The present invention relates to a compound The instant invention relates to a compound of formulae (I A), (I B), (X A), (X B), (Y A) or (Y B),
wherein R′ represents
and R″ represents hydrogen, hydroxy, C
1
-C
7
alkoxy, C
1
-C
8
-alkanoyloxy, or R
5
R
4
N—CO—O—, where R
4
and R
5
independently are C
1
-C
7
alkyl or phenyl which is unsubstituted or substituted by a substitutent selected from C
1
-C
7
alkyl, C
1
-C
7
alkoxy, halogen and trifluoromethyl and where R
4
additionally is hydrogen; or R
4
and R
5
together represent C
3
-C
6
alkylene;
in free form or in form of a pharmaceutically acceptable acid addition salt.
Compounds of formulae (I A), (I B), (X A), (X B), (Y A) or (Y B) inhibit DPP-IV (dipeptidyl-peptidase-IV) activity. They are therefore indicated for use as pharmaceuticals in inhibiting DPP-IV and in the treatment of conditions mediated by DPP-IV, such as non-insulin-dependent diabetes mellitus, arthritis, obesity, osteoporosis and further conditions of impaired glucose tolerance.
The present invention relates to a compound of formula (I), wherein R is substituted adamantyl; and n is 0 to 3; in free form or in acid addition salt form. Compounds of formula (I) inhibit DPP-IV (dipeptidyl-peptidase-IV) activity. They are therefore indicated for use as pharmaceuticals in inhibiting DPP-IV and in the treatment of conditions mediated by DPP-IV, such as non-insulin-dependent diabetes mellitus, arthritis, obesity, osteoporosis and further conditions of impaired glucose tolerance.