentioned in the definition of the abovementioned groups may be substituted in each case by a fluorine, chlorine or bromine atom or by a methyl, methoxy or trifluoromethyl group,
- alkyl, alkylene and alkoxy moieties each contain 1 to 4 carbon atoms
- R a denotes a hydrogen atom or a methyl group
- R b denotes a phenyl group substituted by the groups R 1 to R 5 , while
- R 1 denotes a hydrogen, fluorine, chlorine, bromine or iodine atom
- a C 1-2 -alkyl group which is substituted by a methoxy, amino, C 1-2 -alkylamino, di-(C 1-2 -alkyl)-amino, carboxy, C 1-2 -alkoxycarbonyl, pyrrolidino, piperidino, morpholino, piperazino, 4-methyl-piperazino, acetylamino, methyl-sulphonylamino or C 1-4 -alkoxycarbonylamino group,
- R 2 denotes a hydrogen, fluorine or chlorine atom or a methyl group
- R 3 denotes a hydrogen, fluorine or chlorine atom or
- R 2 together with R 3 also denote an n-C 3-4 -alkylene group, an —CH 2 CH 2 NHCH 2 CH 2 -group optionally substituted at the nitrogen atom by a methyl or trifluoroacetyl group, or a 1,3-butadiene-1,4-diylene group,
- R 4 and R 5 in each case independently of one another denote hydrogen or fluorine atoms
- R c denotes a methyl, ethyl or propyl group, which may be terminally substituted by a hydroxy, methoxy or dimethylamino group,
- R d denotes a hydrogen atom or a methyl group
- R e denotes a nitro or amino group
- a pyrrolidinocarbonylamino, piperidinocarbonylamino, homopiperidinocarbonylamino, morpholinocarbonylamino, piperazinocarbonylamino, 4-methylpiperazinocarbonylamino or 4-acetylpiperazinocarbonylamino group which may be substituted by a methyl group at the carbonylamino moiety in each case,
- R 6 denotes a hydrogen atom or a methyl group
- R 7 and R 8 in each case independently of one another represent hydrogen atoms or C 1-3 -alkyl groups, while the alkyl groups may be terminally substituted by a hydroxy, methoxy, dimethylamino or C 1-2 -alkoxycarbonyl group, or
- R 6 and R 7 together denote a n-C 2-3 -alkylene group
- R 8 denotes a hydrogen atom or a methyl group
- R a and R d each independently of one another represent a hydrogen atom or a methyl group
- R b denotes a phenyl group substituted by one or two fluorine or chlorine atoms
- R c a methyl, ethyl or propyl group, which may be terminally substituted by a dimethylamino group
- R e denotes a nitro, acetylamino, trifluoroacetylamino, methylsulphonamino or amino group, or
- R 6 denotes a hydrogen atom or an alkyl group
- R 7 and R 8 which may be identical or different, denotes hydrogen atoms or alkyl groups optionally substituted by hydroxy, methoxy or dimethylamino, or
- R 6 and R 7 together denote an n-C 2-3 -alkylene group
- R 8 denotes a hydrogen atom or an alkyl group optionally substituted by hydroxy, methoxy or dimethylamino, or
- R 7 and R 8 taken together denote a C 4-8 -alkylenediyl group, while one or two non-adjacent CH 2 groups may be replaced by —O, —S or —NR 23 —, wherein R 23 denotes a hydrogen atom, a C 1-3 -alkyl group or C 1-3 -alkanoyl group, and
- X denotes O or S
- the invention relates to the compounds in question, optionally in the form of the individual optical isomers, mixtures of the individual enantiomers or racemates, in the form of the tautomers and in the form of the free bases or the corresponding acid addition salts with pharmacologically acceptable acids—such as for example acid addition salts with hydrohalic acids—for example hydrochloric or hydrobromic acid—or organic acids—such as for example oxalic, fumaric, diglycolic or methanesulphonic acid.
- pharmacologically acceptable acids such as for example acid addition salts with hydrohalic acids—for example hydrochloric or hydrobromic acid—or organic acids—such as for example oxalic, fumaric, diglycolic or methanesulphonic acid.
- alkyl groups denotes branched and unbranched alkyl groups with 1 to 4 carbon atoms, unless otherwise specified. Examples include: methyl, ethyl, propyl and butyl. Unless otherwise stated, the above terms propyl and butyl also include all the possible isomeric forms. Accordingly, the term propyl also includes the two isomeric groups n-propyl and iso-propyl and the term butyl includes n-butyl, iso-butyl, sec. butyl and tert.-butyl. In some cases common abbreviations are also used to denote the abovementioned alkyl groups, such as Me for methyl, Et for ethyl etc.
- alkylene groups denotes branched and unbranched alkylene bridges with 1 to 4 carbon atoms. Examples include: methylene, ethylene, propylene and butylene. Unless otherwise stated, the terms propylene and butylene used above also include all the possible isomeric forms. Accordingly, the term propylene also includes the two isomeric bridges n-propylene and dimethylmethylene and the term butylene includes the isomeric bridges n-butylene, 1-methylpropylene, 2-methylpropylene, 1,1-dimethylethylene and 1,2-dimethylethylene.
- alkenyl groups denotes branched and unbranched alkenyl groups with 2 to 4 carbon atoms, provided that they have at least one double bond, such as, for example, vinyl (provided that no unstable enamines or enolethers are formed), propenyl, iso-propenyl and butenyl.
- halogen generally denotes fluorine, chlorine, bromine or iodine. Unless otherwise specified, chlorine is preferred within the scope of the present invention.
- ⁇ O denotes an oxygen atom linked via a double bond.
- the present invention relates to the use of the compounds of formula (I) defined above as pharmaceutical compositions.
- the present invention relates to the use of the compounds of formula (I) for preparing a pharmaceutical composition for the prevention and/or treatment of diseases in which a therapeutic benefit can be achieved by interfering (preferably in an inhibitory capacity) in the process of the formation of A ⁇ or its release from cells. It is preferred according to the invention to use compounds of general formula (I) as specified above in order to prepare a pharmaceutical composition for the prevention and/or treatment of Alzheimer's disease.
- the present invention thus further relates to pharmaceutical compositions containing at least one compound of the above formula I, the tautomers, the stereoisomers or the physiologically acceptable salts thereof, the use thereof for the treatment of diseases in which the proliferation of cells, particularly endothelial cells, is involved, and processes for the preparation thereof.
- One approach to synthesising the compounds of general formula (I) according to the invention may involve the use of various methods, optionally based on or using conventional chemical methods of synthesis as described in more detail hereinafter.
- R c to R e are defined as in claims 1 to 8 and
- Z 1 denotes a leaving group, with an amine of formula
- R a and R b are defined as in claims 1 to 8.
- reaction is expediently carried out in a solvent such as ethanol, isopropanol, butanol, tetrahydrofuran, dioxane, toluene, chlorobenzene, dimethylformamide, dimethylsulphoxide, ethyleneglycolmonomethylether, ethyleneglycoldiethylether or sulpholane, optionally in the presence of an inorganic base, e.g. sodium carbonate or potassium hydroxide, or a tertiary organic base, e.g.
- reaction may, however, also be carried out without a solvent or in an excess of the compound of general formula III used.
- R a , R b and R e are defined as in claims 1 to 8, and
- Z 2 denotes a leaving group, with an amine of formula
- R c and R d are defined as in claims 1 to 8.
- reaction is expediently carried out in a solvent such as ethanol, isopropanol, butanol, tetrahydrofuran, dioxane, toluene, chlorobenzene, dimethylformamide, dimethylsulphoxide, ethyleneglycolmonomethylether, ethyleneglycoldiethylether or sulpholane, optionally in the presence of an inorganic base, e.g. sodium carbonate or potassium hydroxide, or a tertiary organic base, e.g.
- reaction may however also be carried out without a solvent or in an excess of the compound of general formula V used.
- the reduction is conveniently carried out hydrogenolytically, e.g. with hydrogen in the presence of a catalyst such as platinum, palladium/charcoal or Raney nickel in a suitable solvent such as methanol, ethanol, ethyl acetate, tetrahydrofuran, dioxane, dimethylformamide or glacial acetic acid, optionally with the addition of an acid such as hydrochloric acid and at a hydrogen pressure of 1 to 7 bar, preferably however 1 to 5 bar, with metals such as iron, tin or zinc in the presence of an acid such as acetic acid or hydrochloric acid, with salts such as iron(II)sulphate, tin (II)chloride, sodium sulphide, sodium hydrogen sulphite or sodium dithionite, or with hydrazine in the presence of Raney nickel at temperatures between 0 and 100° C., preferably however at temperatures between 20 and 60° C.
- a catalyst such as platinum, palladium/charcoal
- a compound of formula I thus obtained which contains an amino, alkylamino or imino group is converted by alkylation or reductive alkylation into a corresponding alkyl compound of formula I; and/or
- a compound of formula I thus obtained is converted into the salts thereof, particularly for pharmaceutical use into the physiologically acceptable salts thereof with an inorganic or organic acid or base.
- the subsequent acylation or sulphonylation is conveniently carried out with a corresponding halide, anhydride or isocyanate in a solvent such as methylene chloride, chloroform, carbon tetrachloride, ether, tetrahydrofuran, dioxane, benzene, toluene, acetonitrile or sulpholane, optionally in the presence of an inorganic or organic base at temperatures between ⁇ 20 and 200° C., preferably however at temperatures between ⁇ 10 and 160° C.
- it may also be carried out with the free acid, optionally in the presence of an acid-activating agent or a dehydrating agent, e.g.
- the subsequent esterification is optionally carried out in a solvent or mixture of solvents such as methylene chloride, dimethylformamide, benzene, toluene, chlorobenzene, tetrahydrofuran, benzene/tetrahydrofuran or dioxane or, particularly advantageously, in a corresponding alcohol, optionally in the presence of an acid such as hydrochloric acid or in the presence of a dehydrating agent, e.g.
- the subsequent alkylation is optionally carried out in a solvent or mixture of solvents such as methylene chloride, dimethylformamide, benzene, toluene, chlorobenzene, tetrahydrofuran, benzene/tetrahydrofuran, dioxane, dimethylsulphoxide or sulpholane with an alkylating agent such as a corresponding halide or sulphonic acid ester, e.g.
- methyl iodide ethyl bromide, dimethylsulphate or benzyl chloride
- a tertiary organic base optionally in the presence of a tertiary organic base or in the presence of an inorganic base conveniently at temperatures between 0 and 150° C., preferably at temperatures between 0 and 100° C.
- the subsequent reductive alkylation is carried out with a corresponding carbonyl compound such as formaldehyde, acetaldehyde, propionaldehyde, acetone or butyraldehyde in the presence of a complex metal hydride such as sodium borohydride, lithium borohydride or sodium cyanoborohydride, conveniently at a pH value of 6-7 and at ambient temperature or in the presence of a hydrogenation catalyst, e.g. with hydrogen in the presence of palladium/charcoal, at a hydrogen pressure of 1 to 5 bar.
- the methylation is however preferably carried out in the presence of formic acid as reducing agent at elevated temperatures, e.g. at temperatures between 60 and 120° C.
- the subsequent amidation is carried out by reacting a corresponding reactive carboxylic acid derivative with a corresponding amine, optionally in a solvent or mixture of solvents such as methylene chloride, dimethylformamide, benzene, toluene, chlorobenzene, tetrahydrofuran, glacial acetic acid, benzene/tetrahydrofuran or dioxane, while the amine used may simultaneously act as solvent, optionally in the presence of a tertiary organic base or in the presence of an inorganic base or with a corresponding carboxylic acid in the presence of a dehydrating agent, e.g.
- the subsequent oxidation is preferably carried out in a solvent or mixture of solvents, e.g. in water, water/pyridine, acetone, methylene chloride, acetic acid, acetic acid/acetic anhydride, dilute sulphuric acid or trifluoroacetic acid, conveniently at temperatures between ⁇ 80 and 100° C. depending on the oxidising agent used.
- a solvent or mixture of solvents e.g. in water, water/pyridine, acetone, methylene chloride, acetic acid, acetic acid/acetic anhydride, dilute sulphuric acid or trifluoroacetic acid, conveniently at temperatures between ⁇ 80 and 100° C. depending on the oxidising agent used.
- the oxidation is conveniently carried out with one equivalent of the oxidising agent used, e.g. with hydrogen peroxide in glacial acetic acid, trifluoroacetic acid or formic acid at 0 to 20° C. or in acetone at 0 to 60° C., with a peracid such as performic acid in glacial acetic acid or trifluoroacetic acid at 0 to 50° C.
- the oxidising agent e.g. with hydrogen peroxide in glacial acetic acid, trifluoroacetic acid or formic acid at 0 to 20° C. or in acetone at 0 to 60° C.
- a peracid such as performic acid in glacial acetic acid or trifluoroacetic acid at 0 to 50° C.
- oxidation is conveniently carried out, starting from a corresponding sulphinyl compound, with one or more equivalents of the oxidising agent used or, starting from a corresponding sulphenyl compound, conveniently with two or more equivalents of the oxidising agent used, e.g. with hydrogen peroxide in glacial acetic acid/acetic anhydride, trifluoroacetic acid or in formic acid at 20 to 100° C.
- a peracid such as performic acid or m-chloroperbenzoic acid in glacial acetic acid, trifluoroacetic acid, methylene chloride or chloroform at temperatures between 0 and 60° C., with nitric acid in glacial acetic acid at 0 to 20° C., with chromic acid, sodium periodate or potassium permanganate in acetic acid, water/sulphuric acid or in acetone at 0 to 20° C.
- a peracid such as performic acid or m-chloroperbenzoic acid in glacial acetic acid, trifluoroacetic acid, methylene chloride or chloroform at temperatures between 0 and 60° C.
- nitric acid in glacial acetic acid at 0 to 20° C.
- chromic acid sodium periodate or potassium permanganate in acetic acid, water/sulphuric acid or in acetone at 0 to 20° C.
- a mixture of a corresponding sulphinyl and sulphonyl compound of general formula I optionally obtained in this way may subsequently, if desired, be separated by known methods, e.g. by chromatography.
- the reaction may also be carried out with a different salt or derivative of hydrohalic acid, preferably with aluminium azide or tributyl tin azide, in which case the tetrazole compound optionally obtained in this way is liberated from the salt contained in the reaction mixture by acidification with a dilute acid such as 2N hydrochloric acid or 2N sulphuric acid.
- a dilute acid such as 2N hydrochloric acid or 2N sulphuric acid.
- any reactive groups present such as hydroxy, carboxy, amino, alkylamino or imino groups may be protected during the reaction by conventional protecting groups which are cleaved again after the reaction.
- a protecting group for a hydroxy group may be a trimethylsilyl, acetyl, benzoyl, methyl, ethyl, tert.butyl, trityl, benzyl or tetrahydropyranyl group,
- a protecting group for a carboxyl group may be a trimethylsilyl, methyl, ethyl, tert.butyl, benzyl or tetrahydropyranyl group and
- protecting groups for an amino, alkylamino or imino group may be a formyl, acetyl, trifluoroacetyl, ethoxycarbonyl, tert.butoxycarbonyl, benzyloxycarbonyl, benzyl, methoxybenzyl or 2,4-dimethoxybenzyl group and additionally, for the amino group, a phthalyl group.
- Any protecting group used is optionally subsequently cleaved for example by hydrolysis in an aqueous solvent, e.g. in water, isopropanol/water, acetic acid/water, tetrahydrofuran/water or dioxane/water, in the presence of an acid such as trifluoroacetic acid, hydrochloric acid or sulphuric acid or in the presence of an alkali metal base such as sodium hydroxide or potassium hydroxide or aprotically, e.g. in the presence of iodotrimethylsilane, at temperatures between 0 and 120° C., preferably at temperatures between 10 and 100° C.
- an aqueous solvent e.g. in water, isopropanol/water, acetic acid/water, tetrahydrofuran/water or dioxane/water, in the presence of an acid such as trifluoroacetic acid, hydrochloric acid or sulphuric acid or in the presence of an
- a benzyl, methoxybenzyl or benzyloxycarbonyl group is cleaved for example hydrogenolytically, e.g. with hydrogen in the presence of a catalyst such as palladium/charcoal in a suitable solvent such as methanol, ethanol, ethyl acetate or glacial acetic acid, optionally with the addition of an acid such as hydrochloric acid at temperatures between 0 and 100° C., but preferably at temperatures between 20 and 60° C., and at a hydrogen pressure of 1 to 7 bar, but preferably 3 to 5 bar.
- a 2,4-dimethoxybenzyl group is preferably cleaved in trifluoroacetic acid in the presence of anisole.
- a tert.butyl or tert.butyloxycarbonyl group is preferably cleaved by treating with an acid such as trifluoroacetic acid or hydrochloric acid or by treating with iodotrimethylsilane, optionally using a solvent such as methylene chloride, dioxane, methanol or diethyl ether.
- a trifluoroacetyl group is preferably cleaved by treating with an acid such as hydrochloric acid, optionally in the presence of a solvent such as acetic acid at temperatures between 50 and 120° C. or by treating with sodium hydroxide solution, optionally in the presence of a solvent such as tetrahydrofuran at temperatures between 0 and 50° C.
- a phthalyl group is preferably cleaved in the presence of hydrazine or a primary amine such as methylamine, ethylamine or n-butylamine in a solvent such as methanol, ethanol, isopropanol, toluene/water or dioxane at temperatures between 20 and 50° C.
- the compounds of general formula I obtained may be resolved into their enantiomers and/or diastereomers, as mentioned hereinbefore.
- cis/trans mixtures may be resolved into their cis and trans isomers, and compounds with at least one optically active carbon atom may be separated into their enantiomers.
- the cis/trans mixtures may be resolved by chromatography into the cis and trans isomers thereof, the compounds of general formula I obtained which occur as racemates may be separated by methods known per se (cf. Allinger N. L. and Eliel E. L. in “Topics in Stereochemistry”, Vol. 6, Wiley Interscience, 1971) into their optical antipodes and compounds of general formula I with at least 2 asymmetric carbon atoms may be resolved into their diastereomers on the basis of their physical-chemical differences using methods known per se, e.g. by chromatography and/or fractional crystallisation, and, if these compounds are obtained in racemic form, they may subsequently be resolved into the enantiomers as mentioned above.
- the enantiomers are preferably separated by column separation on chiral phases or by recrystallisation from an optically active solvent or by reacting with an optically active substance which forms salts or derivatives such as e.g. esters or amides with the racemic compound, particularly acids and the activated derivatives or alcohols thereof, and separating the diastereomeric mixture of salts or derivatives thus obtained, e.g. on the basis of their differences in solubility, whilst the free antipodes may be released from the pure diastereomeric salts or derivatives by the action of suitable agents.
- Optically active acids in common use are e.g.
- An optically active alcohol may be, for example, (+) or ( ⁇ )-menthol and an optically active acyl group in amides may be, for example, a (+)-or ( ⁇ )-menthyloxycarbonyl.
- the compounds of formula I obtained may be converted into the salts thereof, particularly for pharmaceutical use into the physiologically acceptable salts with inorganic or organic acids.
- Acids which may be used for this purpose include for example hydrochloric acid, hydrobromic acid, sulphuric acid, phosphoric acid, fumaric acid, succinic acid, lactic acid, citric acid, tartaric acid or maleic acid.
- the new compounds of formula I thus obtained contain an acidic group such as a carboxy group, they may subsequently, if desired, be converted into the salts thereof with inorganic or organic bases, particularly for pharmaceutical use into the physiologically acceptable salts thereof.
- Suitable bases for this purpose include for example sodium hydroxide, potassium hydroxide, arginine, cyclohexylamine, ethanolamine, diethanolamine and triethanolamine.
- the compounds of formula I according to the invention and the physiologically acceptable salts thereof have valuable pharmacological properties, particularly the property of inhibiting the process of the formation of A ⁇ in cells or its release from cells. This property was investigated according to the test described below.
- H4 neuroglioma cells (Accession number HTB 148 at the “American Type Culture Collection”, Manassas, Va., USA) were transfected under standard conditions with the reporter construct pFRLuc (Stratagene) which carries the gene for luciferase. By transient transfection experiments with pcDNA3-Gal4 which codes for the soluble Gal4, an individual clone having the highest luciferase activity was selected.
- a ⁇ -KKK/Gal4 construct a sequence containing the N-terminal signal sequence of APP and the first 55 amino acids of A ⁇ (Shoji et al, 1992) was linked to the Gal4 coding sequence (Laughan, A and Gesteland, R Molec. Cell Biol., 1984, 4: 260-267) by genetic engineering and cloned into the expression vector pcDNA3neo (Invitrogen).
- This construct was called pcDNA3-A ⁇ KKK/Gal4.
- the last nucleotides of the Gal4 were altered by genetic engineering so that they coded for the amino acids KKLI.
- This construct was named A ⁇ -KKK-ER.
- the cell clone obtained as described above was used for the second stable transfection with pcDNA3-A ⁇ -KKK/Gal4 or pcDNA3-A ⁇ -KKK-ER and the selection with neomycin was carried out under standard conditions (Sambrook and Maniatis, 1989). Individual neomycin-resistant cell clones were investigated for their expression of luciferase. The clones with the highest expression were used for the substance analyses. All the transfections were carried out using the Fugene transfection system supplied by Boehringer Mannheim, in accordance with the manufacturer's instructions.
- the doubly stabile HTS cell line is seeded onto a 96/384 microtitre plate.
- the cells are confluent, they are incubated with the particular test substance for a specified length of time. After incubation the cell medium is removed and the luciferase enzyme activity is determined precisely as instructed by the manufacturer of the test kit used (SteadyGlo, Promega).
- the substrate (A ⁇ -KKK/Gal4) is cleaved proteolytically, while the transactivator Gal4 is able to become detached from the membrane and enter the cell nucleus.
- Gal4 binds to the Gal4-DNA binding domain of the reporter construct and thus activates the expression of the luciferase. If a specific -secretase inhibitor is present the substrate cannot be cleaved and Gal4 remains bound to the substrate on the cell membrane, leading to a reduction amounting to total inhibition of the luciferase activity.
- Cells are seeded on 96/384 well plates in DMEM complete medium (10%FCS, 1% glutamine, 1% penicillin/streptomycin) in a dilution of 1:5. The cells are incubated for 24 to 48 h (depending on the cell clone and the dilution used) at 37° C., 5% CO 2 and allowed to grow until 80-90% confluence is achieved. Then the test substance is added and the preparation is incubated overnight (8-16 h) at 37° C. and 5% CO 2 . The 96/384 well plates are equilibrated to ambient temperature (RT). The “Steady-Glo” Luciferase Assay System Kit (Promega catalogue no.
- the Luciferase Assay Reagent is thawed and equilibrated to ambient temperature or freshly prepared (Luciferase Assay Substrate dissolved in Luciferase Assay Buffer). The medium is suction filtered to remove the cells. 100 ⁇ l (based on 96 well plates) of fresh complete medium are added per well. 100 ⁇ l (based on 96 well plates) of Luciferase Assay Reagent are added and the preparation is incubated for 5 min at RT. Then the luminescence is measured. For 384 well plates the quantities pipetted are reduced accordingly.
- the measurements are compared with the control and then the IC50 is determined from a number of measurements.
- IC50 values obtained for the compounds according to the invention are shown in Table 1.
- TABLE 1 Example IC50 [mM] 1 (1) 800 2 (1) 1000 3 (3) 60 3 (4) 60 3 (26) 600 3 (30) 200 3 (33) 300 3 (36) 250 3 (40) 350 3 (54) 900 3 (55) 900 3 (59) 150 3 (66) 800 4 (9) 1000 8 1100 8 (2) 1000 11 100 11 (2) 100 11 (3) 4 11 (4) 60 11 (5) 100 11 (6) 700 11 (7) 1000 11 (8) 200 11 (10) 800 11 (11) 700 11 (12) 1000
- the compounds according to the invention may be administered orally, transdermally, intrathecally, by inhalation or parenterally and occur as active ingredients in conventional preparations, for example in compositions which consist essentially of an inert pharmaceutical carrier and an effective dose of the active substance, such as for example tablets, coated tablets, capsules, lozenges, powders, solutions, suspensions, emulsions, syrups, suppositories, transdermal systems etc.
- An effective dose of the compounds according to the invention is between 1 and 5000, preferably between 10 and 1000, most preferably between 10-100 mg/dose for oral administration, and between 0.001 and 100, preferably between 0.1 and 10 mg/dose for intravenous or intramuscular administration.
- solutions containing 0.01 to 1.0, preferably 0.1 to 0.5% active substance are suitable.
- the use of powders is preferred.
- the compounds according to the invention as a solution for infusion, preferably in a physiological saline or nutrient saline solution.
- the compounds according to the invention may be used on their own or in conjunction with other active substances according to the invention, optionally also in conjunction with other pharmacologically active substances.
- suitable preparations include for example tablets, capsules, suppositories, solutions, elixirs, emulsions or dispersible powders.
- Suitable tablets may be obtained, for example, by mixing the active substance(s) with known excipients, for example inert diluents such as calcium carbonate, calcium phosphate or lactose, disintegrants such as corn starch or alginic acid, binders such as starch or gelatine, lubricants such as magnesium stearate or talc and/or agents for delaying release, such as carboxymethyl cellulose, cellulose acetate phthalate, or polyvinyl acetate.
- excipients for example inert diluents such as calcium carbonate, calcium phosphate or lactose, disintegrants such as corn starch or alginic acid, binders such as starch or gelatine, lubricants such as magnesium stearate or talc and/or agents for delaying release, such as carboxymethyl cellulose, cellulose acetate phthalate, or polyvinyl acetate.
- excipients for example inert dilu
- Coated tablets may be prepared accordingly by coating cores produced analogously to the tablets with substances normally used for tablet coatings, for example collidone or shellac, gum arabic, talc, titanium dioxide or sugar.
- the core may also consist of a number of layers.
- the tablet coating may consist of a number or layers to achieve delayed release, possibly using the excipients mentioned above for the tablets.
- Syrups or elixirs containing the active substances or combinations thereof according to the invention may additionally contain a sweetener such as saccharine, cyclamate, glycerol or sugar and a flavour enhancer, e.g. a flavouring such as vanillin or orange extract. They may also contain suspension adjuvants or thickeners such as sodium carboxymethyl cellulose, wetting agents such as, for example, condensation products of fatty alcohols with ethylene oxide, or preservatives such as p-hydroxybenzoates.
- a sweetener such as saccharine, cyclamate, glycerol or sugar
- a flavour enhancer e.g. a flavouring such as vanillin or orange extract.
- suspension adjuvants or thickeners such as sodium carboxymethyl cellulose, wetting agents such as, for example, condensation products of fatty alcohols with ethylene oxide, or preservatives such as p-hydroxybenzoates.
- Solutions for injection are prepared in the usual way, e.g. with the addition of preservatives such as p-hydroxybenzoates, or stabilisers such as alkali metal salts of ethylenediamine tetraacetic acid, and transferred into injection vials or ampoules.
- preservatives such as p-hydroxybenzoates, or stabilisers such as alkali metal salts of ethylenediamine tetraacetic acid
- Capsules containing one or more active substances or combinations of active substances may for example be prepared by mixing the active substances with inert carriers such as lactose or sorbitol and packing them into gelatine capsules.
- Suitable suppositories may be made for example by mixing with carriers provided for this purpose, such as neutral fats or polyethyleneglycol or the derivatives thereof.
- a therapeutically effective daily dose is between 1 and 5000 mg, preferably 100-1000 mg per adult.
- the active substance is dissolved in water at its own pH or optionally at pH 5.5 to 6.5 and sodium chloride is added to make it isotonic.
- the solution obtained is filtered free from pyrogens and the filtrate is transferred under aseptic conditions into ampoules which are then sterilised and sealed by fusion.
- the ampoules contain 5 mg, 25 mg and 50 mg of active substance.
- the hard fat is melted. At 40° C. the ground active substance is homogeneously dispersed therein. The mixture is cooled to 38° C. and poured into slightly chilled suppository moulds.
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US7166599B2 (en) | 2007-01-23 |
US20050090486A1 (en) | 2005-04-28 |
WO2003032994A3 (de) | 2003-06-12 |
WO2003032994A2 (de) | 2003-04-24 |
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