NZ611695B2 - Pyrazole compounds as crth2 antagonists - Google Patents

Abstract

The disclosure relates to pyrazole compounds of formula (1a) or (1b) and pharmaceutically acceptable salts thereof, wherein the variables Ra, Rb, Rc, Rd, Y1, Y2, Y3, Y4, Y5, Z, R1, R2, R3 and n have one of the meanings as indicated in the specification, to their use as medicaments, to pharmaceutical formulation containing said compounds and to pharmaceutical formulations said compounds in combination with one or more active substances. These compounds have chemoattractant receptor-homologous molecule expressed on Th2 cells (CRTH2) antagonistic activity and are suitable for treating inflammatory, infectious and immunoregulatory disorders, respiratory or gastrointestinal diseases, inflammatory diseases of the joints and allergic diseases of the nasopharynx, eyes, and skin. formulation containing said compounds and to pharmaceutical formulations said compounds in combination with one or more active substances. These compounds have chemoattractant receptor-homologous molecule expressed on Th2 cells (CRTH2) antagonistic activity and are suitable for treating inflammatory, infectious and immunoregulatory disorders, respiratory or gastrointestinal diseases, inflammatory diseases of the joints and allergic diseases of the nasopharynx, eyes, and skin.

Description

PYRAZOLE COMPOUNDS AS CRTH2 ANTAGONISTS The present invention relates to pyrazole compounds of formula (la) or (lb) and pharmaceutically acceptable salts thereof having CRTH2 nistic activity, O 1 C R R HO d 3 R (R )n / o a ,1 R Rb ’N NJKfZ Y\Z/7 5 2 R H I1 Y\ \.Y4 2_ 3 (la) Y—Y Rd (R3)n H ”z 0b) Ix, .v5 Y\Y4 1O wherein Ra, Rb, RC, Rd, Y1, Y2, Y3, Y4, Y5, Z, R1, R2, n and R3 have one of the meanings as ted in the specification and claims, to their use as medicaments, to pharmaceutical formulations containing said compounds and to pharmaceutical formulations said compounds in combination with one or more active substances.

BACKGROUND OF THE ION Prostaglandin D2 (PGD2) is an eicosanoid generated by the metabolism of arachidonic acids upon stimulation of inflammatory cells with allergens, matory stimuli or by tissue damage. PGD2 is primarily released by mast cells with Th2 cells, dendritic cells, and macrophages being secondary sources. PGD2 is the major arachidonic acid metabolite produced by mast cells upon allergen challenge (Lewis et al., J. lmmunol. 1982, 129:1627- 1631) and has been ed in high concentrations in the always of asthmatic ts (Murray et al, N. Engl. J. Med., 1986, 315:800-804; Liu etal., Am. Rev. Respir. Dis., 1990, 142 126-132; Zehr et al., Chest, 1989, 95:1059-63; Wenzel et al., J. Allergy. Clin. lmmunol., 1991, 87540-548). PGD2 production is also sed in patients with systemic mastocytosis (Roberts N. Engl. J. Med. 1980, 303, 404; Butterfield et al., lntArch Allergy Immunol, 2008,147:338-343) allergic is (Naclerio et al., Am. Rev. . Dis., 1983, 128:597-602; Brown et al., Arch Otolaryngol Head Neck Surg, 1987, 113:179-183; Lebel et al., J. y Clin. l, 1988, 82:869-877), urticaria (Heavy et al., J. Allergy. Clin. Immunol, 1986, 78:458-461), chronic inusitis (Yoshimura et al., Allergol. Int, 2008, 57:429-436), chronic obstructive pulmonary disease (Csanky et al., ophoresis, 2009, 30:1228-1234) and during anaphylaxis (Ono et al., Clin. Exp. Allergy, 2009, 39:72-80). 1O lnstillation of PGD2 into always can provoke features of asthmatic response including bronchoconstriction (Hardy et al., 1984, N Engl J. Med 311:209-213; Sampson et al 1997, Thorax 52: 513-518) and eosinophil accumulation (Emery et al., 1989, J. Applied l 67: 959-962). The potential of PGD2 to trigger inflammatory responses has been confirmed by the overexpression of human PGD2 synthase in mice resulting in elevated eosinophil lung inflammation and Th2 cytokine production in response to allergen (Fujitani et al, 2002 J. l. 168:443-449).

PGD2 is an agonist of two 7-transmembrane type G protein-coupled receptors, the PGD2 receptor DP1 (Boie et al., J Biol Chem, 1995, 270:18910-6) and the recently identified CRTH2 (chemoattractant receptor-homologous molecule expressed on Th2 cells) receptor (also referred to as DP2 receptor) (Nagata et al., J. Immunol, 1999, 162:1278-86).

CRTH2 is expressed on Th2 cells, eosinophils, basophils and mast cells (Nagata et al., FEBS Lett, 1999, 459: 195-199; Nagata et al., J Immunol, 1999, 162: 1278-1286; Cosmi et al., EurJ Immunol, 2000, 30:2972-2979; Boehme et al., Int Immunol, 2009, 21: 621-32).

Using selective CRTH2 agonists like 13,14 dihydroketo-PGD2 (DK-PGD2) and 15R- methyl-PGD2, it has been shown that CRTH2 activation tes cellular ses that lead to the recruitment and activation of inflammatory cells (Spik et al., J. Immunol, 2005;174:3703-8; Shiraishi, J. Pharmacol. Exp. Ther., 2005, 312:954-60; Monneret et al., J. 3O Pharmacol. Exp. Ther., 2003, 304:349-355). Using CRTH2 selective antagonists it has been shown that inflammatory responses and pathophysiological changes in animal models of diseases like asthma, allergic rhinitis, atopic dermatitis and COPD can be shed (Uller et al., Respir Res. 2007, 8:16; Lukacs et al., Am. J. Physiol. Lung Cell Mol. Physiol. 2008, 295:L767-79; s, Bioorg. Med. Chem. Lett. 2009,19:4647-51; Nomiya, J Immunol, 2008, 180:5680-5688; Boehme et al., Int. Immunol, 2009, 21:1-17; Boehme et al., lnt Immunol, 2009, 21:81-93; Takeshita et al., Int Immunol, 2004, 16:947-59; ns et al., J.

Pharmacol. Exp. Ther. 2009). Moreover, genetic deletion of CRTH2 in mice diminished matory responses in animal models of allergy (Shiraishi et al., J. lmmunol. 2008;180:541-549; Oiwa, Clin Exp Allergy, 2008, 38:1357-66; Satoh et al., J. Immunol, 2006,177:2621-9). In contrast, the selective DP1 t BW245C does not promote inflammatory responses, like migration or activation of Th2 lymphocytes, basophils or eosinophils (Yoshimura-Uchiyama et al., Clin. Exp. y, 2004, 34:1283-90; Xue et al., Immunol, 2005, 31-6; Gervais et al., J. Allergy Clin. Immunol, 2001, 108:982-8).

Therefore, agents that antagonize the effects of PGD2 at the CRTH2 receptor should be 1O useful for the treatment of respiratory or gastrointestinal complaints, as well as inflammatory diseases of the joints and allergic diseases of the nasopharynx, eyes and skin. teaches pyrimidine derivatives of formula (a) and salts thereof, NI / N RSIQ 1 wherein R6 is carboxy, carboxamide, nitrile or tetrazolyl, said derivatives having CRTH2 antagonistic activity and can be used for the prophylaxis and ent of diseases associated with CRTH2 activity. claims alkylthio substituted pyrimidine nds of formula (b), Rgfio;\ ( )kR 4:1:WN said compounds having CRTH2 antagonistic activity. claims 2—S-benzyl pyrimidine compounds of formula (c), I R 2 A (R5)m (0) R N 8(0)k said compounds having CRTH2 antagonistic activity.

EP 0 480 659 claims compounds of general a (d), / ii wherein Z2 inter alia may be carboxyl-C1-C1O-alkyl-C= and Y may be substituted , said 1O compounds being useful for the treatment of hyperuricemia. claims compounds of general a (e), R21) R8 N/ \ t >’ 1 R R2a f said nds being useful for the treatment of conditions such as pain, or an inflammatory, immunological, bone, neurodegenerative or renal disorder.

WO 01/38325 claims compounds of general formula (f), Ital REijCEHzlfiWY (align mil 3' w-(mni—ni wherein A is an aromatic ring and B is a nitrogen-containing 5-membered hetero ring which may r be substituted, said nds having hypoglycemic and hypolipidemic activity.

It is an objective of the present invention to provide further nds having CRTH2 antagonistic ty.

Preferably the compounds of the present invention have enhanced al stability, enhanced pharmacokinetic properties (PK) and/or enhanced activity in a whole cell assay.

SUMMARY OF THE INVENTION A first aspect of the invention provides for a pyrazole compound of formula (Ia) or (Ib) or a pharmaceutically acceptable salt thereof, O R1 Rc HO Rd (R3) N O Ra Rb N Z R2 H Y5 Y1 Y4 (Ia) Y2 Y3 O R1 Rc HO Rd (R3) N O Ra Rb N Y1 R2 H Z (Ib) Y2 Y3 Y4 wherein Ra and Rb are independently ed from hydrogen, hydroxy, halogen, C1-C6-alkyl, C1-C6 haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy and C3-C8-cycloalkyl, or Ra and Rb together with the carbon atom they are bound to form may form a carbonyl group, or Ra and Rb together with the carbon atom they are bound to form a 3- to ered ring, wherein said ring may contain 1 or 2 heteroatoms selected from O, N and S as ring member and wherein the ring members of said ring may optionally be independently substituted by hydroxy, halogen, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy and C3-C8-cycloalkyl; (9925931_1):KZA Rc and Rd are independently selected from hydrogen, hydroxy, halogen, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy and C3-C8-cycloalkyl, or Ra and Rb together with the carbon atom they are bound to form may form a carbonyl group, or Ra and Rb together with the carbon atom they are bound to form a 3- to 8-membered ring, wherein said ring may n 1 or 2 heteroatoms selected from O, N and S as ring member and wherein the ring members of said ring may optionally be independently substituted by hydroxy, halogen, alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy and C3-C8-cycloalkyl; Y1, Y2, Y3, Y4 and Y5 are independently selected from N and CRy, wherein each Ry is ndently selected from H, hydroxy, halogen, cyano, nitro, SF5, C(O)NRfRg, C1-C6-alkyl, hydroxy-C1-C6-alkyl, C1-C6-alkoxy-C1-C6-alkyl, C3- C8-cycloalkyl, C1-C6-haloalkyl, alkoxy, alkoxy-C1-C6-alkoxy, C1-C6-haloalkoxy, C3-C8-cycloalkoxy, C1-C6-alkylamino, di-C1-C6-alkylamino, C1-C6-alkylsulfonyl, phenyl, phenoxy, 5- or 6-membered heterocyclyl and 5- or 6-membered heterocyclyloxy, wherein Rf and Rg are independently from each other selected from H, C1-C6-alkyl, haloalkyl, C3-C8-cycloalkyl, C3-C8-cycloalkenyl and 5- or 6-membered heterocyclyl or Rf and Rg together with the nitrogen atom to which they are bound form a cyclic amine, which may comprise a further heteroatom selected from O, N and S as a ring member; Z is selected from O, S and NRz, wherein Rz is H, C1-C6-alkyl or benzyl; R1 and R2 independently from each other are ed from H, halogen, alkyl, C2-C6-alkenyl, C2-C6-alkynyl, alkoxy, C1-C6-alkylthio, -NRfRg, cycloalkyl, C3-C8-cycloalkyl-C1-C6-alkyl, C3-C8-cycloalkyl-C2-C6-alkenyl, C3-C8-cycloalkenyl, C3-C8-cycloalkenyl-C1-C6-alkyl, C3-C8-cycloalkenyl-C2-C6-alkenyl, phenyl, phenyl-C1-C6-alkyl, phenyl-C2-C6-alkenyl, naphthyl, naphthyl-C1-C6-alkyl, naphthyl-C2-C6-alkenyl, heterocyclyl, cyclyl-C1-C6-alkyl, and heterocyclyl-C2-C6-alkenyl, wherein the C1-C6-alkyl, C2-C6-alkenyl and C2-C6-alkynyl moieties in the aforementioned radicals R1 and R2 are unsubstituted or carry at least one substituent selected from hydroxy, halogen, cyano, nitro, C1-C6-alkoxy, C1-C6-haloalkoxy, C1-C6-alkylamino, di C1-C6-alkylamino and C1-C6-alkylsulfonyl and/or (9925931_1):KZA wherein two radicals bound to the same carbon atom of said C1-C6-alkyl, C2-C6-alkenyl and C2-C6-alkynyl moieties in the aforementioned ls R1 and R2 together with said carbon atom may form a carbonyl group, and wherein the C3-C8-cycloalkyl, cycloalkenyl, phenyl, naphthyl and heterocyclyl moieties in the aforementioned radicals R1 and R2 are unsubstituted or carry at least one substituent selected from hydroxy, halogen, cyano, nitro, C1-C6-alkyl, C3-C8-cycloalkyl, C1-C6-haloalkyl, alkoxy, haloalkoxy, C1-C6-alkylamino, di-C1-C6-alkylamino, C1-C6-alkylsulfonyl, phenyl and 5- or 6- membered hetaryl and/or wherein two ls bound to the same carbon atom of said C3-C8-cycloalkyl, cycloalkenyl and heterocyclyl moieties of the radicals R1 and R2 together with said carbon atom may form a carbonyl group, and wherein Rf and Rg are independently from each other selected from H, C1-C6-alkyl, C1-C6-haloalkyl, C3-C8-cycloalkyl, cycloalkenyl and heterocyclyl or Rf and Rg together with the nitrogen atom to which they are bound form a cyclic amine, which may comprise a further heteroatom selected from O, N and S as a ring ; n is an integer selected from 0, 1, 2 or 3; and R3 if present are selected independently from each other from halogen, C1-C6-alkoxy and C1-C6-haloalkoxy.

A second aspect of the invention provides for use of a pyrazole compound of formula (Ia) or (Ib) ing to the first aspect of the invention, or a pharmaceutically acceptable salt thereof, for ing a medicament for the treatment of diseases related to CRTH2 activity.

A third aspect of the invention provides for use of a pyrazole compound of formula (Ia) or (Ib) according to the first aspect of the invention, or a pharmaceutically acceptable salt thereof, for preparing a medicament for the prevention and/or ent of inflammatory, infectious and immunoregulatory disorders, respiratory or gastrointestinal diseases or complaints, inflammatory diseases of the joints and allergic es of the nasopharynx, eyes, and skin. (9925931_1):KZA A fourth aspect of the invention provides for a pharmaceutical formulation, containing one or more of the pyrazole compounds of a (Ia) and/or (Ib) according to the first aspect of the invention, or a pharmaceutically acceptable salt thereof.

A fifth aspect of the invention provides for a pharmaceutical formulation, containing one or more pyrazole compounds of formula (Ia) and/or (Ib) according to the first aspect of the ion, or a pharmaceutically acceptable salt thereof, in combination with one or more active substances selected from among betamimetics, anticholinergics, corticosteroids, PDE4 tors, LTD4 antagonists, EGFR inhibitors, CCR3 antagonists, CCR5 antagonists, CCR9 antagonists, 5-LO inhibitors, ine-receptor antagonists, SYK inhibitors and sulfonamides.

DETAILED DESCRIPTION OF THE INVENTION The present invention s to pyrazole compounds of formula (Ia) or (Ib) and pharmaceutically acceptable salts thereof, O R1 Rc HO Rd (R3) N O Ra Rb N Z R2 H Y5 Y1 Y4 (Ia) Y2 Y3 O R1 Rc HO Rd (R3) N O Ra Rb N Y1 R2 H Z (Ib) Y2 Y4 wherein Ra and Rb are independently selected hydrogen, hydroxy, halogen, C1-C6-alkyl, C1-C6 haloalkyl, alkoxy, C1-C6-haloalkoxy and C3-C8-cycloalkyl, or Ra and Rb together with the carbon atom they are bound to form may form a carbonyl group, or Ra and Rb together with the carbon atom they are bound to form a 3- to 8-membered ring, n said ring may contain 1 or 2 heteroatoms selected from O, N and S as ring member and wherein the ring members of said ring may optionally be independently (9925931_1):KZA tuted by hydroxy, halogen, C1-Cs-alkyl, C1-C6-haloalkyl, C1-Cs-alkoxy, C1-C6- haloalkoxy and C3-Cg-cycloalkyl; RC and Rd are independently selected hydrogen, hydroxy, halogen, C1-Cs-alkyl, C1-C6- haloalkyl, C1-C6-alkoxy, haloalkoxy and Cs-Cg-cycloalkyl, or RC and Rd together with the carbon atom they are bound to form may form a carbonyl group, or RC and Rd together with the carbon atom they are bound to form a 3- to 8—membered ring, wherein said ring may contain 1 or 2 heteroatoms selected from O, N and S as ring member and wherein the ring s of said ring may optionally be independently 1O substituted by y, halogen, C1-Cs-alkyl, haloalkyl, C1-Cs-alkoxy, C1-C6- haloalkoxy and C3-Cg-cycloalkyl; Y1, Y2, Y3, Y4 and Y5 are independently selected from N and CRY, wherein each Ry is independently selected from H, hydroxy, halogen, cyano, nitro, SF5, C(O)NRfR9, C1- Cs-alkyl, hydroxy-C1-Cs-alkyl, C1-Cs-alkoxy-C1-Cs-alkyl, Cs- Cg-cycloalkyl, C1-C6- kyl, C1-C6-alkoxy, C1-Cs-alkoxy-C1-C6-alkoxy, C1-Cs-haloalkoxy, C3-C8- cycloalkoxy, alkylamino, di-C1-Cs-alkylamino, C1-Cs-alkylsulfonyl, phenyl, phenoxy, 5- or 6-membered heterocyclyl and 5- or 6-membered heterocyclyloxy, wherein Rf and R9 are independently from each other selected from H, C1-Cs-alkyl, C1-C6-haloalkyl, C3-Cg-cycloalkyl, C3-Cg-cycloalkenyl and 5- or 6-membered heterocyclyl or Rf and R9 together with the nitrogen atom to which they are bound form a cyclic amine, which may se a further heteroatom selected from O, N and S as a ring member; is selected from O, S and NRZ, wherein RZ is H, C1-Cs-alkyl or benzyl; R1 and R2 are independently from each other selected from H, halogen, C1-Cs-alkyl, Cz-Cs- alkenyl, Cz-Cs-alkynyl, C1-C6-alkoxy, C1-Cs-alkylthio, -NRfR9, C3-Cg-cycloalkyl, C3-C8- lkyl-C1-C6-alkyl, cycloalkyl-Cz-Cs-alkenyl, C3-Cg-cycloalkenyl, C3-C8- 3O cycloalkenyl-C1-C6-alkyl, C3-Cg-cycloalkenyl-Cz-Cs-alkenyl, , phenyl-C1-Cs-alkyl, phenyl-Cz-Cs-alkenyl, naphthyl, naphthyl-C1-Cs-alkyl, naphthyl-Cz-Cs-alkenyl, heterocyclyl, heterocyclyl-C1-Cs-alkyl, and heterocyclyl-Cz-Cs-alkenyl, wherein the C1-Cs-alkyl, Cz-Cs-alkenyl and C2-C6-alkynyl moieties in the aforementioned radicals R1 and R2 are unsubstituted or carry at least one substituent selected from hydroxy, halogen, cyano, nitro, C1-C6-alkoxy, C1-Cs-haloalkoxy, alkylamino, di C1-C6-alkylamino and C1-C6-alkylsulfonyl and/or wherein two radicals bound to the same carbon atom of said C1-Cs-alkyl, Cz-Cs- alkenyl and C2-C6-alkynyl moieties in the aforementioned radicals R1 and R2 together with said carbon atom may form a carbonyl group, and wherein the Cs-Cg-cycloalkyl, cycloalkenyl, phenyl, naphthyl and heterocyclyl moieties in the aforementioned ls R1 and R2 are unsubstituted or carry at least one substituent 1O selected from hydroxy, halogen, cyano, nitro, C1-Cs-alkyl, C3-Cg-cycloalkyl, C1-C6- haloalkyl, C1-C6-alkoxy, C1-Cs-haloalkoxy, C1-Cs-alkylamino, di-C1-Cs-alkylamino, C1- Cs-alkylsulfonyl, phenyl and 5- or 6- membered hetaryl and/or wherein two ls bound to the same carbon atom of said C3-Cg-cycloalkyl, C3-C8- cycloalkenyl and heterocyclyl moieties of the radicals R1 and R2 together with said carbon atom may form a carbonyl group, and wherein Rf and R9 are independently from each other selected from H, C1-Cs-alkyl, C1-C6- haloalkyl, Cs-Cg-cycloalkyl, cycloalkenyl and heterocyclyl or Rf and R9 er with the nitrogen atom to which they are bound form a cyclic amine, which may comprise a further atom selected from O, N and S as a ring member; is an r selected from 0, 1, 2 or 3; and if present are selected independently from each other from halogen, C1-Cs-alkyl, C1- Cs-haloalkyl, C1-Cs-alkoxy, C1-C6-haloalkoxy and C3-Cg-cycloalkyl. singly it has been found that the compounds of formula (la) or (lb) according to the present ion have significant CRTH2 antagonistic activity. Further it has been found that said compounds generally have enhanced chemical stability, enhanced pharmacokinetic properties (PK) and/or enhanced activity in a whole cell assay.

Thus the pyrazole compounds of formula (la) or (lb) according to the present invention are suitable for the prevention and/or treatment of diseases related to CRTH2—activity.

Accordingly the present invention further relates to the use of le compounds of formula (la) or (lb) according to the present invention as ments.

Furthermore the t invention relates to the use of compounds of formula (la) or (lb) for preparing a medicament for the treatment of diseases related to CRTH2—activity. More specifically the present invention s to the use of pyrazole compounds of formula (la) or 1O (lb) for preparing a medicament for the prevention and/or treatment of inflammatory, infectious and immunoregulatory disorders, respiratory or gastrointestinal diseases or ints, inflammatory diseases of the joints and allergic diseases of the nasopharynx, eyes, and skin.

The present invention further relates to compounds of formula (la) or (lb) according to the invention for treating and/or preveting diseases related to CRTH2—activity More specifically the present invention relates to compounds of formula (la) or (lb) for use as a ment for treating diseases related to CRTH2—activity. More specifically the present invention relates to pyrazole compounds of formula (la) or (lb) for use as a medicament for the prevention and/or treatment of inflammatory, infectious and regulatory disorders, atory or gastrointestinal diseases or complaints, inflammatory diseases of the joints and allergic diseases of the nasopharynx, eyes, and skin.

Furthermore the present invention relates to ceutical formulations, containing one or more of the pyrazole compounds of formula (la) or (lb) according to the present invention as sole active substance or in ation with one or more active substances selected from among betamimetics, anticholinergics, corticosteroids, PDE4 inhibitors, LTD4 antagonists, EGFR inhibitors, CCR3 antagonists, CCR5 antagonists, CCR9 antagonists, 5-LO inhibitors, histamine-receptor antagonists, SYK inhibitors and sulphonamides.

The ty in a whole cell eosinophil shape change assay of the compounds of the invention can be ined, for e, according to the following nces: (i) Mathiesen JM, Ulven T, Martini L, Gerlach LO, Heinemann A, Kostenis E. Identification of indol derivatives exclusively interfering with a G protein-independent signalling pathway of the prostaglandin D2 receptor CRTH2. Mol Pharmacol. 2005 Aug;68(2):393-402; (ii) Schuligoi R, Schmidt R, WO 01043 Geisslinger G, Kollroser M, Peskar BA, Heinemann A. PGD2 metabolism in plasma: kinetics and relationship with bioactivity on DP1 and CRTH2 receptors. m col. 2007 Jun 30;74(1):107-17; (iii) Royer JF, Schratl P, Carrillo JJ, Jupp R, Barker J, Weyman-Jones C, Beri R, Sargent C, Schmidt JA, Lang-Loidolt D, Heinemann A. A novel antagonist of prostaglandin D2 blocks the locomotion of eosinophils and basophils. Eur J Clin Invest. 2008 Sep;38(9):663-71.

The chemical stability of the compounds of the invention can be determined, for example, under the following conditions: (i) 3 days tion at 60°C in 0.1 N HCI (hydrolytic stability 1O under acidc conditions); (ii) 3 days incubation at 60°C in pH 4.0 buffer solution (hydrolytic stability under weakly acidic ions); (iii) 3 days incubation at 60°C in pH 7.4 buffer solution (hydrolytic stability at physiological pH); (iv) 3 days incubation at 20°C in 0.3 % hydrogen peroxide (stability against oxidants); (v) 24 h tion under UV-radiation (lambda = 300 - 800 nm, P = 250 W/m2) in water (stability against light). The kinetics of degradation can, for example, be ined by HPLC analysis.

The pharmacokinetic properties (PK) of the compounds of the invention can be determined in pre-clinical animal species, for example, mouse, rat, dog, guinea pig, mini pig, cynomolgus monkey, rhesus monkey. The pharmacokinetic properties of a compound can be bed, for example, by the following parameters: Mean residence time, half-life, volume-of- distribution, AUC (area under the , clearance, bioavailability after oral administration.

USED TERMS AND DEFINITIONS Terms not ically defined herein should be given the meanings that would be given to them by one of skill in the art in light of the disclosure and the context. As used in the specification, however, unless specified to the contrary, the following terms have the meaning indicated and the following conventions are d to. 3O In the groups, ls or moieties defined below, the number of carbon atoms is often specified preceding the group. As an example "C1-C6-alkyl" means an alkyl group or radical having 1 to 6 carbon atoms.

In general, for groups comprising two or more subgroups, the last named group is the radical attachment point.

Unless ise specified, conventional definitions of terms control and conventional stable atom valences are presumed and achieved in all formulas and groups.

In l all tautomeric forms and isomeric forms and mixtures, whether individual geometric isomers or l isomers or racemic or non-racemic es of isomers of a al structure or nd, are comprised, unless the specific stereochemistry or isomeric form is specifically indicated in the nd name or structure. 1O The term "substituted" as used herein, means that any one or more hydrogens on the designated atom, moiety or radical is replaced with a ion from the ted group of radicals, provided that the designated atom's normal valence is not exceeded, and that the substitution results in a stable compound.

The nds disclosed herein can exist as pharmaceutically acceptable salts. The present invention includes compounds in the form of salts, including acid addition salts.

Suitable salts include those formed with both organic and inorganic acids. Such acid addition salts will normally be pharmaceutically acceptable. However, salts of non-pharmaceutically acceptable salts may be of utility in the preparation and cation of the compound in question. Basic on salts may also be formed and be pharmaceutically acceptable. For a more complete discussion of the preparation and selection of salts, refer to Pharmaceutical Salts: Properties, Selection, and Use (Stahl, P. Heinrich. Wiley-VCH, Zurich, Switzerland, 2002).

The term "pharmaceutically acceptable salt," as used , represents salts or zwitterionic forms of the compounds disclosed herein which are water or oil-soluble or dispersible and pharmaceutically acceptable as defined herein. The salts can be prepared during the final ion and purification of the compounds or separately by reacting the appropriate compound in the form of the free base with a suitable acid. Representative acid addition salts 3O include acetate, adipate, alginate, L-ascorbate, aspartate, benzoate, benzenesulfonate (besylate), bisulfate, butyrate, camphorate, camphor sulfonate, citrate, digluconate, formate, fumarate, gentisate, glutarate, glycerophosphate, glycolate, hemisulfate, heptanoate, hexanoate, hippurate, hydrochloride, hydrobromide, hydroiodide, 2—hydroxyethansulfonate ionate), lactate, maleate, malonate, DL-mandelate, mesitylene sulfonate, methane sulfonate, naphthylene sulfonate, nate, 2—naphthalenesulfonate, oxalate, pamoate, WO 01043 pectinate, persulfate, 3-phenylproprionate, phosphonate, picrate, pivalate, propionate, pyroglutamate, succinate, sulfonate, tartrate, rate, trichloroacetate, trifluoroacetate, phosphate, glutamate, bicarbonate, para-toluenesulfonate (p-tosylate), and undecanoate.

Also, basic groups in the compounds disclosed herein can be quaternized with methyl, ethyl, propyl, and butyl chlorides, bromides, and s; dimethyl, diethyl, dibutyl, and diamyl sulfates; decyl, lauryl, myristyl, and steryl chlorides, bromides, and iodides; and benzyl and phenethyl bromides. Examples of acids which can be ed to form therapeutically acceptable addition salts include inorganic acids such as hydrochloric acid, hydrobromic acid, sulfuric acid and oric acid, and organic acids such as oxalic acid, maleic acid, 1O ic acid and citric acid. Salts can also be formed by coordination of the compounds with an alkali metal or alkaline earth ion. Hence, the present invention comprises sodium, potassium, magnesium, and calcium salts of the compounds disclosed herein, and the like.

Basic addition salts can be ed during the final isolation and cation of the compounds by reacting a carboxy group with a suitable base such as the hydroxide, carbonate, or bicarbonate of a metal cation or with ammonia or an organic primary, secondary, or tertiary amine. The cations of pharmaceutically acceptable salts e lithium, sodium, potassium, m, magnesium, and aluminum, as well as nontoxic quaternary amine cations such as ammonium, tetramethylammonium, tetraethylammonium, methylamine, dimethylamine, trimethylamine, triethylamine, diethylamine, ethylamine, tributylamine, pyridine, N,N-dimethylaniline, N-methylpiperidine, N-methylmorpholine, dicyclohexylamine, procaine, dibenzylamine, N,N-dibenzylphenethylamine, namine, and N,N'-dibenzylethylenediamine. Other entative organic amines useful for the formation of base addition salts include ethylenediamine, ethanolamine, diethanolamine, piperidine and piperazine.

While it may be possible for the compounds of the present invention to be administered as the raw chemical, it is also le to t them as a pharmaceutical formulation.

Accordingly, provided herein are pharmaceutical formulations which comprise one or more of 3O certain compounds disclosed herein, or one or more pharmaceutically acceptable salts, esters, prodrugs, amides, or solvates thereof, together with one or more pharmaceutically acceptable carrier and optionally one or more other therapeutic ingredients. The carrier(s) must be "acceptable" in the sense of being compatible with the other ingredients of the ation and not deleterious to the recipient thereof. Proper formulation is dependent upon the route of administration . Any of the well-known techniques, carriers and excipients may be used as suitable and as understood in the art; e.g. in Remington's Pharmaceutical Sciences. The pharmaceutical itions disclosed herein may be manufactured in any manner known in the art, e.g., by means of conventional mixing, dissolving, granulating, dragee-making, levigating, emulsifying, encapsulating, entrapping or compression processes.

The term en" as used herein denotes a n substituent selected from fluoro, chloro, bromo or iodo. 1O The term "C1-Cs-alkyl" as used herein (including the alkyl moieties of C1-C6-alkoxy, C1-Cs-alkylamino, di-C1-Cs-alkylamino, C1-Cs-alkylthio and the like) denotes branched and unbranched alkyl moieties with 1 to 6 carbon atoms attached to the remaining compound at any position of the alkyl chain. The term -alkyl" accordingly denotes a branched or unbranched alkyl moiety with 1 to 4 carbon atoms. -alkyl" is generally preferred.

Examples of "C1-Cs-alkyl" include: methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, sec- butyl, tert-butyl, yl, iso-pentyl, ntyl or hexyl. Unless stated othenNise, the definitions propyl, butyl, pentyl and hexyl include all the possible isomeric forms of the groups in question. Thus, for e, propyl includes n-propyl and iso-propyl, butyl es iso- butyl, sec-butyl and tert-butyl etc.

The term "C1-Cs-haloalkyl" as used herein (including the alkyl moieties of C1-Cs-haloalkoxy, C1-Cs-haloalkylamino, di-C1-Cs-haloalkylamino, C1-Cs-haloalkylthio and the like) denotes branched and unbranched alkyl moieties with 1 to 6 carbon atoms wherein one or more hydrogen atoms are replaced by a halogen atom selected from among fluorine, chlorine or bromine, preferably fluorine and ne, particularly preferably fluorine. The term -haloalkyl" accordingly denotes branched and ched alkyl moieties with 1 to 4 carbon atoms, n one or more hydrogen atoms are replaced analogously to what was stated above. C1_C4-haloalkyl is generally preferred. Preferred examples include: CHZF, CHFZ and CFs.

The term "CZ-Cs-alkenyl" as used herein (including the alkenyl moieties of other radicals) denotes branched and unbranched alkenyl groups with 2 to 6 carbon atoms attached to the remaining compound at any position of the alkenyl chain and having at least one double bond. The term "C2-C4-alkenyl" accordingly s branched and unbranched alkenyl moieties with 2 to 4 carbon atoms. Preferred are alkenyl moieties with 2 to 4 carbon atoms.

Examples include: ethenyl or vinyl, propenyl, butenyl, pentenyl or hexenyl. Unless otherwise stated, the definitions propenyl, butenyl, pentenyl and hexenyl include all possible isomeric forms of the moieties in question. Thus, for example, propenyl includes 1-propenyl and 2- propenyl, butenyl includes 1-, 2- and 3-butenyl, 1-methylpropenyl, 1-methylpropenyl etc.

The term "CZ-Cs-alkynyl" as used herein (including the alkynyl moieties of other radicals) denotes ed and unbranched alkynyl groups with 2 to 6 carbon atoms attached to the remaining compound at any position of the alkynyl chain and having at least one triple bond. 1O The term "CZ-C4-alkynyl" accordingly denotes ed and unbranched alkynyl moieties with 2 to 4 carbon atoms. Alkynyl moieties with 2 to 4 carbon atoms are preferred. Examples include: ethynyl, propynyl, butynyl, pentynyl, or hexynyl. Unless stated othenrvise, the definitions propynyl, butynyl, pentynyl and hexynyl include all the possible ic forms of the respective moieties. Thus, for e, propynyl includes ynyl and 2-propynyl, butynyl includes 1-, 2- and 3-butynyl, 1-methylpropynyl, 1-methylpropynyl etc.

The term "Cs-Cg-cycloalkyl" as used herein (including the cycloalkyl es of other radicals) denotes cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl and cyclooctyl.

Preferred are cyclic alkyl groups with 3 to 6 carbon atoms, such as cyclopropyl, entyl and cyclohexyl.

The term "Cs-Cg-cycloalkenyl" as used herein (including the cycloalkenyl moieties of other radicals) denotes yclic radicals having 3 to 8 carbon atoms and containing at least one, preferably one or two, non-conjugated double bonds. Examples are cyclopentenyl, cyclopantadienyl, cyclohexenyl and exadienyl.

The term "heterocyclyl" as used herein (including the heterocyclyl es of other radicals) denotes 5- to ered heterocyclic radicals and 5- to‘lO-membered, ic heterocyclic radicals, containing one, two or three atoms, selected from O, N and S as ring 3O members. The heterocyclyl may be linked to the molecule by a carbon atom or, if present, by a nitrogen atom. The term "heterocyclyl" as used herein encompasses saturated or partially unsaturated heterocyclyl as well as hetaryl.

The term "saturated or partially unsaturated heterocyclyl" as used herein (including the cyclyl moieties of other radicals) denotes 5- to 7-membered monocyclic heterocyclic radicals as defined above containing a number of double bonds such that no aromatic system is formed as well as 5- to 10-membered bicyclic heterocyclic radicals as defined above containing a number of double bonds such that no aromatic system is formed in at least one of the cycles.

Examples of monocyclic saturated or partially unsaturated heterocyclyl include pyrrolidine, tetrahydrofurane, tetrahydrothiophene, thiazolidine, dioxolane, piperidine, tetrahydropyrane, tetrahydrothiopyrane, piperazine, morpholine, thiomorpholine, oxazepane, and the like. 1O Examples of bicyclic saturated or partially unsaturated heterocyclyl include dihydropyrrolizine, pyrrolizine, tetrahydroquinoline, tetrahydroisoquinoline, tetrahydroimidazopyridine, tetrahydropyrazolopyridine, benzopyrane, benzodiazepine, and the like.

The term "hetaryl" as used herein (including the cyclyl moieties of other radicals) denotes 5- to ered monocyclic heterocyclic radicals as defined above containing a number of double bonds such that an ic system is formed as well as 5- to 10- membered bicyclic heterocyclic radicals as defined above containing a number of double bonds such that an aromatic system is formed in both cycles.

Examples of monocyclic aromatic heterocyclyl include furan, thiazole, pyrrole, thiophene, pyrazole, imidazole, thiadiazole, 1,2,3-triazole, 1,2,4-triazole, tetrazole, oxazole, oxadiazole, pyridine, pyridazine, pyrimidine, pyrazine, and the like. es of ic aromatic heterocyclyl include pyrrolizine, indol, indolizine, isoindol, l, purine, quinoline, isoquinoline, benzimidazol, uran, benzothiazol, sothiazol, pyridopyrimidine, pteridine, dopyrimidine, imidazopyridine, lopyridine, and the like. 3O The term "fused carbocyclic or heterocyclic " as used herein denotes C3-Cg-cycloalkyl, Cs-Cg-cycloalkenyl, benzene and heterocyclyl moieties as defined above, wherein said moieties share at least one bond with the cyclic moiety they are bound to. As an example benzene fused to benzene is naphthalene. Preferred are fused cyclic moieties sharing one bond with the cyclic moiety they are fused to. r preferred the fused moiety is benzene.

The term "3- to 8—membered ring formed by two radicals er with the carbon atom they are bound, wherein said ring may n 1 or 2 heteroatoms selected from O, N and S as ring member" as used herein denotes C3-Cg-cycloalkyl, Cs-Cg-cycloalkenyl and heterocyclyl moieties as defined above.

The term "cyclic amine formed by two radicals together with the en atom to which they are bound, wherein said ring may comprise a further heteroatom selected from O, N and S as a ring member" as used herein denotes cyclic amines having 3 to 8, ably 5 or 6, ring s. Examples of such formed amines are pyrrolidine, piperidine, piperazine, 1O morpholine, pyrrol, imidazole, and the like.

The terms "heterocyclyl-C1-Cs-alky|", "C3-Cg-cycloalkyl-C1-Cs-alky|", "phenyl-C1-C6-alkyl" and "naphthyl-Ci-Cs-alkyl" as used herein denote alkyl moieties as defined above having 1 to 6 carbon atoms, wherein any one of the hydrogen atoms is ed by a cyclic moiety as defined above. In these terms the alkyl moiety preferably has 1 to 4 carbon atoms (Ci-C4- alkyl). More preferably the alkyl moiety is methyl or ethyl, and most preferred methyl.

Preferred examples of -Ci-Cs-alkyl are benzyl or phenethyl.

The terms "heterocyclyl-Cz-Cs-alkenyl", "C3-Cg-cycloalkyl-Cz-Cs-alkenyl", "phenyl-Cz-Cs- alkenyl" and "naphthyl-Cz-Cs-alkenyl" as used herein denote alkenyl moieties as defined above having 2 to 6 carbon atoms, wherein any one of the hydrogen atoms is replaced by a cyclic moiety as defined above. In these terms the alkenyl moiety preferably has 2 to 4 carbon atoms (CZ-C4-alkenyl). More preferably the alkenyl moiety is ethenyl. A preferred example of phenyl-Cz-Cs-alkenyl is henyl.

The specific and preferred definitions given for the individual ls and moieties Ra, Rb, RC, Rd, Y1, Y2, Y3, Y4, Y5, Z, R1, R2, n and R3 herein below are valuable on their own as well as in combination. As will be understood preferred are compounds of formula (la) or (lb) wherein one ore more of the individual radicals and moieties Ra, Rb, RC, Rd, Y1, Y2, Y3, Y4, Y5, Z, R1, R2, n and R3 have one of the meanings indicated as preferred herein-below and wherein the remaining radicals and moities are as specified hereinbefore. Most preferred are compounds of a (la) or (lb) wherein all of the individual ls and moieties Ra, Rb, RC, Rd, Y1, Y2, Y3, Y4, Y5, Z, R1, R2, n and R3 have one of the meanings indicated as preferred herein-below.

One particular embodiment of the invention relates to pyrazole compounds of formula (la), wherein the individual moieties have one of the meanings given in the specification.

Preferred are compounds of formula (la), wherein the individual moieties have one of the preferred gs given in the specification. r ular embodiment of the ion s to pyrazole compounds of formula (lb), wherein the individual moieties have one of the meanings given in the specification.

Preferred are compounds of formula (lb), wherein the individual es have one of the preferred meanings given in the specification.

Preferred are pyrazole compounds of formula (la) or (lb), n R8 and Rb are independently selected hydrogen, C1-Cs-alkyl, C1-Cs haloalkyl and C3-Cg-cycloalkyl.

Particularly preferred are pyrazole compounds of formula (la) or (lb), wherein R8 and Rb are both en.

Likewise preferred are pyrazole compounds of formula (la) or (lb), wherein RC and Rd are ndently selected hydrogen, C1-Cs-alkyl, C1-Cs-haloalkyl and C3-Cg-cycloalkyl.

Particularly preferred are pyrazole compounds of formula (la) or (lb), wherein RC and Rd are both hydrogen.

Likewise preferred are pyrazole compounds of formula (la) or (lb), wherein Y1 is CRy1 or N, wherein Ry1 has one of the meanings given for RV.

More preferred are pyrazole compounds of a (la) or (lb), wherein Y1 is CR“, in particular wherein Ry1 is selected from H, C1-Cs-alkyl, C1-Cs-alkoxy-C1-C6-alkyl and C1-C6- haloalkyl. 3O Likewise preferred are pyrazole compounds of formula (la) or (lb), wherein Y2 is CRYZ, Y3 is CR”, Y4 is CRy4 and/or Y5 is CRy5, wherein Rfi, RVs, RW and RW independently from each other have one of the meanings as defined for RV.

More preferred are pyrazole compounds of formula (la) or (lb), wherein Y2 is CRYZ, Y3 is CR”, Y4 is CRy4 and Y5 is CRY5, n Rfi, R”, RW and RW independently from each other have one of the meanings as d for RV, in particular wherein Rfi, R”, RW and RW are independently selected from H, halogen, alkoxy, C1-C6-alkoxy-C1-Cs-alkoxy and C1-C6- haloalkoxy.

One particular ment of the ion relates to pyrazole nds of formula (la) or (lb), wherein Z is O and the remaining moieties have one of the meanings given in the specification, preferably one of the preferred gs given in the specification.

Another particular embodiment of the invetion relates to pyrazole compounds of formula (la) 1O or (lb), wherein Z is S and the remaining moieties have one of the meanings given in the specification, preferably one of the preferred meanings given in the specification.

Another particular embodiment of the ion relates to pyrazole nds of formula (la) or (lb), wherein Z is NRZ, n RZ is H, C1-C6-alkyl or benzyl, and the remaining moieties have one of the meanings given in the ication, preferably one of the preferred meanings given in the specification.

Likewise preferred are pyrazole compounds of formula (la) or (lb), wherein R1 and R2 independently from each other are selected from H, C1-Cs-alkyl, C3-Cg-cycloalkyl, phenyl and naphthyl.

More preferred are pyrazole compounds of formula (la) or (lb), wherein R1 and R2 independently from each other are selected from H, C1-C4-alkyl, C3-Cs-cycloalkyl and phenyl.

Particularly preferred are pyrazole compounds of formula (la) or (lb), wherein R1 and R2 are selected from C1-C4-alkyl.

Likewise preferred are pyrazole compounds of formula (la) or (lb), wherein n is 0, 1, 2 or 3, in particular n n is 0 or 1.

Likewise preferred are pyrazole compounds of formula (la) or (lb), wherein R3 if present are independently selected from halogen, C1-Cs-alkoxy and haloalkoxy.

More preferred are pyrazole compounds of formula (la) or (lb), wherein R3 if present are independently selected from halogen, in particular from F, Cl and Br. 2012/050830 One preferred particular embodiment of the invention relates to pyrazole compounds selected from compounds of formula (la’), HO I ('3') wherein Z, R1, R2, R3, R“, Rfi, RVs, RW and RW have one of the meanings given above and n isOor1.

More preferred are pyrazole compounds (la’) wherein at least one of the moieties Z, R1, R2, R3, R“, RYZ, R”, RW and RW have one of the preferred meanings given above.

Another preferred particular embodiment of the invention relates to pyrazole compounds selected from compounds of formula (lb’), R 3 (R ), / O Rw HO P O R2 N Z (Ib') Ry wherein Z, R1, R2, R3, R“, Rfi, RVs, RW and RW have one of the meanings given above.

More preferred are pyrazole compounds (la’) n at leastone of the moieties Z, R1, R2, R3, R“, RYZ, R”, RW and RW have one of the red meanings given above.

A further embodiment of the t invention relates to compounds of formula (la) or (lb), wherein the compounds of formula (la) or (lb) are present in the form of the individual optical isomers, es of the individual enantiomers or racemates, preferably in the form of the enantiomerically pure compounds.

A further embodiment of the present invention relates to compounds of formula (la) or (lb), wherein the compounds of formula (la) or (lb) are present in the form of the acid addition salts thereof with pharmacologically acceptable acids as well as optionally in the form of the es and/or hydrates.

PREPARATION The compounds ing to the invention may be ed using methods of synthesis which are known to a person skilled in the art and described in the literature of organic 1O sis. Preferably the compounds are obtained analogously to the methods of preparation explained more fully hereinafter, in particular as described in the experimental section.

Compounds of formula (la) according to the present inventioncan be prepared according to scheme 1.

Scheme 1 O 1 R R° PG 0_ d R (R3)n / + LG Ra b pH R “’N R2 N02 Starting material I Starting material ll (R3). 3 R )n N02 tion) NH2 PG-O PG-O Intermediate l Intermediate ll Y\1\Z/7 5 Z/§\¥ 3 \\Y4 2Y 2_ 5 O \ 1 Y—Y Y (R3) " Starting Material lll NH (Coupling) (Deprotectron) —> R0 —> (la) R1 N. . lll Intermediate O \ /N b 2 PG-O RaR R According to scheme 1 the compounds of the present invention can be prepared employing as starting al | (1 H-pyrazolyl)acetic acid derivatives, which are substituted with tuents Ra, Rb, R1, R2 and with a ylic acid protecting group PG. These compounds can, in some cases, be obtained from commercial sources or can be ed according to literature procedures, for example . Suitable protecting groups can be ed from T. W. , Protective Groups in Organic Synthesis, Wiley, 3rd edition, 1999. Preferred protecting groups PG are , ethyl, tert—butyl.

Intermediate I can be obtained by alkylation of starting material | with a suitable 4-nitrobenzyl 1O compounds as starting material ll, wherein LG is a suitable leaving group such as halogen, in particular Br, or mesylate, in the presence of a base. Suitable bases are inorganic bases such as carbonates, especially potassium carbonate. The reaction is preferably d out in an organic solvent such as dimethylformamide, dimethylsulfoxid, itrile, tetrahydrofuran, romethane or a e of ts. The reaction usually takes place within 1 to 48 hours. Preferred reaction temperatures are between 0°C and the boiling point of the reaction mixture. When R1 is different from R2, the alkylation reaction may yield a mixture of regioisomers. The individual isomers may be separated by methods which are known to a person skilled in the art, for example, chromatography over silica gel employing a suitable solvent or solvent mixtures, or preparative reversed phase chromatography, ing a suitable gradient of solvents, or trituration or crystallization from suitable solvents or solvent mixtures.

Amine intermediate II can be prepared from intermediate l by reduction of the nitro group, for instance by enolysis in the presence of a catalyst, such as palladium on carbon or Raney Nickel. The reaction is preferably carried out in an inert organic solvent, such as methanol, ethanol, acetic acid, ethyl acetate or a mixture of solvents. The reaction usually takes place within 1 to 48 hours. Preferred reaction temperatures are between 0°C and 50°C.

WO 01043 Preferred reaction pressures are between atmospheric pressure and 100 bar. The reduction of the nitro group in intermediate II can also be carried out according to alternative methods described in J. March, Advanced Organic Chemistry, Wiley, 4th n, 1992, p. 1216-1217.

Amide intermediate lll can be prepared from amine intermediate II by ng with a carboxylic acid (Starting Material III) in the presence of a coupling reagent, such as 2-(1H- benzotriazoleyl)-1,1,3,3-tetramethyluronium tetrafluoroborate (TBTU), and a base, such as diisopropylethylamine. The reaction is preferably carried out in an inert organic solvent, such as dimethylformamide, tetrahydrofuran, dichloromethane or a mixture of solvents. The reaction usually takes place within 1 to 48 hours. Preferred reaction atures are 1O between 0°C and 30°C. The coupling of a carboxylic acid to the amino group of intermediate lll can also be carried out according to alternative methods described in J. March, Advanced Organic Chemistry, Wiley, 4th n, 1992, p. 419-421. Alternatively, instead of the carboxylic acid (starting material Ill) and a coupling t, the corresponding acyl chloride or ide may be employed.

Compounds of formula (la) can be obtained from intermediate III by removal of the protecting group PG. In the case the hydroxycarbonyl group is protected by CH3 or C2H5, this conversion can be carried out under aqueous conditions in the presence of an inorganic base, such as NaOH or LiOH. The on is preferably carried out in water or a mixture of water with CH30H, C2H5OH, tetrahydrofuran or dioxane. The reaction y takes place within 1 to 48 hours. Preferred reaction temperatures are n 0°C and the boiling point of the reaction mixture. In the case that PG is tert-butyl, the ection can be carried out under acidic conditions, for instance with trifluoroacetic acid, hydrochloric acid or montmorillonit. When using trifluoroacetic acid, the reaction can be carried out in neat trifluoroacetic acid or in an inert solvent, such as dichloromethane. The reaction usually takes place within 1 to 48 hours. Preferred reaction temperatures are n 0°C and 30°C. The cleavage of the protecting group PG may also be carried out according to alternative methods described in J. March, Advanced Organic Chemistry, Wiley, 4th n, 1992, p. 378-383 or in T. W. Greene, Protective Groups in Organic Synthesis, Wiley, 3rd n, 1999.

Compounds of formula (lb) can be obtained ing the procedure depicted in scheme I using starting material of formula lll’, wherein Starting material lll' Y1, Y2, Y3, Y4, Y5 and Z have one of the meanings indicated above, instead of starting material lll.

INDICATIONS The compounds of formula (la) or (lb) according to the present invention are especially useful for manufacturing a medicament for the prevention and/or treatment of es 1O wherein the activity of a CRTH2—receptor is involved.

One embodiment of the t invention relates to the manufacturing of a medicament for the prevention and/or treatment of a wide variety of inflammatory, infectious, and immunoregulatory disorders, respiratory or gastrointestinal diseases or complaints, matory diseases of the joints and allergic diseases of the nasopharynx, eyes, and skin.

Such disorders diseases and complaints include asthma and allergic diseases, eosinophilic diseases, chronic ctive pulmonary disease, infection by pathogenic microbes (which, by definition, includes viruses), as well as autoimmune pathologies, such as the rheumatoid arthritis and atherosclerosis.

Preferred is the manufacturing of a medicament for the prevention and/or treatment of inflammatory or allergic diseases and conditions, including allergic or non-allergic rhinitis or sinusitis, chronic sinusitis or rhinitis, nasal polyposis, c rhinosinusitis, acute inusitis, , pediatric asthma, allergic bronchitis, itis, Farmer’s disease, hyperreactive ainrvays, allergic conjunctivitis, bronchitis or pneumonitis caused by infection, e.g. by bacteria or viruses or helminthes or fungi or protozoons or other pathogens, bronchiectasis, adult respiratory distress syndrome, bronchial and pulmonary edema, bronchitis or pneumonitis or interstitial nitis caused by different origins, e.g. aspiration, tion of toxic gases, vapors, itis or pneumonitis or interstitial pneumonitis caused by heart failure, , radiation, chemotherapy, itis or pneumonitis or interstitial pneumonitis associated with collagenosis, e.g. lupus erythematodes, systemic derma, lung fibrosis, idiopathic pulmonary lung fibrosis (IPF), titial lung diseases or interstitial pneumonitis of different origin, including asbestosis, silicosis, m. Boeck or sarcoidosis, granulomatosis, cystic fibrosis or mucoviscidosis, or 0L1- ypsin deficiency, eosinophilic cellulites (e.g., Well's syndrome), eosinophilic pneumonias (e.g., Loeffler's syndrome, chronic eosinophilic pneumonia), eosinophilic fasciitis (e. g., Shulman's syndrome), delayed-type hypersensitivity, non-allergic asthma; exercise induced oconstriction; chronic obstructive pulmonary disease (COPD), acute bronchitis, c bronchitis, cough, pulmonary emphysema; systemic anaphylaxis or ensitivity responses, drug allergies (e.g., to penicillin, cephalosporin), eosinophilia-myalgia syndrome due to the ingestion of contaminated tryptophane, insect sting allergies; autoimmune 1O diseases, such as rheumatoid tis, psoriatic arthritis, multiple sclerosis, systemic lupus erythematosus, myasthenia gravis, immune ocytopenia (adult ITP, neonatal thrombocytopenia, pediatric ITP), immune hemolytic anemia (auto-immune and drug induced), Evans me (platelet and red cell immune enias), Rh disease of the n, Goodpasture’s syndrome (anti-GBM disease), Celiac, autoimmune cardio- myopathyjuvenile onset diabetes; glomerulonephritis, autoimmune thyroiditis, Behcet's disease; graft rejection (e.g., in transplantation), including allograft rejection or graftversus- host disease; inflammatory bowel diseases, such as Crohn's disease and ulcerative colitis; spondyloarthropathies; scleroderma; psoriasis (including T-cell mediated psoriasis) and inflammatory dermatoses such as an dermatitis, eczema, atopic itis, allergic contact dermatitis, urticaria; vasculitis (e. g., necrotizing, cutaneous, and hypersensitivity itis); erythema nodosum; eosinophilic myositis, philic fasciitis, cancers with leukocyte infiltration of the skin or organs.

METHOD OF TREATMENT Accordingly, the compounds of formula (la) or (lb) according to the present invention are useful in the prevention and/or treatment of a wide variety of inflammatory, infectious, and immunoregulatory ers and diseases. Such disorders and es include but are not limited to asthma and allergic diseases, chronic obstructive pulmonary e, infection by 3O pathogenic microbes , by definition, includes viruses), autoimmune pathologies such as the rheumatoid arthritis and atherosclerosis.

As an example, an instant nd of formula (la) or (lb) which inhibits one or more functions of a mammalian CRTH2 receptor (e. g., a human CRTH2 receptor) may be administered to inhibit (i.e., reduce or prevent) inflammation and bronchoconstriction. As a 2012/050830 result, one or more inflammatory ses, such as leukocyte emigration, adhesion, chemotaxis, exocytosis (e. g., of enzymes, growth factors, histamine, cytotoxic proteins), inflammatory mediator release, survival or proliferation of CRTH2 expressing cells is inhibited. For example, activation or recruitment of Th2 cells, mast cells, basophils and philic to inflammatory sites (e. g., in asthma or allergic is) can be inhibited according to the present method.

In particular, the compounds of the ing examples have activity in blocking the activation and migration of cells expressing the CRTH2 receptor using the appropriate CRTH2 agonists 1O in the entioned assays.

Diseases or ions of humans which can be d with inhibitors of CRTH2 or function, include, but are not limited to inflammatory or ic diseases and conditions, including allergic or non-allergic rhinitis or sinusitis, chronic sinusitis or rhinitis, nasal polyposis, c rhinosinusitis, acute rhinosinusitis, asthma, pediatric asthma, allergic bronchitis, itis, Farmer’s disease, hyperreactive airways, allergic conjunctivitis, bronchitis or pneumonitis caused by infection, e.g. by bacteria or viruses or helminthes or fungi or protozoons or other pathogens, bronchiectasis, adult respiratory distress syndrome, bronchial and pulmonary edema, bronchitis or pneumonitis or interstitial pneumonitis caused by different origins, e.g. aspiration, inhalation of toxic gases, vapors, bronchitis or pneumonitis or interstitial pneumonitis caused by heart failure, X—rays, radiation, chemotherapy, bronchitis or pneumonitis or interstitial pneumonitis associated with collagenosis, e.g. lupus erythematodes, ic scleroderma, lung fibrosis, idiopathic pulmonary lung fibrosis (IPF), interstitial lung diseases or interstitial nitis of different origin, including asbestosis, silicosis, m. Boeck or sarcoidosis, granulomatosis, cystic fibrosis or mucoviscidosis, or a1-antitrypsin deficiency, eosinophilic cellulites (e.g. Well's syndrome), eosinophilic pneumonias (e.g. Loeffler's syndrome, chronic eosinophilic pneumonia), eosinophilic fasciitis (e.g. Shulman's syndrome), delayed-type ensitivity, non-allergic asthma, exercise induced bronchoconstriction; chronic obstructive pulmonary disease 3O (COPD), acute itis, chronic bronchitis, cough, pulmonary emphysema; ic anaphylaxis or hypersensitivity responses, drug allergies (e. g., to penicillin, cephalosporin), eosinophilia-myalgia syndrome due to the ingestion of contaminated tryptophane, insect sting allergies; autoimmune diseases, such as rheumatoid arthritis, psoriatic arthritis, multiple sclerosis, systemic lupus erythematosus, myasthenia gravis, immune ocytopenia (adult ITP, neonatal ocytopenia, pediatric ITP), immune hemolytic anemia (auto- immune and drug induced), Evans syndrome (platelet and red cell immune cytopaenias), Rh disease of the newborn, Goodpasture’s syndrome (anti-GBM disease), Celiac, autoimmune cardio-myopathyjuvenile onset diabetes; glomerulonephritis, autoimmune ditis, Behcet's disease; graft rejection (e.g. in transplantation), including allograft rejection or graftversus-host disease; inflammatory bowel diseases, such as Crohn's disease and ulcerative s; spondyloarthropathies; scleroderma; psoriasis ding T-cell mediated psoriasis) and inflammatory dermatoses such as an dermatitis, eczema, atopic dermatitis, allergic contact dermatitis, urticaria; vasculitis (e.g. necrotizing, ous, and hypersensitivity vasculitis); erythema nodosum; eosinophilic myositis, eosinophilic fasciitis; 1O cancers with leukocyte infiltration of the skin or .

COMBINATIONS The compounds of a (la) or (lb) according to the present ion may be used on their own or in combination with other compounds of formula (la) or (lb). The compounds of formula (la) or (lb) may optionally also be combined with other pharmacologically active substances.

Such pharmacologically active substances useable in the pharmaceutical composition containing compounds of formula (la) or (lb) of the t invention may be selected from but are not limited to the s consisting of f52—adrenoceptor—agonists (short and long- acting beta mimetics), anti-cholinergics (short and long-acting), anti-inflammatory steroids (oral and l corticosteroids), dissociated-glucocorticoidmimetics, PDE3 inhibitors, PDE4 inhibitors, PDE7 inhibitors, LTD4 antagonists, EGFR inhibitors, PAF antagonists, Lipoxin A4 derivatives, FPRL1 tors, LTB4-receptor (BLT1, BLT2) antagonists, histamine-receptor antagonists, Pl3-kinase inhibitors, inhibitors of non-receptor tyrosine kinases as for example LYN, LCK, SYK, ZAP-70, FYN, BTK or ITK, tors of MAP s as for example p38, ERK1, ERK2, JNK1, JNK2, JNK3 or SAP, inhibitors of the NF-KB signaling y as for example IKK2 kinase inhibitors, iNOS inhibitors, MRP4 tors, leukotriene biosynthesis 3O inhibitors as for example 5-Lipoxygenase (5-LO) inhibitors, cPLA2 inhibitors, Leukotriene A4 hydrolase inhibitors or FLAP inhibitors, non-steroidal anti-inflammatory agents (NSAle), DP1-receptor modulators, thromboxane receptor antagonists, CCR1 antagonists, CCR2 antagonists, CCR3 antagonists, CCR4 antagonists, CCR5 antagonists, CCR6 antagonists, CCR7 nists, CCR8 antagonists, CCR9 antagonists, CCR10 antagonists, CXCR1 antagonists, CXCR2 antagonists, CXCR3 antagonists, CXCR4 antagonists, CXCR5 antagonists, CXCR6 antagonists, CX3CR1 antagonists, neurokinin (NK1, NK2) antagonists, sphingosine 1-phosphate receptor tors, sphingosine 1-phosphate-lyase inhibitors, Adenosine or modulators as for example A2a-agonists, modulators of purinergic receptors as for example P2X? inhibitors, Histone Deacetylase (HDAC) activators, Bradykinin (BK1, BK2) antagonists, TACE inhibitors, PPAR gamma modulators, Rho-kinase inhibitors, interleukin 1-beta converting enzyme (ICE) inhibitors, Toll-like receptor (TLR) modulators, HMG-CoA reductase tors, VLA-4 antagonists, lCAM-1 inhibitors, SHIP agonists, GABAa receptor antagonist, nhibitors, Melanocortin receptor (MC‘IR, MCZR, MC3R, MC4R, MCSR) modulators, CGRP antagonists, Endothelin antagonists, 1O mucoregulators, immunotherapeutic agents, compounds against swelling of the always, compounds against cough, CBZ agonists, retinoids, immunosuppressants, mast cell stabilizers, methylxanthine, opioid receptor agonists, laxatives, anti-foaming agents, antispasmodic agents, 5-HT4 ts but also combinations of two or three active substances.

Preferred are combinations of two or three active nces, i.e.: CRTH2 antagonists according to the present invention with betamimetics, anticholinergics, corticosteroids, PDE4 tors, LTD4 nists, EGFR inhibitors, CCR3 antagonists, CCR5 antagonists, CCR9 antagonists, 5-LO inhibitors, histamine receptor antagonists, SYK inhibitors and amides, or i.e.: . CRTH2 antagonists with betamimetics and corticosteroids, PDE4 inhibitors, CCR3 antagonists or LTD4 nists, . CRTH2 antagonists with olinergics and betamimetics, corticosteroids, PDE4 inhibitors, CCR3 nists or LTD4 antagonists, . CRTH2 antagonists with corticosteroids and PDE4 inhibitors, CCR3 antagonists or LTD4 antagonists . CRTH2 antagonists with PDE4 inhibitors and CCR3 antagonists or LTD4 antagonists In the pharmaceutical compositions according to the present invention the CRTH2 3O antagonists of formula (la) or (lb) may be contained in a form selected from ers, optical isomers, enantiomers, racemates, diastereomers, cologically acceptable acid addition salts, es or hydrates, as far as such forms exist, depending on the individual compound. Pharmaceutical compositions comprising one or more, preferably one, compound 1 in form of a substantially pure enantiomer are preferred. 2012/050830 In the pharmaceutical compositions according to the present invention more than one CRTH2 nist of formula (la) or (lb) and more than one further pharmacologically active compound can be t.

PHARMACEUTICAL FORMS Suitable preparations for stering the compounds of a (la) or (lb) include for example tablets, capsules, suppositories, solutions and powders etc. The t of the pharmaceutically active compound(s) should be in the range from 0.05 to 90 wt.-%, 1O preferably 0.1 to 50 wt.-% of the composition as a whole.

Suitable s may be obtained, for example, by mixing the active substance(s) with known excipients, for example inert diluents such as m carbonate, calcium phosphate or lactose, disintegrants such as corn starch or alginic acid, binders such as starch or ne, lubricants such as magnesium te or talc and/or agents for delaying release, such as carboxymethyl ose, cellulose acetate phthalate, or polyvinyl acetate. The tablets may also comprise several layers.

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. To achieve delayed release or prevent incompatibilities the core may also consist of a number of layers. Similarly 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 flavor er, e.g. a flavoring such as vanillin or orange extract. They may also contain suspension adjuvants or thickeners such as sodium carboxymethyl cellulose, 3O wetting agents such as, for example, condensation ts of fatty alcohols with ethylene oxide, or preservatives such as p-hydroxybenzoates.

Solutions are prepared in the usual way, e.g. with the addition of isotonic agents, vatives such as p-hydroxybenzoates or stabilizers such as alkali metal salts of ethylenediaminetetraacetic acid, optionally using emulsifiers and/or dispersants, while if water is used as diluent, for example, organic solvents may ally be used as solubilisers or dissolving aids, and the solutions may be transferred into ion vials or ampoules or infusion bottles.

Capsules containing one or more active substances or combinations of active substances may for example be prepared by mixing the active substances with inert rs such as e or sorbitol and packing them into ne capsules.

Suitable itories may be made for example by mixing with carriers provided for this 1O purpose, such as neutral fats or polyethyleneglycol or the derivatives thereof.

Excipients which may be used include but are not limited to water, pharmaceutically acceptable organic solvents such as paraffins (e.g. petroleum ons), vegetable oils (e.g. groundnut or sesame oil), mono- or polyfunctional alcohols (e.g. ethanol or glycerol), carriers such as e.g. natural mineral powders (e.g. kaolins, clays, talc, chalk), synthetic mineral powders (e.g. highly dispersed c acid and silicates), sugars (e.g. cane sugar, lactose and glucose), emulsifiers (e.g. lignin, spent te liquors, methylcellulose, starch and polyvinylpyrrolidone) and lubricants (e.g. magnesium stearate, talc, stearic acid and sodium lauryl sulphate).

For oral use the tablets may obviously contain, in addition to the carriers specified, additives such as sodium citrate, calcium carbonate and dicalcium phosphate together with various additional substances such as starch, preferably potato starch, gelatine and the like.

Lubricants such as ium te, sodium laurylsulphate and talc may also be used to produce the tablets. In the case of aqueous suspensions the active substances may be combined with various flavor enhancers or ngs in on to the abovementioned excipients.

The compounds of formula (la) or (lb) may also be administered as preparations or 3O pharmaceutical formulations suitable for inhalation. lnhalable preparations include inhalable powders, propellant-containing metered-dose aerosols or propellant-free inhalable solutions.

Within the scope of the present invention, the term propellant-free inhalable solutions also include trates or sterile inhalable solutions ready for use. The formulations which may be used within the scope of the present invention are described in more detail in the next part of the specification.

The inhalable powders which may be used according to the invention may n (la) or (lb) either on its own or in admixture with le physiologically acceptable excipients.

If the active nces (la) or (lb) are present in admixture with physiologically acceptable excipients, the following physiologically acceptable excipients may be used to prepare these inhalable powders according to the invention: monosaccharides (e.g. e or arabinose), disaccharides (e.g. lactose, saccharose, maltose), oligo- and polysaccharides (e.g. dextrans), polyalcohols (e.g. ol, mannitol, xylitol), salts (e.g. sodium chloride, calcium 1O carbonate) or mixtures of these excipients. Preferably, mono- or disaccharides are used, while the use of lactose or glucose is preferred, particularly, but not ively, in the form of their hydrates. For the purposes of the invention, lactose is the particularly preferred excipient, while lactose monohydrate is most particularly preferred.

Within the scope of the inhalable powders according to the present invention the excipients have a maximum average particle size of up to 250 um, preferably n 10 and 150 um, most preferably between 15 and 80 pm. It may sometimes seem appropriate to add finer excipient ons with an e particle size of 1 to 9 pm to the excipient mentioned above. These finer excipients are also selected from the group of possible excipients listed before. Finally, in order to prepare the inhalable powders according to the invention, micronised active substance 1, preferably with an average particle size of 0.5 to 10 um, more preferably from 1 to 5 um, is added to the excipient mixture. Processes for producing the ble powders according to the invention by grinding and micronising and finally mixing the ingredients together are known from the prior art.

The inhalable powders according to the ion may be stered using inhalers known from the prior art.

The tion aerosols containing propellant gas according to the invention may contain the 3O compounds of formula (la) or (lb) dissolved in the propellant gas or in dispersed form. The compounds of formula (la) or (lb) may be contained in separate formulations or in a common formulation, in which the compounds of formula (la) or (lb) are either both dissolved, both sed or in each case only one component is dissolved and the other is dispersed. The propellant gases which may be used to prepare the inhalation aerosols are known from the prior art. Suitable propellant gases are selected from among hydrocarbons such as n-propane, n-butane or isobutane and halohydrocarbons such as fluorinated derivatives of methane, ethane, propane, butane, cyclopropane or cyclobutane. The abovementioned propellant gases may be used on their own or mixed together. Particularly preferred propellant gases are halogenated alkane tives selected from TG‘l34a and TG227 and mixtures f.

The propellant-driven inhalation aerosols may also contain other ingredients such as co-solvents, stabilizers, surfactants, antioxidants, lubricants and pH ers. All these ingredients are known in the art.

The propellant-driven inhalation aerosols according to the invention mentioned above may be stered using inhalers known in the art (MDls = metered dose inhalers).

Moreover, the active substances of formula (la) or (lb) according to the invention may be administered in the form of propellant-free ble solutions and suspensions. The solvent used may be an aqueous or alcoholic, preferably an ethanolic solution. The solvent may be water on its own or a mixture of water and ethanol. The relative proportion of ethanol compared with water is not limited but the maximum is preferably up to 70 percent by volume, more particularly up to 60 percent by volume and most preferably up to 30 percent by . The remainder of the volume is made up of water. The ons or suspensions containing compounds of formula (la) or (lb) are adjusted to a pH of 2 to 7, preferably 2 to 5, using le acids. The pH may be adjusted using acids ed from nic or organic acids. Examples of particularly suitable inorganic acids include hydrochloric acid, hydrobromic acid, nitric acid, sulphuric acid and/or phosphoric acid. Examples of particularly suitable organic acids include ascorbic acid, citric acid, malic acid, tartaric acid, maleic acid, succinic acid, fumaric acid, acetic acid, formic acid and/or nic acid etc. Preferred inorganic acids are hydrochloric and sulphuric acids. It is also possible to use the acids which have already formed an acid on salt with one of the active substances. Of the organic acids, ascorbic acid, fumaric acid and citric acid are preferred. If desired, mixtures of the above acids may be used, particularly in the case of acids which have other properties in addition to their acidifying ies, e.g. as flavorings, antioxidants or complexing agents, such as citric acid or ascorbic acid, for example. According to the invention, it is particularly preferred to use hydrochloric acid to adjust the pH.

If desired, the addition of editic acid (EDTA) or one of the known salts thereof, sodium edetate, as stabilizer or complexing agent may be omitted in these formulations. Other embodiments may contain this compound or these compounds. In a preferred ment the content based on sodium edetate is less than 100 mg/100 ml, preferably less than 00ml, more ably less than 20 mg/100 ml. Generally, inhalable ons in which the t of sodium edetate is from 0 to 10 mg/100 ml are preferred.

Co-solvents and/or other excipients may be added to the propellant-free inhalable solutions.

Preferred co-solvents are those which contain hydroxyl groups or other polar groups, e.g. 1O alcohols - particularly isopropyl alcohol, glycols - particularly propyleneglycol, polyethyleneglycol, polypropyleneglycol, glycolether, glycerol, polyoxyethylene alcohols and polyoxyethylene fatty acid esters. The terms excipients and additives in this context denote any pharmacologically acceptable substance which is not an active substance but which can be ated with the active nce or substances in the physiologically suitable t in order to improve the qualitative properties of the active substance formulation. Preferably, these substances have no pharmacological effect or, in connection with the desired therapy, no appreciable or at least no undesirable pharmacological effect. The excipients and additives include, for example, tants such as soya lecithin, oleic acid, sorbitan esters, such as polysorbates, nylpyrrolidone, other stabilizers, complexing agents, antioxidants and/or preservatives which guarantee or prolong the shelf life of the finished pharmaceutical formulation, ings, vitamins and/or other additives known in the art. The additives also include pharmacologically acceptable salts such as sodium chloride as isotonic agents.

The preferred excipients include antioxidants such as ascorbic acid, for example, provided that it has not already been used to adjust the pH, n A, vitamin E, tocopherols and similar vitamins and provitamins occurring in the human body.

Preservatives may be used to protect the formulation from contamination with pathogens.

Suitable preservatives are those which are known in the art, particularly cetyl pyridinium chloride, konium chloride or benzoic acid or benzoates such as sodium benzoate in the concentration known from the prior art. The preservatives mentioned above are preferably present in concentrations of up to 50 mg/100 ml, more preferably between 5 and mg/100 ml.

The dosage of the compounds according to the invention is naturally highly dependent on the method of administration and the complaint which is being treated. When administered by inhalation the nds of formula (la) or (lb) are characterized by a high potency even at doses in the ug range. The compounds of formula (la) or (lb) may also be used effectively above the ug range. The dosage may then be in the gram range, for example.

In another aspect the present invention relates to the above-mentioned pharmaceutical formulations as such which are characterized in that they n a compound of formula (la) or (lb), particularly the above-mentioned pharmaceutical formulations which can be administered by inhalation.

The following examples of formulations illustrate the present invention without restricting its scope: Examples of ceutical formulations: A) Tablets per tablet active substance (la) or (lb) 100 mg lactose 140 mg maize starch 240 mg polyvinylpyrrolidone 15 mg magnesium stearate 5 mg 2 500 mg The finely ground active substance, lactose and some of the maize starch are mixed together. The mixture is screened, then moistened with a solution of nylpyrrolidone in water, d, wet granulated and dried. The granules, the remaining maize starch and the magnesium stearate are screened and mixed together. The e is pressed into tablets of suitable shape and size.

B) Tablets per tablet active substance (la) or (lb) 80 mg lactose 55 mg maize starch 190 mg microcrystalline cellulose 35 mg polyvinylpyrrolidone 15 mg sodium carboxymethyl starch 23 mg magnesium stearate 2 mg 2 400 mg The finely ground active substance, some of the corn , lactose, microcrystalline cellulose and polyvinylpyrrolidone are mixed together, the mixture is screened and worked 1O with the remaining corn starch and water to form a granulate which is dried and ed.

The sodium carboxymethyl starch and the ium stearate are added and mixed in and the mixture is compressed to form tablets of a suitable size.

C) e solution active substance (la) or (lb) 50 mg sodium chloride 50 mg water for in]. 5 ml 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 the solution ic. The resulting solution is filtered to remove pyrogens and the filtrate is transferred under aseptic conditions into ampoules which are then sterilized and heat-sealed. The ampoules contain 5 mg, 25 mg and 50 mg of active substance.

D) Metering aerosol active substance (la) or (lb) 0.005 sorbitan trioleate 0.1 monofluorotrichloromethane and TG134a : T6227 2:1 ad 100 The suspension is transferred into a conventional aerosol ner with metering valve.

Preferably 50 ul sion are released on each actuation. The active substance may also be released in higher doses if desired (e.g. 0.02 wt.-%). 2012/050830 E) Solutions (in mg/100ml) active substance (la) or (lb) 333.3 mg benzalkonium chloride 10.0 mg EDTA 50.0 mg HCI (1N) ad pH 2.4 This solution can be prepared in the usual way. 1O F) lnhalable powder active substance (la) or (lb) 12 ug lactose monohydrate ad 25 mg The inhalable powder is ed in the usual way by mixing the individual ingredients.

The following examples serve to further illustrate the present invention without cting its scope.

EXAMPLES |. HPLC METHODS Method A: HPLC-MS: t 1100 Mobile phase: A: water with 0.032% NH4OH B: methanol time in min %A %B flowrate in ml/min 0.00 95 5 1.50 3O 2.00 0 100 1.50 2.50 0 100 1.50 2.60 95 5 1.50 2.90 95 5 1.50 Column: XBridge C18, 3,5um, 4,6 x 50mm (column temperature: constant at 40°C).

Detection by diode array detector at 210-500 nm wavelength.

Method B: HPLC-MS: Waters ZQ MS, Alliance 2690/2695 HPLC, 2996 diode array detector Mobile Phase: A: water with 0.1% TFA B: methanol timeinmin %A %B flow rate in ml/min 0.00 95 5 4.0 0.20 95 5 4.0 1.60 0 100 4.0 2.10 0 100 4.0 : Waters XBridge C18, 4.6 x 20 mm, 3.5 um (column temperature: constant at 40°C).

Detection by diode array detector at 210-400 nm ngth.

Method C: HPLC: Waters Acquity with DA and MS or Mobile Phase: A: water with 0.1% TFA B: methanol time in min %A %B flowrate in ml/min 0.00 99 1 1.5 0.05 99 1 1.5 1.05 0 100 1.5 1.20 0 100 1.5 Column: Waters XBridge BEH C18, 2.1 x 30 mm, 1.7 um (column temperature: constant at 60°C). Detection by diode array detector at 210-400 nm wavelength.

Method D: HPLC: Waters Acquity with DA and MS detector Mobile Phase: A: water with 0.13% TFA B: methanol with 0.05% TFA time in min %A %B flow rate in ml/min 0.00 99 1 1.3 0.05 99 1 1.3 1.05 0 100 1.3 1.20 0 100 1.3 Column: Waters XBridge BEH C18, 2.1 x 30 mm, 1.7 pm (column temperature: constant at 60°C). Detection by diode array detector at 210-400 nm wavelength.

Method E: HPLC: Waters y with DA and MS detector Mobile Phase: A: water with 0.1% TFA B: methanol time in min %A %B flowrate in ml/min 0.00 95 5 1.4 0.05 95 5 1.4 1.00 0 100 1.4 1.10 0 100 1.4 Column: Waters XBridge C18, 2.1 x 30 mm, 2.5 pm (column temperature: constant at 60°C).

Detection by diode array detector at 210-400 nm wavelength.

Method F: HPLC: Agilent 1200 with DA and MS detector Mobile Phase: A: water with 0.1 % TFA B: methanol time in min %A %B flowrate in ml/min 0.00 95 5 2.0 0.20 95 5 2.0 1.50 0 100 2.0 1.55 0 100 2.6 1.75 0 100 2.6 Column: Waters XBridge C18, 3 x 30 mm, 2.5 pm n temperature: nt at 60°C).

Detection by diode array detector at 210-400 nm wavelength.

Method G: HPLC-MS: Waters Alliance with DA and MS detector Mobile Phase: A: water with 0.1% NH3 B: methanol with 0.1% NH3 time in min %A %B flowrate in ml/min 0.00 95 5 4.0 0.20 95 5 4.0 1.50 0 100 4.0 1.75 0 100 4.0 Column: Waters XBridge C18, 4.6 x 30 mm, 3.5 pm n temperature: constant at 60°C).

Detection by diode array detector at 210-400 nm wavelength.

Method H: HPLC-MS: Waters Alliance with DA and MS detector Mobile Phase: A: water with 0.1% TFA B: methanol time in min %A %B flowrate in ml/min 0.00 95 5 4.8 1.60 0 100 4.8 1.85 0 100 4.8 1.90 95 5 4.8 Column: Waters SunFire C18, 4.6 x 30 mm, 3.5 pm (column temperature: nt at 60°C).

Detection by diode array detector at 210-400 nm wavelength.

Method J: HPLC: Waters Acquity with DA and MS detector Mobile Phase: A: water with 0.13 % TFA B: ol with 0.05 % TFA time in min %A %B flowrate in ml/min 0.00 99 1 1.2 0.15 99 1 1.2 1.10 0 100 1.2 1.25 0 100 1.2 Column: Waters Sunfire C18, 2.1 x 30 mm, 2.5 pm (column ature: constant at 60°C).

Detection by diode array detector at 210-400 nm wavelength.

Method K: HPLC-MS: Waters Alliance with DA and MS detector Mobile Phase: A: water with 0.1% TFA B: methanol with 0.1% TFA timeinmin %A %B flow rate in ml/min 0.00 95 5 4.0 0.20 95 5 4.0 1.50 0 100 4.0 1.75 0 100 4.0 1.85 95 5 4.0 Column: Waters XBridge C18, 4.6 x 30 mm, 3.5 um (column temperature: constant at 60°C).

Detection by diode array or at 210-400 nm wavelength.

Method L: HPLC-MS: Waters Alliance with DA and MS detector Mobile Phase: A: water with 0.1% TFA B: methanol time in min %A %B flow rate in ml/min 0.00 95 5 4.8 1.60 0 100 4.8 1.85 0 100 4.8 1.90 95 5 4.8 Column: Waters XBridge C18, 4.6 x 30 mm, 3.5 um (column temperature: nt at 60°C).

Detection by diode array detector at 210-400 nm ngth.

Method M: HPLC-MS: Waters 2695 HPLC, ZQ MS, 2996 diode array detector, 2695 autosampler Mobile Phase: A: water with 0.1% NH3 B: methanol with 0.1% NH3 time in min %A %B flow rate in ml/min 0.00 95 5 4.0 0.20 95 5 4.0 1.50 0 100 4.0 1.75 0 100 4.0 Column: Waters XBridge C18, 4.6 x 30 mm, 3.5 pm n temperature: constant at 60°C). ion by diode array detector at 210-400 nm wavelength.

Method N: HPLC: Waters Acquity with DA and MS detector Mobile Phase: A: water with 0.13% TFA B: methanol with 0.08% TFA time in min %A %B flowrate in ml/min 0.00 99 1 1.3 0.05 99 1 1.3 0.35 0 100 1.3 0.50 0 100 1.3 Column: Waters XBridge BEH C18, 2.1 x 30 mm, 1.7 pm (column temperature: constant at 60°C). Detection by diode array detector at 210-400 nm wavelength.

Method 0: HPLC: t 1200 with DA and MS or Mobile Phase: A: water with 0.1 % TFA B: methanol time in min %A %B flowrate in ml/min 0.00 95 5 1.9 0.20 95 5 1.9 1.55 0 100 1.9 1.60 0 100 2.4 1.80 0 100 2.4 Column: Waters XBridge C18, 3 x 30 mm, 2.5 pm (column temperature: constant at 60°C).

Detection by diode array detector at 210-400 nm wavelength.

||. SYNTHESIS OF STARTING COMPOUNDS A) Synthesis of Amines 1.) [1-(4-Aminobenzyl)-3,5-dimethyl-1H-pyrazolyl]acetic acid methyl ester a) To a solution of (3,5-dimethyl-1H-pyrazolyl)-acetic acid methyl ester (3.90 g, 23 mmol) and 4-nitrobenzyl bromide (4.60 g, 20.7 mmol) in acetonitrile is added K2C03 (2.76 g, 19.9 mmol) and the mixture is stirred for one hour at room temperature. The reaction e is poured into water and extracted twice with ethyl acetate. The organic phase is dried over 1O MgSO4 and evaporated under d re. To yield 7.50 g of [3,5-Dimethyl(4-nitro- )-1H-pyrazolyl]—acetic acid methyl ester (ESI mass spectrum: [M+H]+ = 304). b) To a on of [3,5-dimethyl(4-nitro-benzyl)-1H-pyrazolyl]—acetic acid methyl ester (3.90 g, 10.3 mmol) in methanol (10 mL) is added 10 % palladium on charcoal (500 mg) and the mixture is hydrogenated. The catalyst is filtered off and the te is concentrated under reduced pressure. The mixture is purified via preparative reversed phase HPLC (gradient of methanol in water + 0.1 % NHs) to yield 1.18 g of the title compound (ESI mass spectrum: [M+H]+ = 274; Retention time HPLC: 2.13 min (method A)) 2.) [1-(4-Aminochloro-benzyl)-3,5-dimethyl-1H-pyrazolyl]acetic acid ethyl ester a) To a solution of (3,5-dimethyl-1H-pyrazolyl)-acetic acid ethyl ester (1.40 g, 7.7 mmol) and 2-chloronitrobenzyl bromide (4.60 g, 20.7 mmol) in 20 mL acetonitrile is added K2C03 (1.59 g, 11.5 mmol) and the mixture is stirred for 48 hours at room temperature. The solvent is removed by evaporation and the residue is dissolved in dichloromethane/water. After extraction with dichloromethane the organic layer is dried over NaZSO4 and evaporated under reduced pressure to yield 2.79 g of [3,5-dimethyl(2-chloronitro-benzyl)-1H-pyrazolyl]- acetic acid ethyl ester (ESI mass spectrum: [M+H]+ = 352; Retention time: 1.95 min (method A). b) To a on [3,5-dimethyl(2-chloronitro-benzyl)-1H-pyrazolyl]acetic acid ethyl ester (2.39 g, 6.8 mmol) in methanol (40 mL) is added Raney nickel (250 mg) and the mixture is hydrogenated. The catalyst is filtered off and the filtrate is concentrated under reduced pressure to yield 1.18 g of the title compound (ESI mass spectrum: [M+H]+ = 322; Retention time HPLC: 1.76 min (method A)). 3.) [1-(4-Amino-benzyl)—3,5-diethyl-1H-pyrazolyl]-acetic acid ethyl ester a) To a solution of (3,5-diethyl-1H-pyrazolyl)-acetic acid ethyl ester (10.95 g, 52.1 mmol) and 4-nitrobenzyl bromide (14.625 g, 68 mmol) in acetonitrile (110 mL) is added K2C03 (10.80 g, 78.1 mmol) and the mixture is stirred for 48 hours at room temperature. The 1O reaction e is poured into water and extracted twice with ethyl acetate. The c phase is dried over MgSO4 and ated under reduced pressure. The residue is ed by MPLC with ethyl acetate/cyclohexane to yield 12.50 g [3,5-diethyl(4-nitro-benzyl)-1H- pyrazolyl]acetic acid ethyl ester (ESI mass spectrum: [M+H]+ = 346; Retention time HPLC: 1.42 min (method B)). b) To a solution of [3,5-diethyl(4-nitro-benzyl)—1H-pyrazolyl]acetic acid ethyl ester (6.66 g, 19.3 mmol) in methanol (500 mL) is added Raney nickel (500 mg) and the mixture is hydrogenated at 50 psi and room temperature. The catalyst is filtered off and the te is concentrated under reduced pressure to yield 4.38 g of the title nd (ESI mass spectrum: [M+H]+ = 316; Retention time HPLC: 1.09 min (method B)). 4.) [1-(4-Aminofluorobenzyl)-3,5-dimethyl-1H-pyrazolyl]acetic acid methyl ester a) To a solution of (3,5-dimethyl-1H-pyrazolyl)—acetic acid methyl ester (10 g, 48.9 mmol) and 2-fluoronitrobenzyl bromide (11.5 g, 49.1 mmol) in acetonitrile (150 mL) is added K2C03 (10.1 g, 73.3 mmol) and the mixture is stirred for 48 hours at 60°C. The solvent is removed by evaporation and the residue is dissolved in dichloromethane/water. After extraction with romethane the organic layer is dried over NaZSO4 and evaporated under 3O reduced pressure. The residue is purified by MPLC (cyclohexane/diethyl ether 7:3) to yield 13 g of [3,5-dimethyl(2-fluoronitro-benzyl)—1H-pyrazolyl]acetic acid methyl ester (ESI mass spectrum: [M+H]+ = 322; Retention time (HPLC): 0.85 min (method C)). b) To a solution of [3,5-dimethyl(2-fluoronitro-benzyl)-1H-pyrazolyl]acetic acid methyl ester (13 g, 40.4 mmol) in ol (250 mL) is added Raney nickel (6 g) and the mixture is hydrogenated at 50 psi and 50°C. The st is filtered off and the filtrate is concentrated under d pressure. The mixture is purified by crystallization in diisopropyl ether to yield 12.8 g of the title compound (ESI mass spectrum: [M+H]+ = 292; Retention time HPLC: 0.61 min (method C)).

.) Aminochloro-benzyl)-3,5-dimethyl-1H-pyrazolyl]—acetic acid tert-butyl ester a) To a solution of (3,5-dimethyl-1H-pyrazolyl)—acetic acid utyl ester (2.6 g, 12.4 1O mmol, preparation according to WO2007/141267 by using 2,4-pentanedione instead of 3,5- heptanedione) and ronitrobenzyl bromide (3.11 g, 12.4 mmol) in acetonitrile (30 mL) is added K2C03 (2.575 g, 18.6 mmol) and the mixture is stirred for 48 hours at room temperature and after that 2 hours at 60°C. The solid is filtered off and the solvent is removed by evaporation. The residue is dissolved in dichloromethane/water. After extraction with dichloromethane the organic layer is dried over MgSO4 and evaporated under reduced pressure to yield 4.4 g of [3,5-dimethyl(2-chloronitrobenzyl)-1H-pyrazolyl]acetic acid tert-butyl ester (ESI mass spectrum: [M+H]+ = 380). b) To a solution of [3,5-dimethyl(2-chloronitrobenzyl)-1H-pyrazolyl]acetic acid tert- butyl ester (4.40 g, 11.6 mmol) in methanol (80 mL) is added Raney nickel (440 mg) and the mixture is hydrogenated at 50 psi and room temperature for 12 hours. The st is filtered off and the filtrate is concentrated under reduced pressure to yield 2.4 g of the title compound (ESI mass spectrum: [M+H]+ = 350; Retention time HPLC: 0.76 min d D)). 6.) [1-(4-Aminobenzyl)—3,5-dimethyl-1H-pyrazolyl]acetic acid tert-butyl ester The title compound (ESI mass spectrum: [M+H]+ = 316; Retention time HPLC: 0.65 min (method E)) is synthesized in analogy to procedure ||.A.5 by using 4-nitrobenzylbromide 3O instead of ronitrobenzylbromide. 7.) [1-(4-Aminofluorobenzyl)-3,5-dimethyl-1H-pyrazolyl]acetic acid tert-butyl ester a) To a solution of (3,5-dimethyl-1H-pyrazolyl)acetic acid tert-butyl ester (10 g, 47.6 mmol, preparation according to WO2007/141267 by using 2,4-pentanedione instead of 3,5- heptanedione) and 2-fluoronitrobenzyl bromide (11.2 g, 47.9 mmol) in itrile (150 mL) is added K2C03 (6.615 g, 47.9 mmol) and the mixture is stirred for 24 hours at room temperature. The solid is filtered off and the solvent is removed by evaporation. The residue is dissolved in dichloromethane/water. After extraction with dichloromethane the c layer is dried over MgSO4 and evaporated under reduced pressure. The residue is purified by MPLC (cyclohexane/ethyl acetate 7:3, silicagel 60) to yield 13.6 g of [3,5-dimethyl(2- fluoronitrobenzyl)-1H-pyrazolyl]acetic acid tert-butyl ester (ESI mass spectrum: [M+H]+ = 364 TLC: Rf = 0.23 (cyclohexan/ethyl acetate 7:3, solicagel 60 F254)). 1O b) To a solution of [3,5-dimethyl(2-fluoronitrobenzyl)—1H-pyrazolyl]acetic acid tertbutyl ester (13.6 g, 37.4 mmol) in methanol (250 mL) is added Raney nickel (6 g) and the mixture is hydrogenated at 50 psi and 50°C for 12 hours. The catalyst is filtered off and the filtrate is trated under reduced pressure to yield 11.6 g of the tiltle compound (ESI mass spectrum: [M+H]+ = 334; TLC: Rf = 0.53 (dichloromethane/methanol 95:5, gel 60 F254)).

B) Synthesis of carboxylic acids 1.) 1-Ethylfluoro-1H-indolecarboxylic acid a) To a solution of roindolethyl ester (200 mg, 0.965 mmol) in dimethylsulfoxide (6 mL) is added potassium tert-butylate (108 mg, 0.965 mmol) and the mixture is stirred at 50°C for 30 minutes. After cooling to room ature thane (0.081 mL, 1.06 mmol) is added and the mixture is stirred at room temperature for 2.5 hours. With cooling water is added and the mixture is extracted with ethyl acetate. The organic layer is washed with water and saturated aqueous NaCl solution, dried over MgSO4 and the solvent is evaporated in vacuo to yield 200 mg of lfluoro-1H-indolecarboxylic acid ethyl ether (ESI mass 3O spectrum: [M+H]+ = 236). b) To a solution of lfluoro-1H-indolecarboxylic acid ethyl ether (200 mg, 0.85 mmol) in dioxan (2 mL) is added an aqueous solution of NaOH (1 M, 1.7 mL) and the mixture is stirred at 60°C for 1 hour. After evaporation of the solvent the residue was suspended in a few water and neutralized with acetic acid (2 M). The precipitate is filtered, washed with water and dried to yield 140 mg of the title compound (ESI mass spectrum: [M+H]+ = 208; Retention time HPLC: 1.21 min (method F)).

The following indole carboxylic acids are ed likewise in anlaogy to this method: 1-Benzyl-1H-indolecarboxylic acid (ESI mass spectrum: [M+H]+ = 252 Retention time HPLC: 0.84 min (method E)); 1O 1-Butyl-1H-indolecarboxylic acid (ESI mass spectrum: [M+H]+ = 218); -Fluoropropyl-1H-indolecarboxylic acid (ESI mass spectrum: [M+H]+ = 222); 1-Butylfluoro-1H-indolecarboxylic acid (ESI mass um: [M+H]+ = 236); 1-Propyl-1H-indolecarboxylic acid (ESI mass spectrum: [M+H]+ = 204); 1-Ethylfluoro-1H-indolecarboxylic acid (ESI mass spectrum: [M+H]+ = 208; Retention time HPLC: 0.80 min (method E); 1-Ethylfluoro-1H-indolecarboxylic acid (ESI mass spectrum: [M+H]' =206; Retention time HPLC: 0.71 min (method E)); 6-Fluoropropyl-1H-indolecarboxylic acid (ESI mass spectrum: [M-H]' = 220; Retention time HPLC: 0.77 min (method E)). 2.) 3-Ethylfluorobenzofurancarboxylic acid a) To a solution of 5-fluorohydroxy-propiophenone (0.9 g, 5.2 mmol) and tert-butyl 3O bromoacetate (0.9 mL, 6.1 mmol) in acetonitrile (15 mL) is added K2C03 (1.08 g, 7.8 mmol) and the mixture is refluxed for 3 hours. After cooling to room temperature the mixture is poured into water and extracted with ethyl acetate. The c layer is washed twice with water, dried over MgSO4 and the t is evaporated in vacuo to yield 1.47 g of (4-fluoro nylphenoxy)acetic acid tert-butyl ester (ESI mass spectrum: [M+H]+ = 283; Retention time HPLC: 0.88 min (method D)). b) To a solution of (4-fluoropropionylphenoxy)acetic acid tert-butyl ester (1.47 g, 5.2 mmol) in dry ethanol (20 mL) is added on of sodium methanolat in methanol (5.4 M, 20 mL) and the mixture is stirred at 80°C for 12 hours. After cooling to room temperature and evaporation of the solvent the residue was dissolved in water and acidified with hydrochloric acid (1 M). The precipitate is filtered, washed with water and dried to yield 440 mg of the title compound (ESI mass spectrum: [M-H]' = 207; ion time HPLC: 0.87 min (method 6)).

The following benzofuran carboxylic acids are prepared likewise in analogy to this method: 7-Chloromethylbenzofurancarboxylic acid (ESI mass spectrum: [M-H]' = 209; Retention time HPLC: 1.28 min (method H)); -Fluoropropylbenzofurancarboxylic acid (ESI mass spectrum: [M-H]' = 221; Retention time HPLC: 1.01 min (method 6)); 3-Ethylfluorobenzofurancarboxylic acid (ESI mass um: [M-H]' = 207; Retention time HPLC: 0.77 min (method E)); 3-Ethyl-5,7-difluorobenzofurancarboxylic acid (ESI mass spectrum: [M-H]' = 225; Retention time HPLC: 1.32 min (method L)); 6-Chlorobenzofurancarboxylic acid (ESI mass spectrum: [M-H]' = 195; ion time HPLC: 1.72 min (method H)). lll) SYNTHESIS OF NDS (la) and (lb) Compound 1: (1-(2-fluoro[(1H-indolecarbonyl)amino]benzyl)-3,5-dimethyl-1H-pyrazol 3O tic acid (Coupling method C1): a) To a solution of indolecarboxylic acid (80 mg, 0.50 mmol) in N,N-dimethylformamide (1.5 mL) are added TBTU (139 mg, 0.43 mmol) and N,N-diisopropyl amine (0.126 mL, 0.74 mmol). Subsequently [1-(4-aminofluorobenzyl)-3,5-dimethyl-1H-pyrazolyl]acetic acid methyl ester (120 mg, 0.41 mmol) is added. The mixture is stirred at room temperature for 12 hours. After that an aqueous solution of K2C03 (2 M, 0.5 mL) is added. The obtained mixture is flushed through A1203 with dichloromethane/methanol (9:1, 10 mL). The solvent is d in vacuo to yield 82.3 mg of (1-(2-fluoro[(1H-indolecarbonyl)amino]benzyl)-3,5-dimethyl- 1H-pyrazolyl)acetic acid methyl ester (ESI mass spectrum: [M+H]+ = 435; Retention time HPLC: 0.41 min (method N). b) (1-(2-Fluoro[(1H-indolecarbonyl)amino]benzyl)-3,5-dimethyl-1H-pyrazolyl)acetic acid methyl ester (82 mg, 0.19 mmol) is dissolved in ol (0.5 mL). An aqueous solution of NaOH (4M, 0.3 mL) is added and the mixture is stirred at room temperature for 2 hours. 1O The resulting mixture is diluted with methanol/water, the solid is filtered off and after ation the residue is purified by HPLC (Gilson, XRS Pursuit, methanol/HZO+0.1 % conc. NH3). The fractions containing the title nd are concentrated and lyophilized to yield 15 mg of the title compound (ESI mass spectrum: [M+H]+ = 421; Retention time HPLC: 1.04 min (method 6)). 1H-NMR 400 MHz (DMSO-d6): 5 [ppm] = 2.03 (s, 3H), 2.14 (s, 3H), 2.52 (s, 3H), 3.21 (s, 2H), .16 (s, 2H), 6.99 (t, 1H), 7.08 (t, 1H), 7.23 (t, 1H), 7.39 (s, 1H), 7.48 (m, 2H), 7.66 (d, 1H), 7.79 (d, 1H), 10.45 (s, 1H), 11.79 (br., 1H).

Compounds 2 and 3 of table 1 below have likewise been prepared in analogy to ng method C1 using le starting amines and carboxylic acids.

Compound 4: [(5-Fluoromethylbenzofurancarbonyl)amino]benzyl}-3,5-dimethyl- 1H-pyrazolyl)acetic acid (Coupling method C2): a) To a solution of [1-(4-aminobenzyl)-3,5-dimethyl-1H-pyrazolyl]acetic acid methyl ester (400 mg, 1.46 mmol) in 5 mL dichloromethane are added diisopropylethylamine (1.5 mL, 8.8 mmol) and 5-fluoromethylbenzofurancarboxylic acid (369 mg, 1.9 mmol). After stirring at room temperature for 10 minutes a 50 % solution of 1-propylphosphonic acid cyclic 3O ide in ethyl acetate (1.725 mL, 2.93 mmol) is added with cooling and the mixture is stirred at room temperature for 12 hours. The solvent is evaporated in vacuo and the residue is purified by MPLC (dichloromethane/methanol 98:2) to yield 410 mg of (1-{4-[(5-fluoro methylbenzofurancarbonyl)amino]benzyl}-3,5-dimethyl-1H-pyrazolyl)acetic acid methyl ester (ESI mass spectrum: [M+H]+ = 450; TLC: Rf = 0.56 (dichloromethane/methanol 95:5, silicagel 60 F254)). b) To a solution of (1-{4-[(5-f|uoromethylbenzofurancarbonyl)amino]benzyl}-3,5- dimethyl-1H-pyrazolyl)acetic acid methyl ester (410 mg, 0.91 mmol) in dioxan/water (10 mL/10 mL) is added 1 M NaOH (2.3 mL) and the mixture is d at room temperature for 24 hours. The e is diluted with water and ied with hloric acid (1 M, 3.25 mL). The precipitate is filtered, washed with water and dried to yield 338 mg of the title compound (ESI mass um: [M+H]+ = 436; Retention time HPLC: 0.85 min d D). 1H-NMR 400 MHz (DMSO-d6): 6 [ppm] = 2.05 (s, 3H), 2.10 (s, 3H), 2.52 (s, 3H), 3.24 (s, 2H), 1O 5.16 (s, 2H), 7.10 (d, 2H), 7.37 (t, 1H), 7.66 (m, 2H), 7.75 (d, 2H), 10.40 (s, 1H), 12.05 (br., 1H).

Compounds 5 to 26 and 57 to 59 of tables 1 and 2 below have likewise been prepared in analogy to coupling method C2 using suitable starting amines and carboxylic acids.

Compound 27: (1-{2-Fluoro[(5-fluoromethylbenzofurancarbonyl)amino]benzyl}-3,5- dimethyl-1H-pyrazolyl)-acetic acid (Coupling method C3): a) To a solution of 5-fluoromethylbenzofurancarboxylic acid (194 mg, 1 mmol) in 5 mL dimethylformamide is added diisopropylethylamine (0.516 mL, 3 mmol) and HATU (399 mg, 1.05 mmol) is added. After ng at room temperature for 25 minutes dimethylformamide (1 mL) and then intermediate [1-(4-aminofluorobenzyl)-3,5-dimethyl- 1H-pyrazolyl]acetic acid methyl ester (291 mg, 1 mmol) is added. Subsequently diisopropylethylamine (0.344 mL, 2 mmol) and dimethylformamide (2 mL) is added, and the mixture is stirred at room temperature for 48 hours. Then ethyl actetate and water are added and the precipitate is filtered off. The organic layer is extracted twice with acetic acid (1 N), once with an aqueous solution of NaHCO3 (5 % by weight) and twice with water, dried over MgSO4. The solvent is removed by evaporation in vacuo. The residue is prurified by MPLC (dichloromethane/methanol 96:4) to yield 120 mg of (1-(2-fluoro[(5-fluoro 3O methylbenzofurancarbonyl)-amino]-benzyl)-3,5-dimethyl-1H-pyrazolyl)-acetic acid methyl ester (ESI mass spectrum: [M+H]+ = 468; TLC: Rf = 0.72 (dichloromethane/methanol 9:1, silicagel 60 F254)). b) To a solution of (1-(2-f|uoro[(5-fluoromethylbenzofurancarbonyl)-amino]-benzyl)- 3,5-dimethyl-1H-pyrazolyl)-acetic acid methyl ester (119 mg, 0.26 mmol) in dioxan/water (7 mL/7 mL) is added an aqueous solution of NaOH (1 M, 2.3 mL) and the mixture is stirred at room temperature for 12 hours and at 60°C for 2 hours. The mixture is diluted with water, acidified with hydrochloric acid (1 M, 1 mL) and extracted with ethyl acetate. The organic layer is dried over MgSO4, the solvent evaporated in vacuo, the residue is llized with diisopropylether and the precipitate is isolated by filtration to yield 69 mg of the title compound (ESI mass spectrum: [M+H]+ = 454; Retention time HPLC: 0.90 min (method D)). 1H-NMR 400 MHz (DMSO-d6): 6 [ppm] = 2.03 (s, 3H), 2.14 (s, 3H), 2.57 (s, 3H), 3.28 (s, 2H), .18 (s, 2H), 6.96 (t, 1H), 7.37 (t, 1H), 7.54 (d, 1H), 7.66 (m, 2H), 7.79 (d, 1H), 10.60 (s, 1H), 1O 1207 (br., 1H).

Compounds 28 to 31 of table 1 below have likewise been prepared in analogy to coupling method C3 using suitable starting amines and carboxylic acids.

Compounds 32: (1-(4-[(1-Ethylfluoro-1H-indolecarbonyl)amino]fluorobenzyl)-3,5- dimethyl-1H-pyrazolyl)acetic acid (Coupling method C4): a) To a solution of 1-ethylfluoro-1H-indolecarboxylic acid (140 mg, 0.68 mmol) in 6 mL dichloromethane is added oxalyl chloride (0.094 mL, 0.68 mmol) and a drop dimethylformamide. After stirring at room temperature for 1 hour the solvent is removed by evaporation in vacuo. The residue is dissolved in dichloromethane (5 mL) and dropped to a solution of [1-(4-aminofluorobenzyl)-3,5-dimethyl-1H-pyrazolyl]acetic acid methyl ester (177 mg, 0.61 mmol) and ropylethylamine (0.23 mL, 1.35 mmol) in dichloromethane (5 mL). After addition of thylaminopyridine (8.255 mg, 0.069 mmol) the solution is d at room temperature for 12 hours. The solution is extracted twice with hydrchloric acid (1 M), twice with water, twice with an aqueous solution of NaOH (1 M) and twice with water. The organic layer is dried over MgSO4, ed and the t is ated in vacuo. The residue is purified by MPLC (dichloromethane/methanol 95:5) to yield 160 mg of (1-(4-[(1- ethylfluoro-1H-indolecarbonyl)amino]fluorobenzyl)-3,5-dimethyl-1H-pyrazol 3O yl)acetic acid methyl ester (ESI mass spectrum: [M+H]+ = 481; Retention time HPLC: 0.93 min (method D)). b) To a solution of (1-(4-[(1-ethylfluoro-1H-indolecarbonyl)amino]fluorobenzyl)-3,5- yl-1H-pyrazolyl)acetic acid methyl ester (160 mg, 0.33 mmol) in dioxan (2mL) is added an aqueous solutio of NaOH (1 M, 0.66 mL) and the mixture is stirred at 60°C for 1 hour. The solvent is ated in vacuo, and the e is suspended in water and treated with acetic acid (2 M). The precipitate is dryfreezed, dissolved in ol and few dimethylformamide, and the product is precipitated with a few water, filtered and dried to yield 137 mg of the title compound (ESI mass spectrum: [M+H]+ = 467; Retention time HPLC: 0.89 min (method D)). 1H-NMR 400 MHz (DMSO-d6): 6 [ppm] = 1.30 (t, 6H), 2.04 (s, 3H), 2.13 (s, 3H), 3.25 (s, 2H), 4.55 (q, 4H), 5.16 (s, 2H), 6.97 (t, 1H), 7.17 (t, 1H), 7.29 (s, 1H), 7.47 (m, 1H), 7.62 (dd, 1H), 7.74 (d, 1H), 10.52 (s, 1H). nd 33: (1-(4-[(7-Chloromethylbenzofurancarbonyl)amino]benzyl)-3,5-dimethyl- 1H-pyrazolyl)acetic acid (Coupling method C4): a) To a solution of 7-chloromethylbenzofurancarboxylic acid (185 mg, 0.88 mmol) in 6 mL dichloromethane is added oxalyl chloride (0.123 mL, 1.14 mmol) and a drop of dimethylformamide. After stirring at room temperature for 1 hour the solvent is d by evaporation in vacuo. The residue is dissolved in dichloromethane (5 mL) and dropped to a solution of [1-(4-aminobenzyl)-3,5-dimethyl-1H-pyrazolyl]acetic acid tert-butyl ester (428 mg, 1 mmol) in form of the toluenesulphonate salt and diisopropylethylamine (0.39 mL, 2.27 mmol) in dichloromethane (5 mL). After addition of 4-dimethylaminopyridine (11 mg, 0.09 mmol) the solution is stirred at room temperature for 12 hours. The solution is extracted twice with hydrochloric acid (1 M), twice with water, twice with an aqueous solution of NaOH (1 M) and twice with water. The organic layer is dried over MgSO4, filtered and the solvent is evaporated in vacuo to yield 426 mg of (1-(4-[(7-chloromethyl-benzofuran carbonyl)amino]benzyl)-3,5-dimethyl-1H-pyrazol-4—yl)acetic acid tert-butyl ester (ESI mass spectrum: [M+H]+ = 508; Retention time HPLC: 1.60 min (method H)). b) To a solution of (1-(4-[(7-chloromethyl-benzofurancarbonyl)amino]benzyl)-3,5- dimethyl-1H-pyrazolyl)acetic acid tert-butyl ester (426 mg, 0.84 mmol) in romethane 3O (10mL) is added trifluoroacetic acid (400 mL, 5.2 mmol) and the mixture is stirred at room temperature for 3 days. The solvent is evaporated in vacuo, and the residue is suspended in water and treated with diethylether and the precipitating t is filtered off to yield 174 mg of the title compound (ESI mass spectrum: [M+H]+ = 452; Retention time HPLC: 1.39 min (method J)). 1H-NMR 400 MHz (DMSO-d6): 5 [ppm] = 2.07 (s, 3H), 2.14 (s, 3H), 2.57 (s, 3H), 3.29 (s, 2H), 5.17 (s, 2H), 7.12 (d, 2H), 7.38 (t, 1H), 7.62 (d, 1H), 7.74 (d, 2H), 7.76 (d, 1H), 10.33 (s, 1H). nd 48: (1-(4-[(3-Ethylfluorobenzofurancarbonyl)amino]benzyl)-3,5-dimethyl-1H- pyrazolyl)-acetic acid (Coupling method C4) a) To a solution of 3-ethylfluorobenzofurancarboxylic acid (450 mg, 2.16 mmol) in 10 mL dichloromethane is added oxalyl de (0.335 mL, 3.1 mmol) and a drop 1O dimethylformamide. After stirring at room temperature for 1 hour the solvent is removed by evaporation in vacuo. The residue is dissolved in dichloromethane (10 mL) and dropped to a on of [1-(4-aminobenzyl)-3,5-dimethyl-1H-pyrazolyl]acetic acid tert-butyl ester (1.054 g, 2.16 mmol) in the form of the 4-toluenesulphonate salt and ropylethylamine (1.3 mL, 7.57 mmol) in dichloromethane (5 mL). After addition of 4-dimethylaminopyridine (26.4 mg, 0.216 mmol) the solution is stirred at room temperature for 12 hours. The solvent is evaporated in vacuo, dissolved in 100 mL ethyl acetate, and the solution is extracted twice with water, once with hydrochloric acid (0.5 M), once with water, once with an s solution of NaHCOs (5% by weight) and once with water. The organic layer is dried over MgSO4, filtered and the solvent is evaporated in vacuo. The residue is purified by MPLC (dichloromethane/methanol 98:2) to yield 150 mg of 1-(4-[(3-ethylfluorobenzofuran carbonyl)amino]benzyl)-3,5-dimethyl-1H-pyrazol-4—yl)-acetic acid tert-butyl ester (ESI mass spectrum: [M+H]+ = 506; Retention time HPLC: 1.02 min (method D)). b) To a solution of (3-ethylfluorobenzofurancarbonyl)amino]benzyl)-3,5-dimethyl- 1H-pyrazolyl)-acetic acid tert-butyl ester (150 mg, 0.30 mmol) in acetonitrile (25mL) is added montmorillonite KSF (300 mg) and the mixture is refluxed for 6 hours. The mixture is diluted to 400 mL with acetonitrile, refluxed for 5 s and filtered. The t is evaporated in vacuo and the residue is washed with dimethylformamide (300 mL). After filtration the solvent is removed by evaporation and the residue is treated with acetone (200 3O mL). After trituration the precipitate is filtered off and washed with acetone to yield 112 mg of the title compound (ESI mass spectrum: [M+H]+ = 450; Retention time HPLC: 0.85 min (method E)). 1H-NMR 400 MHz (DMSO-d6): 5 [ppm] = 1.21 (t, 6H), 2.04 (s, 3H), 2.11 (s, 3H), 3.09 (q, 4H), 3.27 (s, 2H), 5.16 (s, 2H), 7.09 (d, 2H), 7.33 (t, 1H), 7.67 (m, 2H), 7.76 (d, 2H), 10.39 (s, 1H).

Compounds 34 to 47 and 49 to 56 of table 1 below have likewise been prepared in analogy to coupling method C4 using suitable starting amines and ylic acids.

IV) BIOLOGICAL ASSAYS The compounds of formula (la) and (lb) according to the invention were tested using the following biological test methods to determine their ability to displace PGDZ from the CRTH2 receptor and for their ability to antagonise the functional effects of PGDZ at the CRTH2 1O receptor in a whole system.

PREPARATION OF HUMAN CRTH2 RECEPTOR NES AND RADIOLIGAND BINDING ASSAY The binding of CRTH2 antagonists is determined using membranes prepared from Chinese hamster ovary cells (CHO-K1 cells) ected with the human CRTH2 receptor (CHO-K1- hCRTH2 cells, Perkin Elmer, Cat No ESC). To produce cell membranes the CHO-K1- hCRTH2 cells are cultured in suspension in CHO SFMII medium supplemented with 400 ug/ml G418. The cells are harvested by centrifugation at 300 g for 10 min at room temperature. The cell pellet is resuspended in Phosphate Buffer Saline (PBS) including a protease inhibitor mix (Complete, Roche) and adjusted to a concentration of 10E7 cells/ml.

The CHO-K1-hCRTH2 cells are disrupted by nitrogen osition to obtain the membrane preparation. Cell debris is removed by fugation (500 g at 4°C, 30 min) and the supernatant is transferred into fresh tubes followed by a second centrifugation at 40000 g for 1 h at 4 °C to sediment the nes. The membranes are suspended in SPA tion buffer (50mM Tris HCI, 10 mM MgClz, 150 mM NaCl, 1 mM EDTA, pH 7.4) without bovine serum albumin, homogenized by passing through a single use needle (Terumo, 23Gx1”), and stored in aliquots at -80 °C. 3O The CRTH2 receptor binding assay is performed in a scintillation ity assay (SPA) format with the radioligand [3H]-PGD2 n Elmer, NET616000MC). CHO-K1-hCRTH2 cell membranes are again homogenized by passing through a single use needle (Terumo, 23Gx1”) and diluted in SPA incubation buffer in suitable trations (0.5 —10 ug protein/well). The SPA assay is set up in 96 well microtiter plates n Elmer, CatNo. 6005040) in SPA incubation buffer with a final volume of 200 pl per well and final concentration of 50 mM Tris-HCl, 10 mM MgClz, 150 mM NaCl, 1 mM EDTA pH 7.4, 0.1% bovine serum albumin). The SPA assay mixture contains 60 pl of the membrane suspension, 80 pl of Wheat Germ Agglutinin coated PVT beads (GE Healthcare, RPNQ-0001, 0.3 mg/well) 40 pl of [3H]-PGD2 diluted in SPA buffer to a final concentration of 1 nM (50 000 dpm) and 20 pl of the test compound (dissolved in ylsulfoxid). The SPA assay mixture is incubated for 3 h at room temperature. Bound radioactivity is determined with a scintillation counter (Micro Beta Trilux, Wallac).

The binding of [3H]-PGD2 to CHO-K1-hCRTH2 cell membranes is determined in the absence (total g, Bo) and presence (non-specific binding, NSB) of unlabelled PGD2 (1 uM, 1O Cayman Chemical, Cat No 12010) or a reference CRTH2 antagonist (10 uM CAY10471, Cayman Chemical, Cat No 10006735).

Determination of the ty of a test compound is calculated by subtraction of the non- ic binding (NSB) from the total binding (B0) or the binding in the presence of the test compound (B) at a given compound concentration. The NSB value is set to 100% inhibition.

The Bo-NSB value is set to 0% inhibition. % inhibition values were obtained at a d compound concentration, e.g. at 1 uM, % inhibition of the test compound was calculated by the formula 100-((B-NSB)*100/(Bo- NSB)). % inhibition values above 100% are founded by assay variance.

The dissociation constant Ki was calculated by iterative fitting of mental data obtained at several compound concentrations over a dose range from 0.1 to 30 000 nM using the law of mass action based m "easy sys" (Schittkowski, Num Math 68, 129-142 ).

CRTH2 CAMP FUNCTIONAL ASSAY PROTOCOL The assay is conducted in CHO-K1-hCRTH2 cells. ellular cAMP is generated by stimulating the cells with 10 uM Forskolin, an adenylate cyclase activator. PGD2 is added to activate the CRTH2 receptor which results in the ation of the forskolin-induced cAMP generation. Test compounds are tested for their ability to inhibit the PGD2-mediated attenuation of the Forskolin-induced cAMP generation in CHO-K1-hCRTH2 cells.

CHO-K1-hCRTH2 cells are cultured in roller bottles in CHO SFMII medium supplemented with 400ug/ml G418. The cells are harvested by centrifugation at 300 g for 10 min at room temperature. The cell pellet is washed and ded in PBS. The cells are ed to a final concentration of 4x10E6 cells/ ml.

Test compounds are diluted in dimethylsulfoxid and tested at several compound concentrations over a dose range from 0.1 to 3 000 nM.

The cAMP levels are determined by an AlphaScreen cAMP assay (Perkin Elmer CatNo. 6760625M) in 384 well optiplates (PerkinElmer, CatNo. 6007290) with a total assay volume of 50 pl. 10 ul of cells 0 cells per well) are incubated for 30 min at 37 °C with 10 ul of a stimulation mix containing a final concentration of 10uM lin, 30 nM PGD2, 0.5 mM IBMX, 5 mM HEPES, 1xHBSS , 0.1% BSA, adjusted to pH 7.4, and the test compound 1O at various concentrations. Thereafter, 30 ul of a lysis and ion mix is added containing SA donor beads, biotinylated cAMP, anti-cAMP acceptor beads, 0.3% -20, 5 mM HEPES, 0.1% BSA, adjusted to pH 7.4. After 2 h incubation time the AlphaScreen signal is read on an AlphaQuest—HTS instrument. The IC50 values are calculated by using the Prism software.

OTHER CRTH2 FUNCTIONAL ASSAY PROTOCOLS The ability of the tested compounds to antagonise the functional effects of PGD2 at the CRTH2 or may also be demonstrated by methodology known in the art, such as by a whole cell binding assay, a GTPgS assay, a BRET assay, an inositol phosphate accumulation assay, an CRTH2 cell surface expression assay, a Ca2+ influx assay, an ERK phosphorylation assay, an cell migration assay, an eosinophil shape change assay, a Th2 cell degranulation assay, or a basophil activation assay as described by Mathiesen et al., Mol Pharmacol. 2005, 68:393-402; Mimura et al., J. Pharmacol. Exp. Ther., 2005, 314:244-51; Sandham et al., Bioorg. Med. Chem. Lett., 2007,17:4347-50; Sandham Bioorg. Med. Chem.

Lett., 2009,19:4794-8; Crosignani et al., J Med Chem, 2008, 51:2227-43; Royer et al., Eur J Clin , 2008, 38:663-71; Boehme et al., lnt lmmunol, 2009, 21:621-32; Sugimoto et al., Pharmacol. Exp. Ther., 2003, 305:347-52; Monneret et al., J Pharmacol Exp Ther, 2005, 312:627-34; Xue etal., J. lmmunol., 2005,175:6531-6.

Cell lines for expressing the CRTH2 or include those naturally expressing the CRTH2 receptor, such as AML14.3D10 and NCl-H292 cells (Sawyer et al., Br. J. Pharmacol., 2002, 137:1163-72; Chiba et al., Int. Arch. Allergy. lmmunol., 2007,143 Suppl 1:23-7), those induced to express the CRTH2 receptor by the addition of chemicals, such as HL-60 or AML14.3D10 cells treated with, for example, butyric acid (Sawyer et al., Br. J. Pharmacol., 2002, 137:1163-72) or a cell line engineered to express a recombinant CRTH2 receptor, such as L1.2, CHO, HEK-293, K562 or CEM cells (Liu et al., Bioorg. Med. Chem. Lett., 2009,19:6840-4; Sugimoto et al., Pharmacol Exp Ther, 2003, 305:347-52; Hata et al., Mol.

Pharmacol., 2005, 67:640-7; Nagata et al., FEBS Lett, 1999, 459:195-9).

Finally, blood or tissue cells, for example human peripheral blood phils, isolated using methods as described by Hansel et al., J. lmmunol. Methods., 1991, 145,105-110, or human Th2 cells isolated and treated as described by Xue et al., J. lmmunol., 2005,175:6531-6, or human ils isolated and terized as described by Monneret et al., J. Pharmacol. 1O Exp. Ther., 2005, 312:627-34 can be utilized in such assays.

In particular, the nds of the present ion have activity in binding to the CRTH2 receptor in the aforementioned assays and inhibit the activation of CRTH2 by CRTH2 ligands. As used herein, "activity" is intended to mean a compound demonstrating an inhibition of 50% at 1 uM or higher in inhibition, or a K, value < 1 uM, when measured in the aforementioned assays. Such a result is indicative of the sic activity of the compounds as inhibitor of CRTH2 receptor activity. Antagonistic activities of ed compounds are shown in tables 1 and 2 below.

Table 1: Compounds of formula la” ('8") Cmpd Z Ry ; Ry ; Ry ; MS Retention Ki M;method G ' ' method B C6H5 methodD n-n -IiimethodD Cmpd Z Ry ; Ry ; Ry ; MS Retention Ki Ry“; Ry5 [M+H]+ Time [nM] -I-- -methodD H H method D -I-- --methodD -I--methodB H; H H; H I-- -H H hod D -I--methodK -In-WHH method B -fl-n F --Iii method D -I- ”‘0th _--I-CH3 F; H method E WO 01043 -HW-Cmpd Z Ry ; Ry ; Ry ; MS Retention Ki F; H method E H; H method C H; H method C H; H method D H; CI method J H; H; F method L F; H; F method L CI; H method M H; CI method J H; F method E C' H method M ; H method E ; H method E CH3 ; method E H; H method D ' method D ' method D ; method D H; H method D H; H method E H; H method F H; F method F H; H method F H; H method D CH3 H; H method 0 -flW-HCmpd MS ion [Ki] -I-H‘CHHZ' CH3 method D HHCHHH H H H CH3 H;H-H method-E H‘CHHH H --- CH3 ;HH methodE Table 2: Compounds of formula lb” R R3” ”0 fifi o R2 N / H z (|b") Ry5 [M+H] Time [n M] method B H; H; H; H; H 420

Claims (23)

We Claim:

1. A pyrazole nd of formula (Ia) or (Ib) or a pharmaceutically acceptable salt thereof, O R1 Rc HO Rd (R3) N O Ra Rb N Z R2 H Y5 Y1 Y4 (Ia) Y2 Y3 O R1 Rc HO Rd (R3) N O Ra Rb N Y1 R2 H Z (Ib) Y2 5 Y4 wherein Ra and Rb are ndently selected from en, hydroxy, halogen, C1-C6-alkyl, C1-C6 haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy and C3-C8-cycloalkyl, or Ra and Rb together with the carbon atom they are 10 bound to form may form a carbonyl group, or Ra and Rb together with the carbon atom they are bound to form a 3- to 8-membered ring, wherein said ring may contain 1 or 2 heteroatoms selected from O, N and S as ring member and wherein the ring members of said ring may optionally be independently substituted by hydroxy, halogen, 15 C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy and C3-C8-cycloalkyl; (9925931_1):KZA Rc and Rd are independently selected from hydrogen, hydroxy, halogen, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy and C3-C8-cycloalkyl, or Ra and Rb together with the carbon atom they are bound to form may form a yl group, or Ra and Rb together with 5 the carbon atom they are bound to form a 3- to 8-membered ring, wherein said ring may contain 1 or 2 heteroatoms selected from O, N and S as ring member and wherein the ring s of said ring may optionally be independently substituted by y, halogen, C1-C6-alkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy and 10 C3-C8-cycloalkyl; Y1, Y2, Y3, Y4 and Y5 are independently selected from N and CRy, wherein each Ry is independently selected from H, hydroxy, halogen, cyano, nitro, SF5, C(O)NRfRg, C1-C6-alkyl, hydroxy-C1-C6-alkyl, C1-C6-alkoxy-C1- C6-alkyl, C3- C8-cycloalkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1-C6- 15 alkoxy-C1-C6-alkoxy, C1-C6-haloalkoxy, C3-C8-cycloalkoxy, C1-C6- alkylamino, di-C1-C6-alkylamino, C1-C6-alkylsulfonyl, phenyl, phenoxy, 5- or 6-membered cyclyl and 5- or 6-membered heterocyclyloxy, wherein Rf and Rg are independently from each other ed from H, C1-C6-alkyl, C1-C6-haloalkyl, C3-C8-cycloalkyl, C3-C8- 20 cycloalkenyl and 5- or 6-membered cyclyl or Rf and Rg together with the nitrogen atom to which they are bound form a cyclic amine, which may comprise a further heteroatom selected from O, N and S as a ring member; Z is selected from O, S and NRz, wherein Rz is H, C1-C6-alkyl or benzyl; 25 R1 and R2 independently from each other are selected from H, halogen, C1-C6- alkyl, C2-C6-alkenyl, C2-C6-alkynyl, C1-C6-alkoxy, C1-C6-alkylthio, - NRfRg, C3-C8-cycloalkyl, C3-C8-cycloalkyl-C1-C6-alkyl, C3-C8- cycloalkyl-C2-C6-alkenyl, C3-C8-cycloalkenyl, cycloalkenyl-C1- C6-alkyl, C3-C8-cycloalkenyl-C2-C6-alkenyl, phenyl, phenyl-C1-C6- 30 alkyl, phenyl-C2-C6-alkenyl, naphthyl, naphthyl-C1-C6-alkyl, naphthyl- C2-C6-alkenyl, heterocyclyl, cyclyl-C1-C6-alkyl, and heterocyclyl- C2-C6-alkenyl, wherein (9925931_1):KZA the C1-C6-alkyl, alkenyl and C2-C6-alkynyl moieties in the aforementioned radicals R1 and R2 are unsubstituted or carry at least one substituent selected from hydroxy, halogen, cyano, nitro, alkoxy, C1-C6-haloalkoxy, C1-C6-alkylamino, di C1-C6-alkylamino and C1-C6- 5 alkylsulfonyl and/or n two radicals bound to the same carbon atom of said C1-C6- alkyl, alkenyl and C2-C6-alkynyl moieties in the aforementioned radicals R1 and R2 together with said carbon atom may form a carbonyl group, and n 10 the C3-C8-cycloalkyl, cycloalkenyl, phenyl, naphthyl and heterocyclyl moieties in the aforementioned radicals R1 and R2 are unsubstituted or carry at least one substituent selected from y, halogen, cyano, nitro, C1-C6-alkyl, C3-C8-cycloalkyl, C1-C6-haloalkyl, C1-C6-alkoxy, C1- C6-haloalkoxy, C1-C6-alkylamino, di-C1-C6-alkylamino, C1-C6- 15 alkylsulfonyl, phenyl and 5- or 6- membered hetaryl and/or wherein two radicals bound to the same carbon atom of said C3-C8- lkyl, C3-C8-cycloalkenyl and heterocyclyl moieties of the radicals R1 and R2 together with said carbon atom may form a carbonyl group, and wherein 20 Rf and Rg are ndently from each other selected from H, C1-C6- alkyl, C1-C6-haloalkyl, C3-C8-cycloalkyl, C3-C8-cycloalkenyl and heterocyclyl or Rf and Rg together with the nitrogen atom to which they are bound form a cyclic amine, which may comprise a further heteroatom selected from 25 O, N and S as a ring member; n is an integer selected from 0, 1, 2 or 3; and R3 if present are selected independently from each other from halogen, C1- C6-alkoxy and C1-C6-haloalkoxy.

2. A pyrazole compound of formula (Ia) or (Ib) according to claim 1, wherein Ra 30 and Rb are both hydrogen. (9925931_1):KZA

3. A pyrazole compound of formula (Ia) or (Ib) according to claim 1 to 2, wherein Rc and Rd are both hydrogen.

4. A pyrazole compound of a (Ia) or (Ib) ing to any one of claims 1 to 3, wherein Y1 is CRy1 or N, wherein Ry1 has one of the meanings as defined for 5 Ry in claim 1.

5. A pyrazole nd of formula (Ia) or (Ib) according to claim 4, wherein Y1 is CRy1.

6. A pyrazole nd of formula (Ia) or (Ib) according to claim 5, wherein Ry1 is selected from H, C1-C6-alkyl, C1-C6-alkoxy-C1-C6-alkyl and haloalkyl. 10

7. A pyrazole compound of formula (Ia) or (Ib) according to any one of claims 1 to 6, wherein Y2 is CRy2, Y3 is CRy3, Y4 is CRy4 and Y5 is CRy5, wherein Ry2, Ry3, Ry4 and Ry5 independently from each other have one of the meanings as defined for Ry in claim 1.

8. A pyrazole compound of formula (Ia) or (Ib) according to claim 7, wherein Ry2, 15 Ry3, Ry4 and Ry5 are independently selected from H, halogen, C1-C6-alkoxy, C1- C6-alkoxy-C1-C6-alkoxy and C1-C6-haloalkoxy.

9. A pyrazole compound of formula (Ia) or (Ib) according to any one of claims 1 to 8, wherein Z is O.

10. A pyrazole compound of formula (Ia) or (Ib) according to any one of 20 claims 1 to 8, wherein Z is S.

11. A le compound of formula (Ia) or (Ib) according to any one of claims 1 to 8, wherein Z is NRz.

12. A pyrazole compound of formula (Ia) or (Ib) according to any one of claims1 to 11, wherein R1 and R2 independently from each other are ed from H, C1- 25 C6-alkyl, C3-C8-cycloalkyl, phenyl and naphthyl.

13. A pyrazole compound of formula (Ia) or (Ib) according to claim 12, wherein R1 and R2 independently from each other are selected from H, C1-C4-alkyl, C3-C6- cycloalkyl and phenyl. (9925931_1):KZA

14. A pyrazole compound of formula (Ia) or (Ib) according to claim 13, wherein R1 and R2 are selected from alkyl.

15. A pyrazole compound of formula (Ia) or (Ib) according to any one of claims 1 to 14, n n is 0 or 1. 5

16. A pyrazole nd of formula (Ia) or (Ib) according to any one of claims 1 to 15, wherein R3 if present are independently selected from halogen.

17. A pyrazole compound of formula (Ia) according to any one of claims 1 to 16, wherein the pyrazole compound is ed from a compound of formula (Ia’), (R3) N O N Z Ry5 O N R2 H Ry2 Ry3 (Ia') 10 wherein Z, R1, R2, R3, Ry1, Ry2, Ry3, Ry4 and Ry5 have one of the meanings given in any one of the preceding claims and n is 0 or 1.

18. A pyrazole compound of formula (Ib) according to any one of claims 1 to 16, wherein the pyrazole compound is selected from a compound of general formula (Ib’), (R3) N O Ry1 O N R2 H Z (Ib') Ry5 15 Ry4 wherein Z, R1, R2, R3, Ry1, Ry2, Ry3, Ry4 and Ry5 have one of the meanings given in any one of the preceding claims and n is 0 or 1. (9925931_1):KZA

19. Use of a le compound of formula (Ia) or (Ib) according to any one of claims 1 to 18, or a pharmaceutically able salt thereof, for preparing a medicament for the treatment of diseases related to CRTH2 activity.

20. Use of a pyrazole nd of formula (Ia) or (Ib) according to any one of 5 claims 1 to 18, or a pharmaceutically acceptable salt thereof, for preparing a medicament for the prevention and/or treatment of inflammatory, infectious and immunoregulatory ers, atory or gastrointestinal diseases or complaints, inflammatory diseases of the joints and allergic diseases of the nasopharynx, eyes, and skin. 10

21. A pharmaceutical formulation, containing one or more of the pyrazole compounds of a (Ia) and/or (Ib) according to any one of claims 1 to 18, or a pharmaceutically acceptable salt thereof.

22. A pharmaceutical formulation, containing one or more pyrazole compounds of formula (Ia) and/or (Ib) according to any of claims 1 to 18, or a pharmaceutically 15 acceptable salt thereof, in combination with one or more active substances selected from among betamimetics, anticholinergics, corticosteroids, PDE4 inhibitors, LTD4 antagonists, EGFR inhibitors, CCR3 antagonists, CCR5 nists, CCR9 antagonists, 5-LO inhibitors, histamine-receptor nists, SYK inhibitors and sulfonamides. 20

23. A pyrazole compound of Formula (Ia) or (Ib) or a pharmaceutically acceptable salt thereof O R1 Rc HO Rd (R3) N O Ra Rb N Z R2 H Y5 Y1 Y4 (Ia) Y2 Y3 O R1 Rc HO Rd (R3) N O Ra Rb N Y1 R2 H Z (Ib) Y2 Y3 Y4 (9925931_1):KZA as defined in claim 1 and substantially as hereinbefore described with nce to any one of the Examples. Boehringer Ingelheim International GmbH By the Attorneys for the Applicant 5 SPRUSON & FERGUSON Per: (9925931_1):KZA