Triazolo and tetrazolo pyrimidine derivatives as HNE inhibitors for treating COPD

1. A compound of formula (I)

in which

A represents C—H,

Y represents N,

Z represents C—R 9 in which

R 9 represents hydrogen, (C 1 -C 6 )-alkyl, (C 1 -C 6 )-alkoxy, (C 1 -C 6 )-alkoxycarbonyl, (C 3 -C 6 )-cycloalkyl, phenyl or 5- or 6-membered heteroaryl,

where (C 1 -C 6 )-alkyl may be substituted by hydroxyl, (C 1 -C 4 )-alkoxy, (C 3 -C 6 )-cycloalkyl or phenyl and up to three times by fluorine

and where

the cycloalkyl groups mentioned may be substituted up to two times by identical or different substituents from the group consisting of (C 1 -C 4 )-alkyl and up to two times by fluorine

and

the phenyl and heteroaryl groups mentioned may be substituted up to two times by identical or different substituents from the group consisting of fluorine, chlorine, cyano, (C 1 -C 4 )-alkyl, difluoromethyl, trifluoromethyl, (C 1 -C 4 )-alkoxy, difluoromethoxy and trifluoromethoxy,

or

R 9 represents a group of the formula —SO 2 —NR 10 R 11 or —NR 12 R 13 in which

R 10 and R 11 are identical or different and independently of one another represent hydrogen, (C 1 -C 6 )-alkyl, (C 3 -C 6 )-cycloalkyl, phenyl or 5- or 6-membered heteroaryl,

R 12 represents hydrogen, (C 1 -C 6 )-alkyl, (C 3 -C 6 )-cycloalkyl, phenyl or (C 1 -C 6 )-alkylsulfonyl,

where (C 1 -C 6 )-alkyl may be substituted by cyano, hydroxyl, (C 1 -C 4 )-alkoxy, hydroxycarbonyl, (C 1 -C 4 )-alkoxycarbonyl, aminocarbonyl, mono-(C 1 -C 4 )-alkylaminocarbonyl, di-(C 1 -C 4 )-alkylaminocarbonyl, (C 3 -C 6 )-cycloalkyl or phenyl and up to three times by fluorine

and where

the cycloalkyl groups mentioned may be substituted up to two times by identical or different substituents from the group consisting of (C 1 -C 4 )-alkyl and up to two times by fluorine

and

the phenyl groups mentioned may be substituted up to two times by identical or different substituents from the group consisting of fluorine, chlorine, cyano, (C 1 -C 4 )-alkyl, difluoromethyl, trifluoromethyl, (C 1 -C 4 )-alkoxy, difluoromethoxy and trifluoromethoxy,

R 13 represents hydrogen, (C 1 -C 6 )-alkyl or a group of the formula —C(═O)—R 14 , —C(═O)—O—R 15 or —C(═O)—NR 16 R 17 in which

R 14 represents hydrogen, (C 1 -C 8 )-alkyl, (C 3 -C 6 )-cycloalkyl, 4- to 6-membered heterocyclyl, phenyl or 5- or 6-membered heteroaryl,

 where (C 1 -C 8 )-alkyl may be substituted by hydroxyl, (C 1 -C 4 )-alkoxy, benzyloxy, phenoxy, (C 1 -C 4 )-acyloxy, amino, mono-(C 1 -C 4 )-alkylamino, di-(C 1 -C 4 )-alkylamino, (C 1 -C 4 )-acylamino, (C 1 -C 4 )-alkoxycarbonylamino, (C 3 -C 6 )-cycloalkyl or phenyl and up to three times by fluorine and up to two CH 2 groups in (C 1 -C 8 )-alkyl may be exchanged for an oxygen atom provided this results in a stable compound

 and where

 the cycloalkyl and heterocyclyl groups mentioned may be substituted up to two times by identical or different substituents from the group consisting of (C 1 -C 4 )-alkyl and up to two times by fluorine

 and

 the phenyl and heteroaryl groups mentioned may be substituted up to two times by identical or different substituents from the group consisting of fluorine, chlorine, cyano, (C 1 -C 4 )-alkyl, difluoromethyl, trifluoromethyl, (C 1 -C 4 )-alkoxy, difluoromethoxy, trifluoromethoxy and hydroxycarbonyl,

R 15 represents (C 1 -C 6 )-alkyl which may be substituted by (C 3 -C 6 )-cycloalkyl or phenyl,

R 16 and R 17 are identical or different and independently of one another represent hydrogen or (C 1 -C 6 )-alkyl which may be substituted by hydroxyl or (C 1 -C 4 )-alkoxy,

or

R 12 and R 13 together with the nitrogen atom to which they are attached form a 5- or 6-membered heterocycle which may contain a further ring heteroatom from the group consisting of N, O and S and which may be substituted up to two times by identical or different substituents from the group consisting of (C 1 -C 4 )-alkyl, hydroxyl, (C 1 -C 4 )-alkoxy and oxo and may be fused to a phenyl ring,

or in which

R 7 and R 9 , if both are present, are attached to one another and together with the carbon atoms to which they are attached form a fused phenyl, pyridyl or pyrimidyl ring which may in each case be substituted up to two times by identical or different substituents from the group consisting of fluorine, chlorine, cyano, (C 1 -C 4 )-alkyl, difluoromethyl, trifluoromethyl, (C 1 -C 4 )-alkoxy, difluoromethoxy and trifluoromethoxy,

R 1 represents hydrogen

or —S(O) n —R 20 in which

R 20 represents (C 1 -C 6 )-alkyl

and

n represents the number 2,

R 2 represents cyano or a group of the formula —C(═O)—R 21 , —C(═O)—O—R 21 or —C(═O)—NH—R 21 in which

R 21 represents hydrogen, (C 1 -C 6 )-alkyl, (C 3 -C 6 )-alkenyl or (C 3 -C 6 )-cycloalkyl,

where (C 1 -C 6 )-alkyl and (C 3 -C 6 )-cycloalkyl for their part may be substituted up to two times by identical or different substituents from the group consisting of hydroxyl, (C 1 -C 4 )-alkoxy, hydroxycarbonyl, (C 1 -C 4 )-alkoxycarbonyl, amino, mono- and di-(C 1 -C 4 )-alkylamino and in (C 1 -C 6 )-alkyl and (C 3 -C 6 )-cycloalkyl in each case one CH 2 group may be replaced by an oxygen atom provided this results in a chemically stable compound,

R 3 represents methyl or ethyl

or

R 2 and R 3 are attached to one another and together form a fused group of the formula

 in which

* denotes the point of attachment to the 5-position, marked in formula (I), of the dihydropyrimidine ring

and

** denotes the point of attachment to the 6-position, marked in formula (I), of the dihydropyrimidine ring

and

R 22 represents hydrogen, (C 1 -C 6 )-alkyl or (C 3 -C 6 )-cycloalkyl,

where (C 1 -C 6 )-alkyl may be substituted by hydroxyl, (C 1 -C 4 )-alkoxy, aminocarbonyl, aminocarbonylamino, (C 1 -C 4 )-acylamino or (C 3 -C 6 )-cycloalkyl,

R 4 represents nitro or trifluoromethyl

and

R 5 represents hydrogen, fluorine or chlorine,

or a salt thereof.

2. The compound of claim 1 in which

A represents CH,

Y represents N,

Z represents C—R 9 ,

in which

R 9 represents hydrogen, (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy, (C 1 -C 4 )-alkoxycarbonyl, (C 3 -C 6 )-cycloalkyl or 5- or 6-membered heteroaryl,

where (C 1 -C 4 )-alkyl may be substituted by hydroxyl, (C 1 -C 4 )-alkoxy or (C 3 -C 6 )-cycloalkyl and up to three times by fluorine

and where

the cycloalkyl groups mentioned may be substituted up to two times by identical or different substituents from the group consisting of (C 1 -C 4 )-alkyl and up to two times by fluorine

and

the heteroaryl group mentioned may be substituted up to two times by identical or different substituents from the group consisting of fluorine, chlorine, cyano, (C 1 -C 4 )-alkyl, difluoromethyl, trifluoromethyl, (C 1 -C 4 )-alkoxy, difluoromethoxy and trifluoromethoxy,

or

R 9 represents a group of the formula —SO 2 —NR 10 R 11 or —NR 12 R 13 in which

R 10 and R 11 are identical or different and independently of one another represent hydrogen, (C 1 -C 4 )-alkyl or (C 3 -C 6 )-cycloalkyl,

R 12 represents hydrogen, (C 1 -C 4 )-alkyl, (C 3 -C 6 )-cycloalkyl or (C 1 -C 4 )-alkylsulfonyl,

where (C 1 -C 4 )-alkyl may be substituted by cyano, hydroxyl, (C 1 -C 4 )-alkoxy, hydroxycarbonyl, (C 1 -C 4 )-alkoxycarbonyl, aminocarbonyl, mono-(C 1 -C 4 )-alkylaminocarbonyl, di-(C 1 -C 4 )-alkylaminocarbonyl or (C 3 -C 6 )-cycloalkyl and up to three times by fluorine

and

the cycloalkyl groups mentioned may be substituted up to two times by identical or different substituents from the group consisting of (C 1 -C 4 )-alkyl and up to two times by fluorine,

R 13 represents hydrogen, (C 1 -C 4 )-alkyl or a group of the formula —C(═O)—R 14 , —C(═O)—O—R 15 or —C(═O)—NR 16 R 17 in which

R 14 represents (C 1 -C 6 )-alkyl, (C 3 -C 6 )-cycloalkyl, 4- to 6-membered heterocyclyl or 5- or 6-membered heteroaryl,

 where (C 1 -C 6 )-alkyl may be substituted by hydroxyl, (C 1 -C 4 )-alkoxy, (C 1 -C 4 )-acyloxy, amino, mono-(C 1 -C 4 )-alkylamino, di-(C 1 -C 4 )-alkylamino, (C 1 -C 4 )-acylamino, (C 1 -C 4 )-alkoxycarbonylamino or (C 3 -C 6 )-cycloalkyl and up to three times by fluorine

 and where

 the cycloalkyl and heterocyclyl groups mentioned may be substituted up to two times by identical or different substituents from the group consisting of (C 1 -C 4 )-alkyl and up to two times by fluorine

 and

 the heteroaryl group mentioned may be substituted up to two times by identical or different substituents from the group consisting of fluorine, chlorine, cyano, (C 1 -C 4 )-alkyl, difluoromethyl, trifluoromethyl, (C 1 -C 4 )-alkoxy, difluoromethoxy and trifluoromethoxy,

R 15 represents (C 1 -C 4 )-alkyl which may be substituted by (C 3 -C 6 )-cycloalkyl or phenyl,

and

R 16 and R 17 are identical or different and independently of one another represent hydrogen or (C 1 -C 4 )-alkyl which may be substituted by hydroxyl or (C 1 -C 4 )-alkoxy,

R 1 represents hydrogen or a group of the formula —SO 2 —R 20 in which

R 20 represents (C 1 -C 4 )-alkyl,

R 2 represents cyano or a group of the formula —C(═O)—R 21 or —C(═O)—O—R 21 in which

R 21 represents methyl, ethyl or 2-hydroxyethyl,

R 3 represents methyl,

R 4 represents trifluoromethyl

and

R 5 represents hydrogen,

or a salt thereof.

3. The compound of claim 1 in which

A represents CH,

Y represents N,

Z represents C—R 9 ,

in which

R 9 represents (C 1 -C 4 )-alkyl, (C 1 -C 4 )-alkoxy or (C 3 -C 6 )-cycloalkyl,

where (C 1 -C 4 )-alkyl may be substituted by hydroxyl, methoxy, ethoxy or (C 3 -C 6 )-cycloalkyl and up to three times by fluorine

and

the cycloalkyl groups mentioned may be substituted up to two times by methyl and up to two times by fluorine,

or

R 9 represents a group of the formula —SO 2 —NR 10 R 11 or —NR 12 R 13 in which

R 10 and R 11 are identical or different and independently of one another represent hydrogen, methyl, ethyl or cyclopropyl,

R 12 represents hydrogen, (C 1 -C 4 )-alkyl, (C 3 -C 6 )-cycloalkyl or (C 1 -C 4 )-alkylsulfonyl,

where (C 1 -C 4 )-alkyl may be substituted by cyano, hydroxyl, (C 1 -C 4 )-alkoxy, hydroxycarbonyl, (C 1 -C 4 )-alkoxycarbonyl, aminocarbonyl, mono-(C 1 -C 4 )-alkylaminocarbonyl, di-(C 1 -C 4 )-alkylaminocarbonyl or (C 3 -C 6 )-cycloalkyl and up to three times by fluorine

and

the cycloalkyl groups mentioned may be substituted up to two times by methyl and up to two times by fluorine,

R 13 represents hydrogen or a group of the formula —C(═O)—R 14 or —C(═O)—NR 16 R 17 in which

R 14 represents (C 1 -C 4 )-alkyl, (C 3 -C 6 )-cycloalkyl or 5- or 6-membered heteroaryl,

 where (C 1 -C 4 )-alkyl may be substituted by hydroxyl, (C 1 -C 4 )-alkoxy, amino, mono-(C 1 -C 4 )-alkylamino, di-(C 1 -C 4 )-alkylamino, (C 1 -C 4 )-acylamino or (C 3 -C 6 )-cycloalkyl and up to three times by fluorine

 and where

 the cycloalkyl groups mentioned may be substituted up to two times by methyl and up to two times by fluorine

 and

 the heteroaryl group mentioned may be substituted up to two times by identical or different substituents from the group consisting of fluorine, cyano, methyl, difluoromethyl, trifluoromethyl, methoxy and trifluoromethoxy,

and

R 16 and R 17 are identical or different and independently of one another represent hydrogen or (C 1 -C 4 )-alkyl which may be substituted by hydroxyl, methoxy or ethoxy,

R 1 represents hydrogen or methylsulfonyl,

R 2 represents cyano, acetyl, ethoxycarbonyl or (2-hydroxyethoxy)carbonyl,

R 3 represents methyl,

R 4 represents trifluoromethyl

and

R 5 represents hydrogen,

or a salt thereof.

4. The compound of claim 1 in which

A represents CH,

Y represents N,

Z represents C—R 9 in which

R 9 represents a group of the formula —NHR 12 or —NH—C(═O)—R 14 in which

R 12 represents a group of the formula —CH 2 —C(═O)—OH or —CH 2 —C(═O)—NH 2

and

R 14 represents (C 3 -C 6 )-cycloalkyl which may be substituted up to two times by methyl and up to two times by fluorine, or (C 1 -C 4 )-alkyl,

R 1 represents hydrogen or methylsulfonyl,

R 2 represents cyano,

R 3 represents methyl,

R 4 represents trifluoromethyl

and

R 5 represents hydrogen,

or a salt thereof.

5. A pharmaceutical composition comprising a compound of claim 1 and at least one inert non-toxic pharmaceutically acceptable excipient.

6. A process for preparing a compound of claim 1 , comprising reacting a compound of formula (II)

in which A, R 1 , R 2 and R 3 each have the meanings given in claim 1 ,

in the presence of a base with a compound of formula (III)

in which Y and Z have the meanings given in claim 1 ,

to give an intermediate of formula (IV)

in which A, Y, Z, R 1 , R 2 and R 3 each have the meanings given above,

cyclizing the intermediate of formula (IV) in situ or in a separate acid-catalyzed reaction step to give a compound of formula (V)

in which A, Y, Z, R 1 , R 2 and R 3 each have the meanings given above,

coupling the compound of formula (V) in the presence of a copper(II) catalyst and a base with a phenylboronic acid of formula (VI)

in which R 4 and R 5 have the meanings given in claim 1 ,

to give the compound of formula (I).