The present invention relates to certain DPP-4 inhibitors for treating and/or preventing oxidative stress, vascular stress and/or endothelial dysfunction as well as to the use of such DPP-4 inhibitors in treatment and/or prevention of diabetic or non-diabetic patients, including patient groups at risk of cardiovascular and/or renal disease.

The present invention relates to certain DPP-4 inhibitors for treating and/or preventing oxidative stress, vascular stress and/or endothelial dysfunction as well as to the use of such DPP-4 inhibitors in treatment and/or prevention of diabetic or non-diabetic patients, including patient groups at risk of cardiovascular and/or renal disease.

The invention relates to the use of compounds of general structure (I) in modulation of the Wnt pathway

##STR00001##

wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each, independently, H or an alkyl group; D is selected from the group consisting of H, halogen, alkyl, cycloalkyl, aryl, and dialkylamino, each (other than H and halogen) being optionally substituted; Ar is an aryl or heteroaryl group, optionally substituted; Cy is an aryl, heteroaryl or a saturated ring containing at least one heteroatom, each being optionally substituted; and n is an integer from 1 to 3.

The invention relates to the use of compounds of general structure (I) in modulation of the Wnt pathway

##STR00001##

wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each, independently, H or an alkyl group; D is selected from the group consisting of H, halogen, alkyl, cycloalkyl, aryl, and dialkylamino, each (other than H and halogen) being optionally substituted; Ar is an aryl or heteroaryl group, optionally substituted; Cy is an aryl, heteroaryl or a saturated ring containing at least one heteroatom, each being optionally substituted; and n is an integer from 1 to 3.

The invention relates to the use of compounds of general structure (I) in modulation of the Wnt pathway [Formula should be inserted here] wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each, independently, H or an alkyl group; D is selected from the group consisting of H, halogen, alkyl, cycloalkyl, aryl, and dialkylamino, each (other than H and halogen) being optionally substituted; Ar is an aryl or heteroaryl group, optionally substituted; Cy is an aryl, heteroaryl or a saturated ring containing at least one heteroatom, each being optionally substituted; and n is an integer from 1 to 3.

The invention relates to the use of compounds of general structure (I) in modulation of the Wnt pathway [Formula should be inserted here] wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each, independently, H or an alkyl group; D is selected from the group consisting of H, halogen, alkyl, cycloalkyl, aryl, and dialkylamino, each (other than H and halogen) being optionally substituted; Ar is an aryl or heteroaryl group, optionally substituted; Cy is an aryl, heteroaryl or a saturated ring containing at least one heteroatom, each being optionally substituted; and n is an integer from 1 to 3.

The present invention relates to kinetic resolution of racemic δ-hydroxyl ester via asymmetric catalytic hydrogenation and an application thereof. In the presence of chiral spiro pyridyl phosphine ligand Iridium catalyst and base, racemic δ-hydroxyl esters were subjected to asymmetric catalytic hydrogenation to obtain extent optical purity chiral δ-hydroxyl esters and corresponding 1,5-diols. The method is a new, efficient, highly selective, economical, desirably operable and environmentally friendly method suitable for industrial production. An optically active chiral δ-hydroxyl ester and 1,5-diols can be obtained at very high enantioselectivity and yield with relatively low usage of catalyst. The chiral δ-hydroxyl ester and 1,5-diols obtained by using the method can be used as a critical raw material for asymmetric synthesis of chiral drugs (R)-lisofylline and natural drugs (+)-civet, (−)-indolizidine 167B and (−)-coniine.

The present invention relates to kinetic resolution of racemic δ-hydroxyl ester via asymmetric catalytic hydrogenation and an application thereof. In the presence of chiral spiro pyridyl phosphine ligand Iridium catalyst and base, racemic δ-hydroxyl esters were subjected to asymmetric catalytic hydrogenation to obtain extent optical purity chiral δ-hydroxyl esters and corresponding 1,5-diols. The method is a new, efficient, highly selective, economical, desirably operable and environmentally friendly method suitable for industrial production. An optically active chiral δ-hydroxyl ester and 1,5-diols can be obtained at very high enantioselectivity and yield with relatively low usage of catalyst. The chiral δ-hydroxyl ester and 1,5-diols obtained by using the method can be used as a critical raw material for asymmetric synthesis of chiral drugs (R)-lisofylline and natural drugs (+)-civet, (−)-indolizidine 167B and (−)-coniine.

The present invention relates to the use of a compound of formula (I), a pharmaceutically acceptable salt thereof, a solvate thereof, or a pharmaceutical composition containing the same in reducing uric acid level, preventing or reducing inflammations, and preventing or treating uratic or gouty diseases. In particular, the present invention relates to the use of a compound of formula (I), a pharmaceutically acceptable salt thereof, a solvate thereof, or a pharmaceutical composition containing the same in the manufacture of a medicament for the treatment or prevention of hyperuricemia, gout, gouty inflammations, pain and uric acid nephropathy.

##STR00001##

R.sub.1 represents hydrogen, C.sub.1-4alkyl or the like. R.sub.2 represents C.sub.1-10alkyl or the like. R.sub.3 represents halogen or the like.

The present invention relates to compounds of formula (I) a process for their manufacture, pharmaceutical compositions containing them and their use in therapy, particularly in the treatment of conditions having an association with TRPC5 containing ion channels. R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 have meanings given in the description.