AU5584698A - P2y receptor antagonists - Google Patents
P2y receptor antagonistsInfo
- Publication number
- AU5584698A AU5584698A AU55846/98A AU5584698A AU5584698A AU 5584698 A AU5584698 A AU 5584698A AU 55846/98 A AU55846/98 A AU 55846/98A AU 5584698 A AU5584698 A AU 5584698A AU 5584698 A AU5584698 A AU 5584698A
- Authority
- AU
- Australia
- Prior art keywords
- receptor
- phosphate
- group
- compound
- deoxy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 108010000818 Purinergic P2Y Receptors Proteins 0.000 title claims description 45
- 102000002298 Purinergic P2Y Receptors Human genes 0.000 title claims description 45
- 239000002464 receptor antagonist Substances 0.000 title claims description 8
- 229940044551 receptor antagonist Drugs 0.000 title claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 172
- 108020003175 receptors Proteins 0.000 claims description 92
- 102000005962 receptors Human genes 0.000 claims description 91
- 230000000694 effects Effects 0.000 claims description 67
- 229910019142 PO4 Inorganic materials 0.000 claims description 58
- OIRDTQYFTABQOQ-KQYNXXCUSA-N adenosine Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O OIRDTQYFTABQOQ-KQYNXXCUSA-N 0.000 claims description 57
- 239000005557 antagonist Substances 0.000 claims description 52
- 238000000034 method Methods 0.000 claims description 48
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 41
- 125000000217 alkyl group Chemical group 0.000 claims description 40
- 239000005696 Diammonium phosphate Substances 0.000 claims description 29
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 29
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 29
- -1 hydroxy, amino Chemical group 0.000 claims description 27
- 239000002126 C01EB10 - Adenosine Substances 0.000 claims description 24
- 229960005305 adenosine Drugs 0.000 claims description 24
- 239000010452 phosphate Substances 0.000 claims description 23
- 230000002860 competitive effect Effects 0.000 claims description 19
- 125000003545 alkoxy group Chemical group 0.000 claims description 18
- 230000027455 binding Effects 0.000 claims description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 18
- 150000003839 salts Chemical class 0.000 claims description 15
- 239000012472 biological sample Substances 0.000 claims description 14
- 125000004414 alkyl thio group Chemical group 0.000 claims description 9
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 claims description 7
- 150000007942 carboxylates Chemical class 0.000 claims description 6
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 125000003435 aroyl group Chemical group 0.000 claims description 4
- UENGBOCGGKLVJJ-UHFFFAOYSA-N 2-chloro-1-(2,4-difluorophenyl)ethanone Chemical compound FC1=CC=C(C(=O)CCl)C(F)=C1 UENGBOCGGKLVJJ-UHFFFAOYSA-N 0.000 claims description 3
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 3
- 239000004254 Ammonium phosphate Substances 0.000 claims description 2
- CCPLITQNIFLYQB-XLPZGREQSA-N [(2r,3s,5r)-5-[6-(methylamino)purin-9-yl]-2-(phosphonooxymethyl)oxolan-3-yl] dihydrogen phosphate Chemical compound C1=NC=2C(NC)=NC=NC=2N1[C@H]1C[C@H](OP(O)(O)=O)[C@@H](COP(O)(O)=O)O1 CCPLITQNIFLYQB-XLPZGREQSA-N 0.000 claims description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 claims description 2
- 235000019289 ammonium phosphates Nutrition 0.000 claims description 2
- VBDCRDYFOSHPMG-UHFFFAOYSA-N diazanium hydroxy-dioxido-sulfanylidene-lambda5-phosphane Chemical compound P(=S)([O-])([O-])O.[NH4+].[NH4+] VBDCRDYFOSHPMG-UHFFFAOYSA-N 0.000 claims description 2
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 claims description 2
- 125000001475 halogen functional group Chemical group 0.000 claims 15
- 125000004356 hydroxy functional group Chemical group O* 0.000 claims 6
- FROPBOXAQRCDBF-BEGXXZDYSA-N [(2r,3r,5s)-2-(6-aminopurin-9-yl)-5-[chloro(hydroxy)methyl]oxolan-3-yl] dihydrogen phosphate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](C(O)Cl)C[C@H]1OP(O)(O)=O FROPBOXAQRCDBF-BEGXXZDYSA-N 0.000 claims 1
- VILLPWXDWGVHTE-KVQBGUIXSA-N [(2r,3s,5r)-5-(6-amino-8-bromopurin-9-yl)-2-(phosphonooxymethyl)oxolan-3-yl] dihydrogen phosphate Chemical compound BrC1=NC=2C(N)=NC=NC=2N1[C@H]1C[C@H](OP(O)(O)=O)[C@@H](COP(O)(O)=O)O1 VILLPWXDWGVHTE-KVQBGUIXSA-N 0.000 claims 1
- LNQVTSROQXJCDD-KQYNXXCUSA-N 3'-AMP Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](CO)[C@@H](OP(O)(O)=O)[C@H]1O LNQVTSROQXJCDD-KQYNXXCUSA-N 0.000 description 35
- LNQVTSROQXJCDD-UHFFFAOYSA-N adenosine monophosphate Natural products C1=NC=2C(N)=NC=NC=2N1C1OC(CO)C(OP(O)(O)=O)C1O LNQVTSROQXJCDD-UHFFFAOYSA-N 0.000 description 35
- 239000000556 agonist Substances 0.000 description 31
- UEEFBRHXFDJPTA-KWIZKVQNSA-J tetrasodium;[[[(2r,3s,4r,5r)-5-(6-amino-2-methylsulfanylpurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-oxidophosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].C12=NC(SC)=NC(N)=C2N=CN1[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O UEEFBRHXFDJPTA-KWIZKVQNSA-J 0.000 description 27
- 239000000203 mixture Substances 0.000 description 25
- 210000004027 cell Anatomy 0.000 description 24
- 235000021317 phosphate Nutrition 0.000 description 24
- GFFGJBXGBJISGV-UHFFFAOYSA-N Adenine Chemical compound NC1=NC=NC2=C1N=CN2 GFFGJBXGBJISGV-UHFFFAOYSA-N 0.000 description 22
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- SQUHHTBVTRBESD-UHFFFAOYSA-N Hexa-Ac-myo-Inositol Natural products CC(=O)OC1C(OC(C)=O)C(OC(C)=O)C(OC(C)=O)C(OC(C)=O)C1OC(C)=O SQUHHTBVTRBESD-UHFFFAOYSA-N 0.000 description 20
- 238000009472 formulation Methods 0.000 description 20
- 102000014384 Type C Phospholipases Human genes 0.000 description 19
- 108010079194 Type C Phospholipases Proteins 0.000 description 19
- WHTCPDAXWFLDIH-KQYNXXCUSA-J adenosine 3',5'-bismonophosphate(4-) Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP([O-])([O-])=O)[C@@H](OP([O-])([O-])=O)[C@H]1O WHTCPDAXWFLDIH-KQYNXXCUSA-J 0.000 description 17
- 238000004679 31P NMR spectroscopy Methods 0.000 description 16
- DRTQHJPVMGBUCF-XVFCMESISA-N Uridine Chemical class O[C@@H]1[C@H](O)[C@@H](CO)O[C@H]1N1C(=O)NC(=O)C=C1 DRTQHJPVMGBUCF-XVFCMESISA-N 0.000 description 16
- 239000010432 diamond Substances 0.000 description 16
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- 238000005160 1H NMR spectroscopy Methods 0.000 description 14
- ZKHQWZAMYRWXGA-UHFFFAOYSA-N Adenosine triphosphate Natural products C1=NC=2C(N)=NC=NC=2N1C1OC(COP(O)(=O)OP(O)(=O)OP(O)(O)=O)C(O)C1O ZKHQWZAMYRWXGA-UHFFFAOYSA-N 0.000 description 14
- 230000036515 potency Effects 0.000 description 13
- 238000005481 NMR spectroscopy Methods 0.000 description 12
- ZKHQWZAMYRWXGA-KQYNXXCUSA-N Adenosine triphosphate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OP(O)(=O)OP(O)(O)=O)[C@@H](O)[C@H]1O ZKHQWZAMYRWXGA-KQYNXXCUSA-N 0.000 description 11
- 230000003389 potentiating effect Effects 0.000 description 11
- OLXZPDWKRNYJJZ-UHFFFAOYSA-N 2'-dA Natural products C1=NC=2C(N)=NC=NC=2N1C1CC(O)C(CO)O1 OLXZPDWKRNYJJZ-UHFFFAOYSA-N 0.000 description 10
- XNOBOKJVOTYSJV-KQYNXXCUSA-N [[(2r,3s,4r,5r)-5-(6-amino-2-methylsulfanylpurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] phosphono hydrogen phosphate Chemical compound C12=NC(SC)=NC(N)=C2N=CN1[C@@H]1O[C@H](COP(O)(=O)OP(O)(=O)OP(O)(O)=O)[C@@H](O)[C@H]1O XNOBOKJVOTYSJV-KQYNXXCUSA-N 0.000 description 10
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 10
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- INAPMGSXUVUWAF-GCVPSNMTSA-N [(2r,3s,5r,6r)-2,3,4,5,6-pentahydroxycyclohexyl] dihydrogen phosphate Chemical compound OC1[C@H](O)[C@@H](O)C(OP(O)(O)=O)[C@H](O)[C@@H]1O INAPMGSXUVUWAF-GCVPSNMTSA-N 0.000 description 9
- 238000004128 high performance liquid chromatography Methods 0.000 description 9
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- 206010003571 Astrocytoma Diseases 0.000 description 7
- 239000006144 Dulbecco’s modified Eagle's medium Substances 0.000 description 7
- 101001120086 Homo sapiens P2Y purinoceptor 12 Proteins 0.000 description 7
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- 125000005843 halogen group Chemical group 0.000 description 7
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- VKIGAWAEXPTIOL-UHFFFAOYSA-N 2-hydroxyhexanenitrile Chemical compound CCCCC(O)C#N VKIGAWAEXPTIOL-UHFFFAOYSA-N 0.000 description 6
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- JWZZKOKVBUJMES-UHFFFAOYSA-N (+-)-Isoprenaline Chemical compound CC(C)NCC(O)C1=CC=C(O)C(O)=C1 JWZZKOKVBUJMES-UHFFFAOYSA-N 0.000 description 5
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- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- VZPXDCIISFTYOM-UHFFFAOYSA-K trisodium;1-amino-4-[4-[[4-chloro-6-(3-sulfonatoanilino)-1,3,5-triazin-2-yl]amino]-3-sulfonatoanilino]-9,10-dioxoanthracene-2-sulfonate Chemical compound [Na+].[Na+].[Na+].C1=2C(=O)C3=CC=CC=C3C(=O)C=2C(N)=C(S([O-])(=O)=O)C=C1NC(C=C1S([O-])(=O)=O)=CC=C1NC(N=1)=NC(Cl)=NC=1NC1=CC=CC(S([O-])(=O)=O)=C1 VZPXDCIISFTYOM-UHFFFAOYSA-K 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H19/00—Compounds containing a hetero ring sharing one ring hetero atom with a saccharide radical; Nucleosides; Mononucleotides; Anhydro-derivatives thereof
- C07H19/02—Compounds containing a hetero ring sharing one ring hetero atom with a saccharide radical; Nucleosides; Mononucleotides; Anhydro-derivatives thereof sharing nitrogen
- C07H19/04—Heterocyclic radicals containing only nitrogen atoms as ring hetero atom
- C07H19/16—Purine radicals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P13/00—Drugs for disorders of the urinary system
- A61P13/10—Drugs for disorders of the urinary system of the bladder
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P5/00—Drugs for disorders of the endocrine system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/08—Vasodilators for multiple indications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H19/00—Compounds containing a hetero ring sharing one ring hetero atom with a saccharide radical; Nucleosides; Mononucleotides; Anhydro-derivatives thereof
- C07H19/02—Compounds containing a hetero ring sharing one ring hetero atom with a saccharide radical; Nucleosides; Mononucleotides; Anhydro-derivatives thereof sharing nitrogen
- C07H19/04—Heterocyclic radicals containing only nitrogen atoms as ring hetero atom
- C07H19/16—Purine radicals
- C07H19/20—Purine radicals with the saccharide radical esterified by phosphoric or polyphosphoric acids
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- General Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biochemistry (AREA)
- Molecular Biology (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- Diabetes (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Endocrinology (AREA)
- Urology & Nephrology (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Peptides Or Proteins (AREA)
Description
P2Y RECEPTOR ANTAGONISTS
Statement of Federal Support
This invention was made with Government support under grant numbers GU38213, GM29536, and HL54889 from the United States Public Health Service of the National Institutes of Health. The Government has certain rights to this invention.
Related Applications This application claims the benefit of U.S. Provisional Application No. 60/029,855, filed October 30, 1996.
Field of the Invention
This invention relates to compounds that are antagonists of P2Y purinergic receptors, and more specifically to antagonists that have competitive antagonist activity at P2Y purinergic receptors.
Background of the Invention
Extracellular adenine and uridine nucleotides regulate a broad range of physiological responses through an increasingly diverse set of G-protein-coupled and ligand-gated ion channel receptors. See, G. Burastock, Prog. Biochem. Pharmacol. 16, 141-154 (1980); G. R. Dubyak, G. R., and C. El-Moatassim, Am. J. Physiol. 265, C577- C606 (1993); T. K. Harden, et al., Ann. Rev. Pharmacol. Toxicol. 35, 541-579 (1995).
Delineation of multiple receptor subtypes initially evolved from tissue- and agonist- specific physiological responses to nucleotide analogs. However, the complexity of the molecular species that respond to adenine and uridine nucleotides has been emphasized recently with reports of the cloning of approximately a dozen different P2 receptor
genes. See T. K. Harden et al., Ann. Rev. Pharmacol. Toxicol. 35, 541-579 (1995).; B. B. Fredholm, Pharmacol. Rev. 46, 143-156 (1994). Following both pharmacological and genetic characterization of P2 receptors, ATP is now widely accepted as an extracellular signaling molecule released from nerves and many other tissues. B.B. Fredholm et al., Pharmacol. Rev., 46, 143-156 (1994). Adenine nucleotides activate both ligand-gated ion channels of the P2X superfamily and G-protein coupled receptors of the P2Y superfamily. M.P. Abbracchio et al., Pharmacol. Therap. 64, 445-475 (1994). In addition, uridine nucleotides act as agonists at certain subtypes of P2Y receptors. S.E. O'Connor et al., Trends. Pharmacol. Sci. 12, 137-141 (1991); J.M. Boeynaems et al., in P2 Purinoreceptors: localization, function and transduction mechanisms, (John Wiley & Sons, Chichester, England)(Ciba Foundation Symposium 198) at 266-277 (1996).
Since extracellular ATP is known to be responsible for the regulation of a large number of physiological functions, specific competitive receptors for receptors activated by nucleotides have potentially valuable therapeutic applications. Although progress has been made in identifying adenine nucleotide analogs that exhibit selectivities among P2 receptors, the availability of antagonists of these receptors is limited. Two compounds, reactive blue 2 and suramin, have been available as general P2 receptor antagonists. Recently, a pyridoxal phosphate analog, PPADS, has been reported to exhibit selectivity as a competitive antagonist of certain P2 receptors. G. Lambrecht, et al., Eur. J. Pharmacol. Ill, 217-219 (1992)); A.U. Ziganshin, et al., Br. J. Pharmacol. 110, 1491-1495 (1993). The compound 2-propylthio- β,γ-difluoromethylene-D-ATP has also been reported to be a relatively high affinity antagonist of the ADP receptor on platelets. R. G. Humphries, et al., Trends Pharmacol. Sci. 16, 179-181 (1995); R. G. Humphries, et al., Br. J. Pharmacol. 113, 1057-1063 (1994). However, the majority of these molecules are disadvantageously non-selective in that they interact with a broad range of proteins that are unrelated to adenine nucleotide-regulated receptor signaling.
Summary of the Invention The present invention is based on the initial discovery of 2 ' - and 3 ' -phosphate derivatives of ATP and UTP that were found to be partial agonists (and consequently, competitive antagonists) of P2Y receptors. In particular, adenosine 3',5'- and 2',5'-
bz'sphosphates were found to act as competitive antagonists at the P2Y, receptor. It has now been discovered that a subset of this group of analogs has potent, competitive antagonistic activity without any partial agonist activity at the human P2Y, receptor. In general, these compounds can be described as 2'- and 3'-deoxyadenosine bisphosphate and 2'- and 3'-deoxyuridine bisphosphate analogs containing various structural modifications at, for example, the 2-, 6-, and 8-positions of the adenine rings, on the ribose moiety, and on the phosphate groups. Significantly, the compounds of the present invention exhibit higher apparent affinities of interaction with the P2Y, receptor than does ATP, and exhibit absolute selectivity for binding to the P2Y, receptor over four other G-protein-linked P2 receptor subtypes.
Accordingly, a first aspect of the invention is a novel compound of Formula I:
wherein: m is 1, 2, or 3, with 1 being preferred; n is 1, 2, or 3, with 1 being preferred; p is 0 or 1, with 1 being preferred; q is 0, 1, 2, or 3, with the proviso that when p is zero, q is not zero;
R, is selected from the group consisting of H, lower alkyl, halo, alkoxy, and alkylthio, with H being preferred;
R2 is selected from the group consisting of hydroxy, halo, alkylthio, lower alkyl, substituted lower alkyl, and -NR'R", wherein R' and R" are each independently selected from the group consisting of H, lower alkyl, aroyl, alkoxy, substituted lower alkyl, alkoxy, and alkoxyalkyl;
R3 is selected from the group consisting of H, halo, and lower alkyl, with
H being preferred;
R4 is selected from the group consisting of H and lower alkyl, with H preferred;
X, is selected from the group consisting of O, S, N, and CH2; with O being preferred; and
X2, X3 and X4 are each independently selected from the group consisting of H, hydroxy, amino, lower alkyl, halo, alkoxy, phosphate, thiophosphate, carboxylate, and nitro, or X2 and X3 together are cyclophosphate, with phosphate being preferred; together with the pharmaceutically acceptable salts thereof.
A second aspect of the invention is a novel compound of Formula II:
wherein: m is 1, 2, or 3; with 1 being preferred; n is 1, 2, or 3; with 1 being preferred; p is 0 or 1 ; with 1 being preferred; q is 0, 1, 2, or 3, with the proviso that when p is zero, q is not zero;
R, is selected from the group consisting of H, lower alkyl, and halo; with
H being preferred;
R2 is selected from the group consisting of H, and lower alkyl; with H being preferred;
X, is selected from the group consisting of O, S, N, and CH2; with O being preferred; and
X2, X3 and X4 are each independently selected from the group consisting of H, hydroxy, amino, lower alkyl, halo, alkoxy, phosphate, thiophosphate, carboxylate, and nitro, or X2 and X3 together are cyclophosphate, with phosphate being preferred; together with the pharmaceutically acceptable salts thereof.
A third aspect of the present invention is a method of detecting a P2Y receptor in a biological sample suspected of containing a P2Y receptor, comprising contacting said biological sample with a compound of the present invention that binds selectively to a P2Y receptor, and then detecting the presence or absence of binding of the P2Y receptor-binding compound to a receptor in the biological sample, the presence of binding indicating the presence of a P2Y receptor.
Additional aspects of the present invention include methods of treating disorders that respond to treatment with compounds that interfere with the signaling proteins that interact with extracellular adenine or uridine (including ATP-induced vasoconstriction, bladder disease, prostate disease, hyperthyroidism, hyperinsulinemia, and disorders characterized by excessive production of adeno-cortical hormones), the methods comprising administering to a subject in need of such treatment a compound of the present invention as provided above, in an amount sufficient to treat the disorder.
A final aspect of the present invention is a pharmaceutical composition useful in the treatment of a disorder characterized by being responsive to treatment with compounds that interfere with the signaling proteins that are utilized by extracellular adenine or uridine nucleotides, the pharmaceutical composition comprising, in a pharmaceutically acceptable carrier, a compound of the present invention or a pharmaceutically acceptable salt thereof, in an amount effective to combat the disorder. The foregoing and other objects and aspects of the present invention are explained in detail in the drawings herein and the specification set forth below.
Brief Description of the Drawings In the figures, data shown are the mean of either duplicate or triplicate assays, and the results are representative of those obtained in experiments repeated at least three times.
FIG 1. is a graphical illustration of the effect of sulfate-substituted adenine nucleotide analogs on inositol lipid hydrolysis by turkey erythrocyte membranes. The capacity of the indicated concentrations of 2MeSATP (filled circles), adenosine 3'- phosphate, 5'-phosphosulphate (open circles), ADP (open diamonds), and adenosine 5'- phosphosulfate (filled diamonds) to stimulate the hydrolysis of inositol lipids by turkey erythrocyte membranes was determined as described below in Example 3.
FIG. 2 is a graphical illustration of the effect of adenosine 3' -phosphate, 5'- phosphosulphate on P2Y receptor-mediated activation of phospholipase C in turkey erythrocytes. [3H]Inositol labeled turkey erythrocyte membranes were incubated with the indicated concentrations of adenosine 3 ' -phosphate, 5 ' -phosphosulphate in the absence (filled circles), or in the presence of 1 (open circles), 3 (filled diamonds), 10 (open diamonds), 30 (filled triangles), 100 (open triangles), 300 (filled squares), and 1000 (open squares) nM 2MeSATP.
FIG. 3 illustrates competitive inhibition of 2MeSATP-mediated activation of P2 Y receptors by adenosine 3 ' -phosphate, 5 ' -phosphosulphate and adenosine 3 ' ,5 ' bis phosphate. [3H]Inositol labeled turkey erythrocyte membranes were incubated with the indicated concentrations of 2MeSATP in the absence (filled circles), or in the presence of 0.1 (open circles), 0.3 (filled triangles), 1 (open triangles), 3 (filled squares), 10 (open squares), 30 (filled circles), 100 (open circles), 300 (filled diamonds), and 1000 (open diamonds) μM adenosine 3 '-phosphate, 5 '-phosphosulphate (Panel A) or adenosine
3 ',5 '- sphosphate (Panel C). Inositol phosphate accumulation induced by adenosine 3'-phosphate, 5 '-phosphosulphate or or adenosine 3',5'-b ^phosphate alone was subtracted from the accumulation in the presence of the indicated concentrations of 2MeSATP. Schild regression analysis of data shown in A and C are shown in panels B and D, respectively.
FIG. 4 illustrates the effect of or adenosine 3',5'-b/sphosphate on the activation of phospholipase C by β-adrenergic receptors in turkey erythrocyte membranes. The capacity of the indicated concentrations of or adenosine 3',5'-όz.sphosphate to stimulate the accumulation of inositol phosphates in the absence (open diamonds) or in the presence (closed diamonds) of 10 μM isoproterenol was determined as described below in Example 8.
FIG. 5 illustrates that adenosine 3',5'-bisphosphate is a competitive antagonist without agonistic activity at the human P2Y, receptor stably expressed in 1321N1 human astrocytoma cells. In Panel A, cells were incubated with the indicated concentrations of adenosine 3',5'-bz'.sphosphate in the absence (filled circles) or in the presence of 10 (filled diamonds), 30 (filled triangles), 100 (open triangles), 300 (filled squares), and 1000 nM 2MeSATP (open squares). In Panel B, the concentration- dependence of 2MeSATP for the activation of phospholipase C in 1321N1 cells was determined in the absence (filled circles), or in the presence of 0.3 (open diamonds), 1 (filled triangles), 3 (open triangles), 10 (filled squares), 30 (open squares), 100 (filled diamonds), and 300 μM (open circles) adenosine 3',5'-6z',sphosphate. Panel C illustrates
Schild regression analysis of data shown in Panel B. Slope value was not significantly different from unity.
FIG. 6 illustrates the lack of agonist or antagonist effects of adenosine 3',5'- bz'sphosphate on the adenylyl cyclase-coupled P2Y receptor of C6 cells. The capacity of indicated concentrations of 2MeSATP to inhibit isoproterenol-stimulated cyclic AMP accumulation (Panel A), or the capacity of adenosine 3',5'-/3z'5phosphate to affect the response of 10 μM isoproterenol (open diamonds), or 10 μM isoproterenol + 1 nM 2MeSATP (filled diamonds)-induced accumulation of cyclic AMP (Panel B) was studied as described in Example 10. FIG. 7 illustrates the effects of deoxyadenosine bisphosphate derivatives on phospholipase C in turkey erythrocyte membranes. Both concentration-dependent stimulation of inositol phosphate formation and its inhibition by compounds 2'- Deoxyadenosine-3 ' ,5 ' -bz',sphosphate (compound 4)(triangles) and 3 ' -Deoxyadenosine-
2',5'-bz'^phosphate (compound 17) (circles) were observed. Membranes from [3H]inositol-labelled erythrocytes were incubated for 5 min at 30°C in the presence of the indicated concentrations of 4 and 17, either alone (open symbols) or in combination
(solid symbols) with 10 nM 2-MeSATP.
FIG. 8 illustrates the effects of N6-alkyl analogues of adenosine and 2'- deoxyadenosine έz'^phosphate derivatives on agonist-stimulated phospholipase C in turkey erythrocyte membranes. Membranes from [3H]inositol-labelled erythrocytes were incubated for 5 min at 30°C in the presence of 10 nM 2-MeSATP and the indicated
concentrations of the compounds 2'-Deoxy-N6-methyladenosine 3 ',5 '-bisphosphate (Compound 9, squares), 2 '-Deoxy-N6-ethyladenosine-3', 5' -bisphosphate (Compound 10, triangles), 2'-Deoxy-N6-propyladenosine-3 ',5 '-bisphosphate (Compound 11, diamonds), 2'-Deoxy-N6-dimethyladenosine-3 ',5 '-bisphosphate (Compound 13, asterisks), and 2 '-Deoxy-N^-aminohexyladenosine-S', 5 '-bisphosphate (Compound 23, circles).
FIG. 9 is a graphical illustration showing the log dose response curves of the P2Y, agonist 2MeSATP in the presence of a control (circles), or 0.1 μM (diamonds), 0.3 μM (triangles), lμM (squares), 3 μM (asterisks), lOμM (crosses) and 30μM (X-es) of the compound 2 ' -Deoxy-N6-methyladenosine 3 ' ,5 ' -bisphosphate (Compound 9). The parallel shifting of the agonist log dose response curve to the right illustrates the competitive antagonist activity of Compound 9. Data is shown in terms of [3H] Inositol Phosphates (percenage of maximum) as a function of the log Molar concentration of 2MeSATP. FIG. 10 is a Schild regression of the data presented in FIG. 9.
In FIG. 10, the calculation of the ratio of the agonist (2MeSATP) concentration that elicits equal responses in the absence and presence of antagonist (Compound 9) at increasing concentrations (termed the dose ratio) is plotted according to the relationship log(dose ratio-1) vs. log concentration (in Molar) of Compound 9. In that the slope of the line produced by the Schild regression is approximately equal to 1 (slope = 0.912), the compound 9 is indicated to be a competitive antagonist of the P2Y, receptor. FIG. 11 is a graphical illustration the selective binding and specificity of Compound 9 to the P2Y, receptor. Inositol phosphate accumulation in 1321N1 human astrocytoma cells expressing the cloned, human P2Y, (far left), P2Y2(second from left) , P2Y4 (second from right) or P2Y6 (far right) receptor was measured in the absence (open bars) or presence (filled bars) of Compound 9 disclosed herein. While the presence of Compound 9 had no effect on the accumulation of inositol phosphates in cells expressing P2Y2 and P2Y6, and had the slight effect of increasing the amount of inositol phosphates detected in cells expressing the P2Y4 receptor, the presence of Compound 9 completely inhibited the generation of inositol phosphates in cells expressing P2Y,.
This result indicates that Compound 9 binds selectively to the P2Y, receptor, and
further that the compound is a potent antagonist of the P2Y, receptor.
Detailed Description of the Invention
The present invention will now be described more fully hereinafter, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure may fully convey the scope of the invention to those skilled in the art.
Purinergic receptors are referred to herein according to the guidelines of the IUPHAR Nomenclature Committee, which has provided general recommendations that
G protein-coupled nucleotide receptors be designated as P2Y receptors, and that receptors in a subfamily be denoted by numbers that reflect the chronological order in which the sequences of functional receptors have become available to the public domain. See, B. B. Fredholm, et al., Pharmacol. Rev. 46, 143-156 (1994). However, the receptor cloned by Chang et al. (J Biol. Chem. 270, 26152-26158 (1995)) has been referred to as the P2Y6 receptor, even though it was the third functional P2Y receptor for which a sequence was published. This receptor is referred to herein as the P2Y6 receptor. The P2Y2 receptor has been previously referred to in the literature as the P2U purinergic receptor. As used herein, the term "lower alkyl" is to be broadly interpreted and includes, but is not limited to, Cl to C4 linear, branched, saturated, unsaturated, cyclic, and acyclic alkyls. Halogenated alkyls, (e.g., fluoroalkyls, chloroalkyls) are also encompassed by this definition. The term "alkoxy" is defined herein to be a residue represented by the formula -OR, with R representing, for example, lower alkyl as defined above. Halogenated alkoxy groups, such as fluoroalkoxides, are also included within this definition. The term "amino" as used herein refers to the group NR'R", wherein R' and R" are independently selected from H or lower alkyl as defined above, i.e., -NH2, -NHCH3, -N(CH3)2, etc. The term "alkylthio" as used herein refers to a residue of the formula -SR, where R represents, for example, lower alkyl as defined above. The term "halo" refers to a residue selected from the group consisting of -FI, -
Cl, -Br and -I. Terms not defined specifically herein are to be given the meaning normally understood in the art.
As used herein, the term "agonist" is used to refer to a compound that binds to a physiological receptor and mimics the effects of the endogenous regulatory compound. Compounds that bind to physiological receptors and also inhibit or interfere with the binding of the endogenous agonist (i.e., by competing for the agonist binding site) are generally referred to herein as "antagonists." If the inhibition caused by the antagonist can be overcome by increasing the concentration of the agonist, ultimately achieving the same maximal effect, then the antagonist is referred to herein as a "competitive antagonist."
The present invention relates to novel compounds, and to methods of using both novel compounds and compounds that are known. Compounds that are illustrative of the compounds of the present invention (hereinafter the "active compounds") include those compounds according to Formula I and Formula II, and the pharmaceutically acceptable salts thereof, as provided above in the Summary of the Invention. The novel compounds of the present invention are those which are defined according to Formula I above, with the proviso that when R,, R3, and R4 are each H, and m, n, and p are each 1, and q is 1, 2, or 3, and X, is O, and X4 is phosphate, and X2 and X3 are each either hydroxy, H or phosphate or together are cyclophosphate, R2 is not -NH2. Novel compounds of the present invention also include compounds of Formula II as set forth above, with the proviso that when R, and R2 are H, and p, m, and n are each 1, and q is 1, 2 or 3, and X, is O, X2 and X3 are not H, X2 and X3 are not -OH, and X2 and X3 together are not cyclophosphate.
Preferred compounds of the invention are those compounds of Formula I and
Formula II that are deoxy at the 2' and 3" positions (R2 and R3 in Formulae I and II) of the compound. Other preferred compounds of the present invention are the substituted N6 analogue compounds of Formula I, wherein (in reference to Formula I), R2 is -R'R' ',
R' is H and R' ' is lower alkyl.
Compounds that are particularly preferred are the deoxyadenosine-based compounds set out and identified by compound number in Table 1, below. In the general structure illustrated in Table 1, X, is O.
Table 1. Chemical structures of novel adenine nucleotides synthesized as potential P2Y, receptor antagonists.
7 H SCH3 NH2 H H PO4H2 PO4H2
8 H H NH2 Br H PO4H2 PO4H2
9 H H NHCH3 H H PO4H2 PO4H2
10 H H NHCH2CH3 H H PO4H2 PO4H2
11 H H NH(CH2)2CH H H PO4H2 PO4H2
12 H H NHCOC6H6 H H PO4H2 PO4H2
13 H H N(CH3)2 H H PO4H2 PO4H2
14 H H Cl H H PO4H2 PO4H2
15 H H OH H H PO4H2 PO4H2
16 H H SCH3 H H PO4H2 PO4H2
17 H H NH2 H PO4H H PO4H2
18 H H NHCH3 H PO4H H PO4H2
19 H H NH H PO4H H Cl
20 H H NH2 H OCH3 PO4H2 PO4H2
21 H H NH2 H H PSO3H2 PSO3H2
Active compounds of the present invention also include the adenosine and uridine 2'- and 3'- sulphonate derivatives of the compounds of Formula I and Formula II provided above, and the adenosine and uridine 2'- and 3'- borate derivatives of the compounds of Formula I provided above.
Compounds that are known, but which are nonetheless useful in the practice of the methods of the present invention are commercially available, or may be made according to techniques known to one skilled in the art. The novel compounds of the present invention may also be made in accordance with known procedures, or variations thereof which will be apparent to those skilled in the art. See generally, J. L. Boyer, et al., Br. J. Pharmacol. 116, 2611-2616 (1995); J. L. Boyer, et al., J. Biol. Chem. 264, 884-890 (1989); B. Fischer, et al., J. Med. Chem. 36, 3937-3946 (1993). For example, to synthesize the compounds in Table 1 above (compounds 4-22), the appropriate starting nucleosides may first purchased or synthesized, and then either phosphorylated or thiophosphorylated. Several intermediates, such as 2'-deoxy-2-methylthioadenosine, 8- bromo-2'-deoxyadenosine, N6-ethyl and N6-propyl 2'-deoxyadenosines, and 3'-deoxy- N6-methyladenosine, may be prepared by the skilled artisan by adapting published procedures. See, e.g., L.F. Christensen et al., J. Med. Chem. 15, 735-739 (1972); M. Ikehara et al., in Nucleic Acid Chemistry; (L.B. Townsend and R.S. Tipson, eds., John Wiley and Sons: New York, 1978)(Vol U, at 837-841); E.M. van der Wenden et al., J. Med. Chem. 38, 4000-4006 (1995); V. Nair, Synthesis 670-672 (1982).
The phosphorylation of 2'- and 3'-deoxyadenosine and their analogues may be achieved with a single step reaction using phosphorous oxychloride (or thiophosphoryl chloride), trimethyl phosphate, and Proton Sponge® in an ice bath, as illustrated in Scheme I:
The reaction will typically completed after one hour and may quenched by the addition of buffer (e.g., triethylammonium bicarbonate). The resulting mixture may be lyophilized, according to the wishes and general knowledge of the skilled artisan. Purification of the compounds of the present invention may be performed using, for example, a Sephadex ion-exchange column with a linear gradient of water/ammonium bicarbonate (0.01 to 0.5 M). The chemical structures of the phosphorylated nucleosides of the present invention may be verified using Η-NMR and 3IP-NMR techniques, as well as high resolution mass spectroscopy, which techniques are known to those skilled in the art. Using Η-NMR it is possible to monitor the chemical shift of ribose protons at 5'- and 2'- (or 3'-) position, and to distinguish them before and after phosphorylation.
The presence of 3z,yphosphorylation is indicated by two phosphate signals in the 31P- NMR spectra.
The active compounds of the present invention may be prepared, utilized, and/or administered by themselves or in the form of their pharmaceutically acceptable salts. Such pharmaceutically acceptable salts include, for example, alkali metal salts such as sodium or potassium salts, alkaline earth metal salt, or ammonium or tetraalkyl ammonium salts represented by the formula NX4 + (wherein X is a C alkyl group). Pharmaceutically acceptable salts are defined herein as those salts that retain the desired biological activity of the parent compound but do not impart undesired toxicological effects.
The active compounds of the present invention are useful in delineating the physiological roles of extracellular adenine and uridine nucleotides and P2 receptors in target tissues. Accordingly, a method of the present invention is a method of detecting the presence of absence of a P2Y receptor in a biological sample suspected of containing a P2Y receptor. Such methods comprise contacting a biological sample suspected of containing the a P2Y receptor to an active compound of the present invention, which active compound is capable of specifically binding to a P2Y receptor, under conditions which permit the binding of a P2Y receptor to an active compound of the present invention; and then detecting the presence or absence of the binding. Biological samples taken from human or animal subjects for use in this method are generally biological fluids such as serum, blood plasma, or ascites fluid. In the alternative, the
sample taken from the subject can be a tissue sample (e.g., biopsy tissue; scrapings; etc.). Additionally, a biological sample may comprise a cell culture containing cells that may or may not express a P2Y receptor. Any suitable assay format known to one skilled in the art can be used to carry out the detection of the binding of the active compound to the P2Y receptor, one example being the turkey erythrocyte/phospholipase
C assay known in the art and set forth below in Example 3. Those skilled in the art will be familiar with numerous specific assay formats and variations thereof which may be useful for carrying out the method disclosed herein. Active compounds useful in the method of the present invention include the novel compounds set forth above, but also include known compounds of Formula I and Formula II above, such as adenosine 3',5'- bz'sphosphate and adenosine 2',5'-&z',yphosphate. These compounds, although known, have heretofore not been recognized as being able to specifically bind to, for example, the human P2Y, receptor. It is contemplated that active compounds according to Formula I and as disclosed herein are particularly useful in detecting the absence or presence of the P2Y, receptor in a biological sample, as specific binding to the P2Y, receptor by these compounds is illustrated below in the Examples section. Additionally, active compounds according to Formula II and as disclosed herein are particularly useful in detecting the presence or absence of P2Y receptors known to be activated by extracellular uridine nucleotides, e.g., the P2Y2 receptor and the P2Y4 receptor. Active compounds of the present invention may additionally be used as therapeutic agents that interfere with the signaling proteins used by extracellular adenine and uridine nucleotides. Accordingly, compounds of the present invention are useful in methods of treating disorders characterized as being responsive to treatment with compounds that interfere with the interaction between extracellular adenine and uridine nucleotides and signaling proteins utilized by these nucleotides. These disorder include, but are not limited to, ATP-induced vasoconstriction, hyperthyroidism, hyperinsulinemia, and disorders associated with excessive production of adeno-cortical hormones. In that P2Y receptors have been shown to be highly expressed in bladder and prostate muscle, the present invention is also useful in the treatment of disorders of the bladder (e.g., incontinence) and prostate (e.g., prostatic inflammation, prostatic hyperplasia). In a therapeutic method of the present invention, an active compound as described herein is administered to a subject suffering from a disorder that it
characterized as being responsive to treatment with compounds that interfere with the interaction between extracellular adenine and uridine nucleotides and the signaling proteins utilized by these nucleotides, in a therapeutically effective amount. A therapeutically effective amount is defined herein as an amount of the active compound sufficient to inhibit binding between a P2Y receptor and an extracellular adenine nucleotide or extracellular uridine nucleotide.
The present invention is concerned primarily with the treatment of human subjects. However, the present invention may also be employed for the treatment of other mammalian subjects, such as dogs and cats, for veterinary purposes. The dosage of a compound of the present invention, or the pharmaceutically acceptable salt thereof, will vary depending on the condition being treated and the state of the subject, but generally may be an amount sufficient to achieve dissolved concentrations of active compound in the blood of the subject or at the receptor site of from about 10"9 to about 10"4 moles/liter. Depending upon the solubility of the particular formulation of active compound administered, the daily dose may be divided among one or several unit dose administrations. The dose of active agent will vary according to the condition being treated and the dose at which adverse pharmacological effects occur. One skilled in the art will take such factors into account when determining dosage.
Pharmaceutical compositions of the present invention include those suitable for parenteral (including subcutaneous, intradermal, intramuscular, intravenous and intraarticular), oral, inhalation, topical (including buccal, sublingual, dermal and intraocular) and transdermal administration. The compositions may conveniently be presented in unit dosage form and may be prepared by any of the methods well known in the art. The most suitable route of administration in any given case may depend upon the nature and severity of the condition being treated, and the particular active compound which is being used. The formulations may conveniently be presented in unit dosage form and may be prepared by any of the methods well known in the art.
In the manufacture of a medicament according to the invention (a "formulation"), active agents or the physiologically acceptable salts thereof (the "active compound") are typically admixed with, inter alia, an acceptable carrier. The carrier must, of course, be acceptable in the sense of being compatible with any other ingredients in the formulation and must not be deleterious to the patient. The carrier
may be a solid or a liquid, or both, and is preferably formulated with the compound as a unit-dose formulation, for example, a tablet. One or more active compounds may be incorporated in the formulations of the invention (e.g., the formulation may contain one or more additional anti-tubercular agents as noted above), which formulations may be prepared by any of the well known techniques of pharmacy consisting essentially of admixing the components, optionally including one or more accessory therapeutic ingredients.
Formulations of the present invention suitable for parenteral administration comprise sterile aqueous and non-aqueous injection solutions of the active compound, which preparations are preferably isotonic with the blood of the intended recipient.
These preparations may contain anti-oxidants, buffers, bacteriostats and solutes which render the formulation isotonic with the blood of the intended recipient. Aqueous and non-aqueous sterile suspensions may include suspending agents and thickening agents. The formulations may be presented in unit\dose or multi-dose containers, for example sealed ampoules and vials, and may be stored in a freeze-dried (lyophilized) condition requiring only the addition of the sterile liquid carrier, for example, saline or water-for- injection immediately prior to use. Extemporaneous injection solutions and suspensions may be prepared from sterile powders, granules and tablets of the kind previously described. Formulations suitable for oral administration may be presented in discrete units, such as capsules, cachets, lozenges, or tablets, each containing a predetermined amount of the active compound; as a powder or granules; as a solution or a suspension in an aqueous or non-aqueous liquid; or as an oil-in-water or water-in-oil emulsion. Such formulations may be prepared by any suitable method of pharmacy which includes the step of bringing into association the active compound and a suitable carrier (which may contain one or more accessory ingredients as noted above). In general, the formulations of the invention are prepared by uniformly and intimately admixing the active compound with a liquid or finely divided solid carrier, or both, and then, if necessary, shaping the resulting mixture. For example, a tablet may be prepared by compressing or molding a powder or granules containing the active compound, optionally with one or more accessory ingredients. Compressed tablets may be prepared by compressing, in a suitable machine, the compound in a free- flowing form, such as a powder or granules
optionally mixed with a binder, lubricant, inert diluent, and/or surface active/dispersing agent(s). Molded tablets may be made by molding, in a suitable machine, the powdered compound moistened with an inert liquid binder. Formulations for oral administration may optionally include enteric coatings known in the art to prevent degradation of the formulation in the stomach and provide release of the drug in the small intestine.
Formulations suitable for buccal (sub-lingual) administration include lozenges comprising the active compound in a flavored base, usually sucrose and acacia or tragacanth; and pastilles comprising the compound in an inert base such as gelatin and glycerin or sucrose and acacia. Formulations suitable for topical application to the skin preferably take the form of an ointment, cream, lotion, paste, gel, spray, aerosol, or oil. Carriers which may be used include vaseline, lanoline, polyethylene glycols, alcohols, transdermal enhancers, and combinations of two or more thereof.
Formulations suitable for transdermal administration may be presented as discrete patches adapted to remain in intimate contact with the epidermis of the recipient for a prolonged period of time. Formulations suitable for transdermal administration may also be delivered by iontophoresis (see, e.g., Pharmaceutical Research 3, 318 (1986)) and typically take the form of an optionally buffered aqueous solution of the active compound. The following Examples are provided to more fully illustrate the present invention and should not be construed as restrictive thereof.
As used in the following Examples, ATP means adenosine 5'-triphosphate, PPADS means pyridoxal phosphate 6-azophenyl 2', 4'-disulphonic acid; MeATP means adenosine-5'methylenetriphosphate, ( ,β) or (β,γ) isomers; 2MeSATP means 2- methylthioadenosine 5 '-triphosphate; DEAE means diethylaminoethyl; DMSO means dimethylsulfoxide; FAB means fast atom bombardment (mass spectroscopy); HPLC means high pressure liquid chromatography; HRMS means high resolution mass spectroscopy; PAPS means adenosine-3'-phosphate-5' phosphosulfate; TBAP means tefrabutylammonium phosphate; TEAA means triethylammonium acetate; TEAB means triethylammonium bicarbonate; and TLC means thin-layer chromatography.
In the following Examples, adenosine 3'-phosphate, 5 '-phosphosulphate,
adenosine 3',5'-bz,sphosphate, adenosine 2',5'-bz'sphosphate, and (-) isoproterenol (+)- bitartrate, nucleosides, nucleotides, 23 - 26, (άz phosphate analogues), and reagents used for the syntheses described below were obtained from Sigma Chemical Company (St. Louis, MO). 2MeSATP was obtained from Research Biochemicals Inc. (Natick, MA). 2-[3H]myo-inositol (20 Ci/mmol) was obtained from American Radiolabeled
Chemicals, Inc. (St. Louis, MO). Inositol-free DMEM was obtained from Gibco BRL (Grand Island, NY).
The purity of the compounds synthesized as described in the following Examples was determined by a Hewlett-Packard 1090 HPLC apparatus using SMT OD- 5-60 RP-C18 (250 x 4.6 mm; Separation Methods Technologies, Inc., Newark, DE) as an analytical column in two solvent systems, as follows:
System A: linear gradient solvent system: 0.1 M TEAA/CH3CN from 95/5 to 40/60 in 20 min; flow rate 1 mL/min.
System B: linear gradient solvent system: 5 mM TBAP/CH3CN from 80:20 to 40/60 in 20 min; flow rate 1 mL/min.
Peaks were detected by UV absorption using a diode array detector. Purification of the synthesized nucleotides was carried out on DEAE-A25 Sephadex columns as described above. All compounds synthesized according to the Examples below exhibited more than 95% purity in HPLC system.
In the Examples below, Η-NMR spectra were obtained with a Varian Gemini-
300 spectrometer using D20 as a solvent. 31P-NMR spectra were recorded at room temperature by use of Varian XL-300 spectrometer (121.42 MHz); orthophosphoric acid
(85%>) was used as an external standard. High resolution FAB (fast atom bombardment) mass spectrometry was performed with JEOL SX102 spectrometer using 6-kV Xe atoms following desorption from a glycerol matrix.
Example 1 : Materials and Methods Cell Culture
C6 rat glioma cells were grown in Dulbecco's Modified Eagle's Medium
(DMEM) supplemented with 5% fetal calf serum in a humidified atmosphere of 95 %> air and 5%> CO2. Cells were passaged by trypsinization. Experiments were carried out with confluent cell cultures 2-4 days after plating in 12-well clusters as previously described in J. L. Boyer et al., Br. J. Pharmacol. 116, 2611-2616 (1995). 1321N1 human astrocytoma cells stably expressing the human or turkey P2Y, receptor, or the human
P2Y2 receptor (P2U-purinergic receptor), or the human P2Y4-receptor, or the human or rat P2Y6-receptor, were grown in DMEM supplemented with 5%. fetal calf serum and
600 μg/mL G-418.
Example 2: Materials and Methods Turkey Erythrocyte Labeling Fresh blood was obtained from female turkeys by venous puncture and collected into a heparinized syringe. Erythrocytes were washed twice by centrifugation and resuspension with sterile DMEM, followed by a final wash in inositol-free DMEM. One mL of washed packed erythrocytes was resuspended in a final volume of 4.2 mL of inositol-free DMEM in the presence of 0.5 mCi [3H]inositol. Cells were incubated in a stirred glass vial for 16-20 h at 37°C in a humidified atmosphere of 95% air, 5 % CO2 as previously described in J. L. Boyer, et al, J. Biol. Chem. 264, 884-890 (1989).
Example 3 Turkey erythrocvte/Phospholipase C assay P2Y! receptors activate phospholipase C, which consequently results in the generation of inositol phosphates and diacyl glycerol from phosphatidyl inositol(4,5)/3z',sphosphate. This receptor has been extensively studied in turkey erythrocyte membranes, and this system has been applied to identify molecules that have antagonistic (B.Fischer et al., J. Med. Chem. 1993, 36, 3937-3946; J.L. Boyer, Br. J. Pharmacol. 1996, 118, 1959-1964) or competitive antagonistic (J.L. Boyer et al., Br.
J. Pharmacol. 1994, 113, 614-620; J. L.Boyer, et al., Mol. Pharmacol. 50, 1323-1329 (1996)) properties toward P2Y, receptors. 2-MeSATP has a high potency for stimulation of inositol phosphate accumulation in membranes isolated from [3H]inositol-
labelled turkey erythrocytes. The analogues α,β-MeATP and β,γ-MeATP, which are potent as P2X receptor agonists, show little or no effect at the turkey erythrocyte P2Y, receptor.
P2Y, receptor-promoted stimulation of inositol phosphate formation by adenine nucleotide analogues described herein was measured in turkey erythrocyte membranes as previously described. T.K. Harden et al., Biochem. J. 252, 583-593 (1988); J.L. Boyeret al., JBiol Chem 264, 884-90 (1989). The K^ values were averaged from 3-8 independently determined concentration-effect curves for each compound. Erythrocyte ghost membranes were prepared from [3H]inositol-labeled cells by hypotonic lysis in 15 volumes of a buffer containing 5 mM sodium phosphate, pH 7.4, 5 mM MgCl2, and 1 mM EGTA (lysis buffer). The membranes were washed three times by centrifugation and resuspension with lysis buffer. The final resuspension was in 20 mM Hepes, pH 7.0, to a concentration of 6 mg protein/mL. This preparation was used immediately for assay of phospholipase C. Twenty five μl of labeled membranes (approximately 150 μg protein; 200,000 cpm) was combined in a final volume of 200 μl of a medium containing 0.91 mM MgSO4, 115 mM KC1, 5 mM potassium phosphate, 0.424 mM CaCl2, 2 mM EGTA, 10 mM Hepes, pH 7.0 (free Ca++ concentration was approximately 1 μM). Since receptor and G-protein-promoted activation of phospholipase C in turkey erythrocyte membranes is strictly dependent on the presence of guanine nucleotides, the non-hydrolyzable analogue of GTP, GTPγS (1 μM) was included in the assay. Membranes were incubated for 5 min at 30°C with the indicated concentrations of adenine nucleotide analogues. Incubations were terminated by addition of 1 mL of ice cold chloroform:methanol (1 :2 by volume) followed by 350 μl of chloroform and 350 μl of water. Samples were mixed and centrifuged, and 1 mL of the aqueous upper phase was diluted with 8 mL of water and transferred onto Dowex AG-X8 columns (formate form). Columns were washed with 8 mL of 200 mM ammonium formate, 100 mM formic acid, and the eluant was discarded. Total inositol phosphates (IP2 through IP4) were eluted with 5 mL of 1.2 M ammonium formate, 100 mM formic acid, and collected in scintillation vials. [3H]Inositol phosphates were quantitated by scintillation spectroscopy.
Inositol phosphate accumulation in 1321N1 human astrocytoma cells expressing the cloned human P2Y,, P2Y2, P2Y4, or the human or rat P2Y6 receptors was measured as described previously in E. R. Lazarowski, Br. J. Pharmacol. 116, 1619-1627 (1995).
Example 4 Data analysis
Agonist potencies were calculated using a four parameter logistic equation and the GraphPad software package (GraphPad, San Diego, CA). All concentration effect curves were repeated in at least three separate experiments using duplicate or triplicate assays.
Example 5 Activity of adenosine 3 '-phosphate, 5'-phosphosulphate at the Turkey Erythrocyte P2Y receptor
The activity of adenosine 3 '-phosphate, 5 '-phosphosulphate at the turkey erythrocyte P2Y receptor was examined in order to determine whether sulfate- containing analogues of adenine nucleotides might be potent P2Y receptor agonists that are more resistant to hydrolysis by ectonucleotidases. Relatively small effects of adenosine 3 ' -phosphate, 5 ' -phosphosulphate on inositol phosphate formation occurred
(FIG. 1), although detailed analyses illustrated that this stimulation was both concentration-dependent and apparently saturable with an EC50 of 0.83 + 0.08 μM (FIG. 1 and Table 2). The maximal effect of adenosine 3 '-phosphate, 5 '-phosphosulphate relative to that of 2MeSATP, ATP, and ADP was somewhat variable, but typically ranged from 10% to 25% of the maximal full agonist effect (Table 2).
Table 2. Potency and efficacy of adenine nucleotide analogs on the P2Y receptor of turkey erythrocytes.
Each value represents the mean ± SEM of at least four experiments carried out with different membrane preparations.
* Relative efficacies of adenine nucleotides were determined by comparison with that produced by a maximal effective concentration of 2MeSATP in the same experiment.
The capacity of adenosine 3'-phosphate, 5 '-phosphosulphate to augment or inhibit the effects of a submaximal concentration of 2MeSATP was also determined, adenosine 3 '-phosphate, 5 '-phosphosulphate antagonized the stimulatory effect of 10 nM 2MeSATP (FIG. 2) over the same concentration range necessary to observe the stimulatory effects of adenosine 3 '-phosphate, 5 '-phosphosulphate alone. This result suggests that the effect of adenosine 3 '-phosphate, 5 '-phosphosulphate occurred as a consequence of binding to the P2Y receptor rather than as a result of interaction with another of the components that comprise the receptor-regulated phospholipase C response.
Example 6
Interaction of adenosine 3'-phosphate, 5'-phosphosulphate with the P2Y receptor
To further assess the potential interaction of adenosine 3'-phosphate, 5'- phosphosulphate with the P2Y receptor, the concentration dependence of the effects of adenosine 3 '-phosphate, 5 '-phosphosulphate was examined over a broad range of
concentrations (1-1000 nM) of 2MeSATP (FIG. 2). adenosine 3'-phosphate, 5'- phosphosulphate produced a concentration-dependent antagonism of the effects of 2MeSATP at all concentrations of 2MeSATP above 3 nM (FIG. 2). Moreover, adenosine 3'-phosphate, 5 '-phosphosulphate caused a concentration dependent parallel rightward shift of the concentration effect curve of 2MeS ATP (FIG. 3 A). Schild analysis (FIG. 3B) confirmed that the antagonism was apparently competitive, and the pKB of adenosine 3 '-phosphate, 5 '-phosphosulphate was 6.46 + 0.17. This apparent potency of adenosine 3'-phosphate, 5 '-phosphosulphate is 10-fold greater than that of ATP (4.23 + 1.52 μM) for stimulation of inositol lipid hydrolysis in the same membranes.
Example 7 Effect of sulfate substitution on antagonist activity
Activities of compounds with structures related to adenosine 3'-phosphate, 5'- phosphosulphate were examined to establish whether sulfate substitution at the 5' position of ATP or substitution at the 3' position is important for conferring antagonist activity. Antagonism appears to be unrelated to 5'-sulfate-substitution since adenosine 3',5'-bisphosphate_also was a partial agonist with an EC50 for activation of 2.23 + 0.84 μM and a maximal effect that ranged from 4-35%> of the maximal effect observed with 2MeSATP (Table 2). adenosine 3',5'-bisphosphate also caused a parallel rightward shift of the 2MeSATP concentration effect curve (FIG. 3C), and a calculated pKB of 5.66 + 0.21 was determined from Schild regressions with slopes not significantly different from unity (FIG. 3D). Thus, adenosine 3',5'-bisphosphate also appears to interact with the P2Y receptor with a potency that is greater than or equal to that of the parent ATP molecule. Effects identical to those of adenosine 3 ',5 '-bisphosphate were observed with the isomer adenosine 2 ',5 '-bisphosphate (Table 2).
Partial agonist activity also was observed with other adenosine 3'- and 2'- phosphate analogues such as adenosine 2 '-phosphate 5 '-phosphosulfate, and adenosine 2'-phosphate 5'-phosphoribose (data not shown). Adenosine 5 '-phosphosulfate (FIG. 1) and adenosine 5 '-diphosphoribose were full agonists (data not shown) indicating that substitution with phosphate in the 2'- or 3 '- positions of adenine nucleotides is required
for antagonistic activity. Other 2' or 3' substitutions did not confer antagonistic properties to adenine nucleotides. For example, 3 '-amino ATP and 3'-benzoylbenzoyl
ATP were full agonists, and 3'-N-benzylamino ATP was a very weak agonist devoid of any antagonist activity (data not shown).
Example 8
Selectivity of adenosine 3 '-phosphate, 5'-phosphosuIphate and adenosine 3',5'- bisphosphate at Phospholipase C-coupled
P2Y Receptor: Effects on β-adrenergic receptor The selectivity of the effects of adenosine 3 '-phosphate, 5 '-phosphosulphate and adenosine 3 ',5 '-bisphosphate was confirmed by examining their effects at the phospholipase C-coupled β-adrenergic receptor natively expressed in turkey erythrocytes. In contrast to the effects of adenosine 3 '-phosphate, 5 '-phosphosulphate and adenosine 3 ',5 '-bisphosphate on 2MeSATP-stimulated inositol lipid hydrolysis, the agonist effects of these 3 '-phosphate-substituted analogues were additive to a maximally effective concentration of the β-adrenergic agonist isoproterenol (FIG. 4). These results indicate that 3 '-phosphate adenine nucleotide analogues interact specifically with the P2Y receptor of turkey erythrocyte membranes and not with other components of the receptor-phospholipase C cascade.
Example 9
Effects of adenosine 3'-phosphate, 5'-phosphosulphate and
Adenosine 3',5'-bisphosphate on Cloned P2Y,
Receptor Expressed in Human Astrocytoma Cells The effects of adenosine 3'-phosphate, 5 '-phosphosulphate and adenosine 3',5'- bisphosphate were determined in 1321N1 human astrocytoma cells stably expressing the cloned receptors. Antagonist activities very similar to those observed with turkey erythrocyte membranes were observed with the expressed turkey P2Y, receptor (data not shown). In contrast to the results with the turkey erythrocyte P2Y receptor, adenosine 3'-phosphate, 5 '-phosphosulphate (data not shown) and adenosine 3 ',5'- bisphosphate (FIG. 5) exhibited no partial agonist activity and were simple competitive antagonists at the human P2Y, receptor. The calculated pKB (6.05 + 0.01) for adenosine 3 ',5' -bisphosphate was essentially the same as that observed in the turkey erythrocyte
membrane preparation (FIG. 5).
Example 10 Selectivity of adenosine 3'-phosphate, 5'-phosphosulphate and adenosine 3',5'-bisphosphate for the P2Y, receptor: Effects at other P, receptors
The selectivity of adenosine 3 '-phosphate, 5 '-phosphosulphate and adenosine
3',5'-bisphosphate for the P2Y, receptor was tested by examining their effects at other
P2 receptors. No effect of either compound as agonists or antagonists was observed at the P2Y receptor of C6 rat glioma cells (FIG. 6). It has been previously shown that this adenylyl cyclase-linked P2 receptor differs from the phospholipase C-coupled P2Y, receptor in specificity of second messenger signaling and pharmacological selectivity (J. L. Boyer, et al., Br. J. Pharmacol. 116, 2611-2616 (1995)). adenosine 3'-phosphate, 5'- phosphosulphate and adenosine 3 ',5 '-bisphosphate also were neither antagonists nor agonists at the human P2Y2 (Table 3), the human P2Y4 (data not shown), or the rat
P2Y6 (data not shown) receptors stably expressed in 1321N1 cells.
Table 3. Effect of adenosine 3'-phosphate, 5'-phosphosuIphate and adenosine 3',5'-bisphosphate on the human P2Y2 receptor stably expressed in 1321N1 cells.
Nucleotide Inositol Phosphates (cpm)
Basal 5534 ± 679
UTP 25730 ± 1445 adenosine 3 '-phosphate, 5 '-phosphosulphate 5129 + 727 adenosine 3 '-phosphate, 5 '-phosphosulphate + UTP 34875 + 7176 adenosine 3 ',5 '-bisphosphate 4553 + 458 adenosine 3 ',5 '-bisphosphate + UTP 27952 + 675
Data shown are the mean + S.E.M. of values from at least three different experiments.
Example ll Preparation of Deoxyadenosine Compounds 4-22
The general procedure for phosphorylation of nucleosides was as follows:
Nucleoside (0. 1 mmol) and Proton Sponge® (107 mg, 0.5 mmol) were dried for several hours in high vacuum at room temperature and then suspended in 2 mL of trimethyl phosphate. Phosphorous oxychloride (37 μL, 0.4 mmol) was added, and the mixture was stirred for 1 h at 0°C. The reaction was monitored by analytical HPLC (eluting with gradient from buffer:CH3CN = 95:5 to 40:60; buffer: 0.1 M triethylammonium acetate (TEAA); elution time: 20 min; flow rate: 1 mL/min; column: SMT OD-5-60 RP- Cl 8; detector: UV, Emax « 260-300 nm). The reaction was quenched by adding 2 mL of triethylammonium bicarbonate buffer and 3 mL of water. The mixture was subsequently frozen and lyophilized. Purification was performed on an ion-exchange column packed with Sephadex DEAE A-25 resin, linear gradient (0.01 to 0.5M) of 0.5M ammonium bicarbonate was applied as the mobile phase, and UV and HPLC were used to monitor the elution. All nucleotides (4 - 22) were collected, frozen and lyophilized as the ammonium salts. The synthesis data, )including 'HNMR and 31P- NMR results for compounds 4-22 are summarized in Table 4, below. The syntheses pf the individual compounds is as follows:
2'-Deoxyadenosine-3',5'-bis(diammonium phosphate) (Compound 4)
Starting from 25 mg (0.099 mmol) of 2'-deoxyadenosine and following the general procedure, 21 mg (0.044 mmol, 44% yield) of the desired compound 4 was obtained.
1H-NMR (D20) d 2.79, (2H, m CH2-2'); 4.09, (2H, m, CH2-5'); 4.47, (1H, bs, H4');5.02, (1H, m, H3'); 6.54, (1H, tJ= 6.9 Hz, HI'); 8.25, (1H, s, H2); 8.48, (1H, s, H8).
31P-NMR (D20) d -0.127 (d, J- 18.27 Hz, P-3); 0.628, (pt, P-5').
2'-Deoxy-(N1-methyl)adenosine-3',5'-bis(ammonium phosphate) (Compound 5)
Starting from 10 mg (0.025 mmol) of 2'-deoxy-N1-methyladenosine and following the general procedure, 8.2 mg (0.017 mmol, 69% yield) of the desired compound 5 was obtained. 'H-NMR (D20) d 2.78 and 2.94, (2H, 2m, CH2-2'); 3.92, (3H, s, N'-CH3); 4.08, (2H, bs,
CH2-5'); 4.46, (IH, bs, H4'); 5.01, (IH, m H3'); 6.59, (IH, t, J= 6.8 Hz, HI'); 8.52, (IH, s,
H2); 8.64, (IH, s, H8).
31P-NMR (D20) d 0.693 (bs, P-3'); 1.176, (bs, P-5').
2-Chloro-2'-deoxyadenosine-3',5'-bis(diammonium phosphate) (Compound 6)
Starting from 25 mg (0.088 nmol) of 2-chloro-2'-deoxyadenosine and following the general procedure 26 mg (0.051 mmol 58% yield) of the desired compound 6 was obtained.
'H-NMR (D20) d 2.77, (2H, m CH2-2'); 4.04, (2H, m CH2-5*); 4.42, (IH, bs, H4'); 4.94, (IH, m, H3'); 6.41, (IH, t, J= 6.9 Hz, HI'); 8.45, (IH, s, H8).
31P-NMR (D20) d 1.436 (d, J= 18.45 Hz, P-3'); 1.820, (pt, P-5').
2'-Deoxy-2-methylthioadenosine-3',5,-bis(diammonium phosphate) (Compound 7)
Starting from 20 mg (0.067 mmol) of 2'-deoxy-2-methylthioadenosine and following the general procedure 17 mg (0.032 mmol 48%> yield) of the desired compound 7 was obtained.
Η-NMR (D2O) a 2.51, (3H, s, CH3-S); 2.75 and 2.90, (2H, 2m, CH2-2'); 4.07, (2H, m
CH2-5'); 4.42, (IH, bs, H4'); 5.00, (IH, m H3'); 6.44, (IH, tJ= 6.8 Hz, HI'); 8.27, (IH, s,
H8). 31P-NMR (D20) d -0.214 (d, J= 17.25 Hz, P-3'); 0.553, (pt, P-5*).
8-Bromo-2'-deoxyadenosine-3',5'-bis(diammonium phosphate) (Compound 8)
Starting from 25 mg (0.076 mmol) of 8-bromo-2'-deoxyadenosine and following the general procedure 14 mg (0.025 mmol 33%> yield) of the desired compound 8 was obtained.
'H-NMR (D20) d 2.65 and 3.44, (2H, 2m, CH2-2'); 4.15, (2H, m CH2-5'); 4.34, (IH, m, H4'); 5.11, (IH, m, H3'); 6.55, (IH, t, J= 6.8 Hz, HI'); 8.20, (IH, s, H2). 31P-NMR (D20) d -0.109 (d, J= 18.09 Hz, P-3'); 0.652, (pt, P-5').
2'-Deoxy-N6-methyladenosine-3,,5'-bis(diammonium phosphate) (Compound 9)
Starting from 25 mg (0.094 mmol) of 2'-deoxy-N6-methyladenosine and following the general procedure 19 mg (0.039 mmol 41 > yield) of the desired
compound 9 was obtained.
Η-NMR (D20) d 2.77, (2H, m CH2-2'); 2.99, (3H, s, NH-CH3J; 4.07, (2H, bs, CH2-5');
4.44, (IH, bs, H4'); 4.97, (IH, m, H3'); 6.40, (IH, t, J =6.9 Hz, HI'); 8.07, (IH, s, H2); 8.32, (IH, s, H8). 31P-NMR (D20) d -0.129 (d, J= 16.95 Hz, P-3*); 0.623, (pst P-5').
2,-Deoxy-N6-ethyladenosine-3',5'-bis(diammonium phosphate) (Compound 10)
Starting from 12 mg (0.043 mmol) of 2'-deoxy-N6-ethyladenosine and following the general procedure 8.8 mg (0.017 mmol, 40% yield) of the desired compound 10 was obtained.
'H-NMR (D20) δ 1.27, (3H, m CH2CHj); 2.77, (2Η, m CΗ2-2'); 3.57, (2H, m,
NHCH2λ' 4.00, (2H, bs, CH2-5'); 4.40, (lH, bs, H4'); 4.89, (lH, m, H3'); 6.49, (IH, pt, HI'); 8.23, (IH, s, H2); 8.50, (IH, s, H8).
31P-NMR (D20) d -0.128 (d J = 16.59 Hz, P-3'); 0.628, (pt, P-5').
2'-Deoxy-N6-propyladenosine-3',5'-bis(diammonium phosphate) (Compound 11) Starting from 13 mg (0.044 mmol) of 2'-deoxy-N6-propyladenosine and following the general procedure 9.4 mg (0.018 mmol, 41%> yield) of the desired compound 11 was obtained. 'H-NMR (D20) d 0.95, (3H, t, J= 6.8 Hz, CH2CHi); 1.65, (2H, q, J = 6.8, 6.8 Hz,
CH2CH3); 2.76, (2H, m, CH2-2'); 3.45, (2H, m, NHCH2); 4.06, (2H, bs, CH2-5');
4.45, (lH, bs, H4'); 4.98, (lH, m, H3'); 6.48, (IH, t, J = 6.8 Hz, HI'); 8.17, (IH, s, H2); 8.39, (IH, s, H8).
31P-NMR (D20) d -0.03 (d, J= 18.09 Hz, P-3'); 0.670, (pt, P-5').
N6-Benzoyl-2'-deoxyadenosine-3',5,-bis(diammonium phosphate) (Compound 12) Starting from 25 mg (0.070 mmol) of N6-benzoyl-2'-deoxyadenosine and following the general procedure, 22 mg (0.038 mmol, 54% yield) of the desired compound 12 was obtained. 'H-NMR (D20) d 2.85, (2H, m, CH2-2'); 3.96, (2H., bs, CH2-5'); 4.43, (IH, bs, H4');
4.84,(1H, m, H3'); 6.62,(1H, pt HI'); 7.46, (2H, d, J=6.8 Hz,Ph); 7.57, (IH, d, J=6.8
Hz, Ph); 7.88,(2H, d, J= 6.8 Hz, Ph); 8.66, (IH, s, H2); 8.81, (IH, s, H8).
3'P-NMR (D20) d 3.285 (d, J= 16.26 Hz, P-3'); 3.765, (pt, P-5').
2'-Deoxy-N6-dimethyIadenosine-3',5'-bis(diammonium phosphate) (Compound 13)
Starting from 18 mg (0.064 mmol) of 2'-deoxy-N6-dimethyladenosine and following the general procedure, 15 mg (0.029 mmol 46%> yield) of the desired compound 13 was obtained.
'H-NMR (D20) d 2.75, (2H, m, CH2-2'); 3.23, (6H, s, N(CH3)2); 4.04, (2H, m, CH2-5'); 4.42, (IH, bs, H4'); 4.95, (lH,m, H3'); 6.38, (IH, t, J=6.8 Hz, HI'); 7.96, (IH, s, H2); 8.28, (IH, s, H8). 31P-NMR (D20) a 0.403 (bs, P-3'); 1.017, (bs, P-5').
6-Chloro-2'-deoxypurineriboside-3',5,-bis(diammonium phosphate) (Compound 14)
Starting from 10 mg (0.037 mmol) of 6-chloro-2'-deoxypurineriboside and following the general procedure, 12 mg (0.024 mmol 65% yield) of the desired compound 14 was obtained.
Η-NMR (D20) a 2.85, (2H, m, CH2-2')., 4.00, (2H, bs, CH2-5'); 4.43, (IH, bs, H4'); 4.91,
(IH, m, H3'); 6.65, (IH, t, J=6.8 Hz, HI'); 8.72, (IH, s, H2); 8.93, (IH, s, H8).
3,P-NMR. (D20) 1.954 (d, J= 18.09 Hz, P-3'); 2.253, (pt, P-5').
2,-Deoxyinosine-3',5'-bis(diammonium phosphate) (Compound 15)
Starting from 25 mg (0.079 mmol) of 2'-deoxyinosine and following the general procedure, 8.4 mg (0.017 mmol, 22% yield) of the desired compound 15 was obtained.
Η-NMR (D20) a 2.85, (2H, m CH2-2'); 4.09, (2H, bs, CH2-5'); 4.47, (IH, bs, H4'); 5.01, (IH, bs, H3'); 6.55, (IH, t, J=6.8 Hz, HI'); 8.22, (IH, s, H2); 8.51, (IH, s, H8).
31P-NMR (D20) a -0.234 (d, J= 17.25 Hz, P-3'); 0.543, (pt, P-5').
2,-Deoxy-6-methylthiopurineriboside-3',5'-bis(diammoniumphosphate) (Compound 16) Starting from 18 mg (0.064 mmol) of 2'-deoxy-6-methylthiopurineriboside and following the general procedure, 13 mg (0.025 mmol, 39% yield) of the desired compound 16 was obtained.
'H-NMR (D20) a 2.66, (3H, s, SCH3); 2.85, (2H, m, CH2-2'); 4.03, (2H, d, J= 3.9 Hz,
CH2-5'); 4.44, (IH, s, H4'); 4.94, (IH, m, H3'); 6.58, (IH, t, J= 6.8 Hz, HI'); 8.60, (IH, s,
H2); 8.69, (IH, s, H8).
3,P-NMR (D20) 1.588 (d, J= 17.76 Hz, P-3*); 1.942, (pt, P-5').
3'-Deoxyadenosine-2',5'-bis(diammonium phosphate) (Compound 17) and
5'-chloro-3'-deoxyadenosine-2'-(diammonium phosphate) (Compound 19)
Starting from 25 mg (0.099 mmol) of 3'-deoxyadenosine and following the general procedure, 16 mg (0.033 mmols, 34%> yield) of desired compound 17 was obtained, and 7.2 mg (0.021 mmol, 21%> yield) of 5'-chloro derivative 19 was obtained. as a by-product.
17: 'H-NMR (D20) d 2.42, (2H, m, CH2-3'); 3.98, (IH, m, CH2-5'); 4.18, (IH, m, CH2-
5*); 4.75, (IH, bs, H4'); 5.08, (IH, m, H2'); 6.22, (IH, s, HI'); 8.14, (IH, s, H2); 8.41, (IH, s, H8). 31P-NMR (D20) a 0.337 (d, J= 18.12 Hz, P-3'); 1.220, (t, J = 11 .89 Hz, P-5').
19: 'H-NMR (D20) 32.51, (2H, m, CH2-3'); 3.88, (2H, d^q, J=22.5, 12.9, 3.9 Hz, CH2-
5'); 4.84, (IH, bs, H4'); 5.23, (IH, m, H2'); 6.25, (IH, s, HI'); 8.20, (IH, s, H2); 8.33, (IH, s, H8).
31P-NMR (D20) a 0.312 (d, J= 18.27 Hz, P-3').
3'-Deoxy-N6-methyladenosine-2',5'-bis(diammonium phosphate) (Compound 18) Starting from 25 mg (0.094 mmol) of 3'-deoxy-N6-methyladenosine and following the general procedure 10.4 mg (0.021 mmol, 22% yield) of the desired compound 18 was obtained. 'H-NMR (D20) d 2.41,(2H, m, CH2-3*); 3.05,(3H, s, NH-CH3J; 4.01, (1Η, m, CΗ2-5');
4.20, (IH, m, CH2-5'); 4.72, (IH, bs, H4'); 5.07, (IH, m, H2'); 6.22, (IH, s, HI'); 8.20,
(IH, s, H2); 8.36, (IH, s, H8).
31P-NMR (D20) -0.098 (d, J = 19.60 Hz, P-3'); 0.900, (pt, P-5').
2'-Deoxy-2'-O-methyladenosine-3',5,-bis(diarnmonium phosphate) (Compound 20)
Starting from 10 mg (0.036 mmol) of 2'-deoxy-2'-O-methyladenosine and following the general procedure, 3 mg (0.006 mmol 17% yield) of the desired
compound 20 was obtained.
'H-NMR (D20) 3.49, (3H, s, OCH3); 4.08, (2H, m, CH2-5'); 4.57, (2H, bs, H2'+H4');
4.92, (IH, m, H3'); 6.22, (IH, d, J=5.9 Hz, HI'); 8.25, (IH, s, H2); 8.59, (IH, s, H8).
31P-NMR (D20) a 1.470 (d, J= 19.44 Hz, P-3'); 2.016, (pst, P-5').
2'-Deoxyadenosine-3',5'-bis(diammonium thiophosphate) (Compound 21)
Starting from 50 mg (0.2 mmol) of 2'-deoxyadenosine and following the general procedure, but using thiophosphoryl chloride (81 μL, 0.8 mmol), 18 mg (0.036 mmol,
18% yield) of the desired compound 21 was obtained. 'H-NMR (D20) 32.42, (IH, m,CH2-2'); 2.61,(1H, m,CH2-2'); 3.83,(2H, pt, CH2-5');
4.11,(1H, m, H4'); 4.55, (IH, m,H3'); 6.21,(1H, t, J=6.8 Hz, HI'); 7.89, (IH, s, H2); 8.32,
(IH, s, H8).
31P-NMR (D20) a 37.716 (pd, P-3'); 43.637, (pt, P-5').
2'-Deoxy-N',N6-ethenoadenosine-3',5'-bis(diammonium phosphate) (Compound 22)
Starting from 25 mg (0.091 mmol) of 2'-deoxy-N',N6-ethenoadenosine and following the general procedure 19.3 mg (0.038 mmol 42%> yield) of the desired compound 22 was obtained.
Η-NMR (D20) 2.88 (2H, m, CH2-2'); 4.10, (2H, m, CH2-5'); 4.46, (IH, s, H4'); 5.02, (IH, m, H3'); 6.51, (IH, t J=6.8 Hz, HI'); 7.46, (lH,bs,etheno); 7.84, (IH, bs, etheno);
8.43, (IH, s, H2); 8.93, (IH, s, H8). 31P-NMR (D20) a 0.113 (d J = 16.59 Hz, P-3'); 0.779, (pt, P-5').
Table 4. Synthetic data for nucleotide derivatives, including structural verification using high resolution mass spectroscopy and purity verification using HPLC.
FAB i (M-H+) HPLC (rt; min)a
No. Formula Calcd Found System A System B Yields (%)
4 C10HI5O9N5P2 410.0267 410.0249 5.98 11.51 44
5 CnH17O9N5P2 424.0423 424.0428 3.66 6.42 69
6 C10H14C1O9N5P2 443.9877 443.9872 7.20 12.14 58
7 CnH17O9N5P2S 456.0144 456.0122 8.14 12.98 48
8 C10H14BrO9N5P2 487.9372 487.9355 6.66 12.06 33
9 CπH17O9N5P2 424.0423 424.0404 6.93 12.32 41
10 C12H19O9N5P2 438.0580 438.0580 7.95 12.83 40
11 C13H21O9N5P2 452.0736 452.0734 8.97 13.55 41
12 C17H19O10J 5r2 514.0529 514.0538 9.58 13.67 54
13 C12H19O9N5P2 438.0580 438.0582 8.30 12.72 46
14 C10H13C1O9N4P2 428.9768 428.9752 6.87 12.54 65
15 C10H14O10N5P2 411.0107 411.0102 4.58 11.64 22
16 CnH16O9N4P2S 441.0035 441.0026 8.48 13.05 39
17 C10H15O9N5P2 410.0267 410.0262 5.80 11.51 34
18 CπH17O9N5P2 424.0423 424.0437 8.95 12.16 21
19 C10H13C1O5N5P 348.0265 348.0272 6.89 9.82 22
20 CnH17O!0N5P2 440.0372 440.3660 6.40 12.20 17
21 C10H15O7N5P2S2 441.9810 441.9794 6.60 10.10 18
22 C12H15O9N5P2 434.0267 434.0257 7.02 12.33 42
"purity of each derivative was > 95%, as determined using HPLC with two different mobile phases. System A: gradient of 0.1M TEAA CH3CN from 95/5 to 40/60 and system B: gradient of 5nM
TBAP/CH3CN from 80/20 to 40/60.
The percent yields refer to phosphorylation reactions.
Example 12 Biological Activity of Deoxyadenosine -Based Compounds
The deoxyadenosine nucleoside analogues prepared according to Example 11 above were tested for agonist and antagonist activity in the Phospholipase C (PLC) assay at the P2Y, receptor in turkey erythrocyte membranes. Concentration-response curves were obtained for each compound alone, and in combination with a given concentration of 2-MeSATP (10 nM). In the case of all the compounds tested, essentially no basal inositol phosphate activity was observed, and a very small stimulation occurred in the presence of 1 μM GTPγS (data not shown). Addition of 1 OnM 2-MeS ATP resulted in a marked and concentration-dependent activation of the turkey erythrocyte phospholipase C.
The removal of the unphosphorylated hydroxyl group from adenosine 3',-5'- bz'sphosphate and adenosine 2',3'-όωphosphate resulted in compounds 4 and 17, respectively. These compounds are similar to their parent hydroxylated compounds in biological activity, i.e. they were both partial agonists with slightly less potency as agonists (5- to 6-fold) at P2Y, receptors (FIG. 7), but were equipotent as antagonists. The 3',5'-bisphosphate analogue, 4, was two-fold more potent as an antagonist compared to the 2',5' isomer, 17. Thus, both 2'- and 3'-deoxy modifications were tolerated in P2Y, receptor antagonists, and the potencies of each were approximately equal to the corresponding hydroxy analogue.
Modifications of these two lead structures were then studied. Structural modifications were made at the adenine ring at the 1- (Compound 5), 2- (Compounds 6 and 7), 8- (Compound 8), and 6- (Compounds 9- 16 and 18) positions, on the ribose moiety (Compounds 19,20), and on the phosphate groups (Compound 21). Additional modifications of the purine moiety such as etheno (Compound 22) and N' -methyl
(Compound 5) were also made.
Table 4. In vitro pharmacological data for stimulation of PLC at turkey erythrocyte
GraphPad software the concentration at
h h f h l ff h d R l ff (%) d d b with the effect produced by a maximal effective concentration of 2-MeSATP in the same experiment. b Antagonist IC50 values (mean ± standard error) represent the concentration needed to inhibit by 50% the effect elicited by 10 nM 2-MeSATP The percent of maximal inhibition is equal to 100 minus the residual fraction of stimulation at the highest antagonist concentration NE no effect NC not calculated
The 2-chloro-, (Compound 6), and 2-methylthio-, (Compound 7) modifications of compound 4 were nearly 3-fold more potent as P2Yt antagonists. In both cases the residual agonist stimulation of PLC, as observed for compounds 1-4 at the P2Y, receptor, was still present. The potency of compounds 6 and 7 in activating the P2Y, receptor was also enhanced, by approximately 2-fold. The 8-bromo modified analogue,
8, was 6.4-fold less potent than 4 as an antagonist at the P2Y, receptor, and agonist activity was abolished. An N' -methyl analogue, 5, was a weak antagonist (9.5-fold loss of potency vs. 4) with no agonist activity.
Alkylation of the exocyclic amine had highly consequential effects on biological activity. N6-Me-2'-deoxyadenosine3', 5'-&ώphosphate, 9, was considerably more potent
(IC50 value 330 nM) as an antagonist than either deoxyadenosine 3',5'-/ z',yphosphate (17-fold), 4, or adenosine 3 ',5 '-bisphosphate (13-fold), 1 (FIG. 8A). This analogue displayed only antagonistic properties, since in the absence of 2-MeSATP it did not activate PLC at a concentration as high as 100 μM. A dramatic dependence of the antagonist potency on the size of the N6-substituent was observed (FIG. 8). The methyl analogue, 9, was 3-fold more potent as an antagonist than the ethyl analogue, 10. In compound 11 the N6-propyl group completely abolished both agonist and antagonist properties. Similarly, the longer chain terminating in an amino group in compound 23 (containing also 3'-hydroxyl and thus an analogue of compound 3) completely abolished interaction with the P2Y, receptor. Compound 18, the 3'-deoxy isomer of 9, also acted as an antagonist at the turkey P2Y, receptor and was approximately equipotent to 9. Compound 18 showed a small activation of the receptor at high concentration. The N6- benzoyl modification, 12, completely abolished the ability of the compound to interact with P2Y, receptors as either an agonist or an antagonist. Double alkylation of the N6 amino group in compound 13 resulted in a > 300- fold loss of potency as an antagonist vs 9, and no agonist activity was observed. 6- Chloro and 6-hydroxy analogues, 14 and 15, respectively, were essentially inactive at P2Y, receptors. The 6-methylthio-analogue, 16, was only a very weak antagonist at P2Y, receptors.
Replacement of the 5'-phosphate ester with chloro, as in compound 19, abolished antagonist and agonist activity at P2Y, receptors. The presence of a 2'- methoxy group on the ribose moiety, 20, decreased potency by 2.2-fold vs 4, although a restoration of the agonist effect to a very substantial fraction (33% of maximal) was achieved. Replacement of both phosphate groups with thiophosphate, 21, diminished potency as a P2Y, receptor antagonist by 15-fold. The etheno derivative 22 was inactive at the P2Y, receptor.
Example 13 Competitive Antagonist Activity of Compound 9
The compound 2'-Deoxy-N6-methyladenosine-3',5'-bz,sphosphate (compound 9) was determined to be a potent and competitive antagonist of the P2Y, receptor.
Referring now to FIG. 9, log dose response curves of the P2Y, agonist 2MeSATP were determined in the presence of a control (circles), or 0.1 μM (diamonds), 0.3 μM (triangles), lμM (squares), 3 μM (asterisks), lOμM (crosses) and 30μM (X-es) of
Compound 9. The parallel shifting of the agonist log dose response curve to the right illustrates the competitive antagonist activity of Compound 9. Data in FIG. 9 is shown in terms of [3H] Inositol Phosphates (percenage of maximum) as a function of the log Molar concentration of 2MeSATP. FIG. 10 is the Schild regression of the data presented in FIG. 9. The calculation of the ratio of the agonist (2MeSATP) concentration that elicits equal responses in the absence and presence of antagonist (Compound 9) at increasing concentrations (termed the dose ratio) was plotted according to the relationship log(dose ratio-1) vs. log concentration (in Molar) of Compound 9. In that the slope of the line produced by the Schild regression is approximately equal to 1 (slope = 0.912), the compound 9 is indicated to be a competitive antagonist of the P2Y, receptor. FIG. 11 iillustrates the selective binding and specificity of Compound 9 to the P2Y, receptor. Inositol phosphate accumulation in 1321N1 human astrocytoma cells expressing the cloned, human P2Y, (far left), P2Y2. (second from left) , P2Y4 (second from right) or P2Y6 (far right) receptor was measured in the absence (open bars) or presence (filled bars) of Compound 9. While the presence of Compound 9 had no effect on the accumulation of inositol phosphates in cells expressing P2Y2 and P2Y6, and had the slight effect of increasing the amount of inositol
phosphates detected in cells expressing the P2Y4 receptor, the presence of Compound 9 completely inhibited the generation of inositol phosphates in cells expressing P2Y,. This result indicates that Compound 9 binds selectively to the P2Y, receptor, and further that the compound is a potent antagonist of the P2Y, receptor.
The foregoing Examples are illustrative of the present invention, and are not to be construed as limiting thereof. The invention is defined by the following claims, with equivalents of the claims to be included therein.
Claims (29)
1. A compound according to Formula I:
wherein: m is 1, 2, or 3; n is 1, 2, or 3; p is O or 1; q is 0, 1 , 2, or 3, with the proviso that when p is zero, q is not zero;
R, is selected from the group consisting of H, lower alkyl, halo, alkoxy, and alkylthio;
R2 is selected from the group consisting of hydroxy, halo, alkylthio, lower alkyl, substituted lower alkyl, and -NR'R", wherein R' and R" are each independently selected from the group consisting of H, lower alkyl, aroyl, alkoxy, alkoxy, and alkoxyalkyl;
R3 is selected from the group consisting of H, halo, and lower alkyl;
R4 is selected from the group consisting of H and lower alkyl,
X! is selected from the group consisting of O, S, N, and CH2; and X2, X3 and X4 are each independently selected from the group consisting
H, hydroxy, amino, lower alkyl, halo, alkoxy, phosphate, thiophosphate, carboxylate, and nitro, or X2 and X3 together are cyclophosphate; and the pharmaceutically acceptable salts thereof, with the proviso that: when R„ R3, and R4 are each H, and m, n, and p are each 1, and q is 1, 2, or 3, and X! is O, and X4 is phosphate, and X2 and X3 are each either hydroxy, H or phosphate or together are cyclophosphate, R2 is not -NH2.
2. A compound according to Claim 1, wherein p and q are each 1.
3. A compound according to Claim 1, wherein n is 1 and X3 is H.
4. A compound according to Claim 1, wherein m is 1 and X2 is H.
5. A compound according to Claim 1, wherein R2 is -NR'R", and wherein R' and R" are each lower alkyl.
6. A compound according to Claim 1, wherein R2 is -NR'R", and wherein
R' is H and R" is lower alkyl.
7. A compound according to Claim 6, wherein R" is methyl.
8. A compound according to Claim 1, wherein R3 is halo.
9. A compound according to Claim 1, wherein p is 0, q is 1, and X4 is Cl.
10. A compound according to Claim 1, wherein R2 is selected from the group consisting of aroyl, halo, hydroxy and alkylthio.
11. A compound according to Claim 1, wherein R, is selected from the group consisting of halo and alkylthio.
12. A compound according to Claim 1, wherein X2 is alkoxy.
13. A compound according to Claim 1, wherein X3 and X4 are each selected from the group consisting of thiophosphate and phosphate .
14. A compound according to Claim 1 selected from the group consisting of
2'-Deoxy-(N'-methyl)adenosine-3',5'-3z'5phosphate; 2-Chloro-2'-deoxyadenosine-3',5'- bz'5phosphate; 2'-Deoxy-2-methylthioadenosine-3',5'-3z5phosphate; 8-Bromo-2'- deoxyadenosine-3',5'-bisphosphate; 2'-Deoxy-N6-methyladenosine-3',5'-/3z'.sphosphate; 2'-Deoxy-N6-ethyladenosine-3',5'-/ z.sphosphate; 2'-Deoxy-N6-propyladenosine-3',5'- b 5phosphate; N6-Benzoyl-2'-deoxyadenosine-3',5'-bz'5phosphate; 2'-Deoxy-N6- dimethyladenosine-3',5'-/ z'.sphosphate; 6-Chloro-2'-deoxypurineriboside-3',5'- bz'sphosphate; 2'-Deoxyadenosine-3',5'-bz'.yphosphate; 2'-Deoxy-6- methylthiopurineriboside-3',5'-όz,sphosphate; 5'-chloro-3'-deoxyadenosine-2'-phosphate; 3'-Deoxy-N6-methyladenosine-2',5'-/ z'.sphosphate; 2'-Deoxy-2'-O-methyladenosine-3',5'- όziphosphate^'-Deoxyadenosine-S'^'-όw^hiophosphate), 2'-Deoxy-N',N6-ethenoadenosine-3',5'-/3z' phosphate, and the pharmaceutically acceptable salts thereof.
15. A compound according to Claim 1 selected from the group consisting of 2'-Deoxy-(Η'-methyl)adenosine-3',5'-bis(ammonium phosphate);2-Chloro-2'- deoxyadenosme-3',5'-bis(diammonium phosphate); 2'-Deoxy-2-methylthioadenosine- 3',5'-bis(diammonium phosphate) ;8-Bromo-2'-deoxyadenosine-3',5'-bis(diammonium phosphate) ;2'-Deoxy-N6-methyladenosine-3',5'-bis(diammonium phosphate);2'-Deoxy- N6-ethyladenosine-3',5'-bis(diammonium phosphate);2'-Deoxy-N6-propyladenosine- 3',5'-bis(diammoniιmι phosphate);N6-Berιzoyl-2'-deoxyadenosine-3',5'-bis(diammonium phosphate);2'-Deoxy-N6-dimethyladenosine-3',5'-bis(diammonium phosphate);6- Chloro-2'-deoxypurineriboside-3',5'-bis(diarnmonium phosphate);2'-Deoxyinosine-3',5'- bis(diammonium phosphate);2'-Deoxy-6-methylthiopurineriboside-3',5'- bis(diammoniumphosphate);5'-chloro-3'-deoxyadenosine-2'-(diammonium phosphate); 3'-Deoxy-N6-methyladenosine-2',5'-bis(diammonium phosphate); 2'-Deoxy-2'-O- methyladenosine-3',5'-bis(diammonium phosphate); 2'-Deoxyadenosine-3',5'- bis(diammonium thiophosphate) and
2'-Deoxy-N',N6-ethenoadenosine-3',5'-bis(diammonium phosphate).
16. A compound according to claim 1, wherein said compound has antagonist activity at the P2Y, receptor.
17. A compound according to claim 1, wherein said compound has competitive antagonist activity at the P2Y, receptor.
18. A compound according to claim 1, wherein said compound binds selectively to the P2Y, receptor.
19. A method of detecting the P2Y, receptor in a biological sample suspected of containing said P2Y, receptor, the method comprising: contacting said biological sample with a compound according to Formula I:
wherein: m is 1, 2, or 3; n is 1, 2, or 3; p is 0 or 1 ; q is 0, 1, 2, or 3, with the proviso that when p is zero, q is not zero;
R, is selected from the group consisting of H, lower alkyl, halo, alkoxy, and alkylthio;
R2 is selected from the group consisting of hydroxy, halo, alkylthio, lower alkyl, substituted lower alkyl, and -NR'R", wherein R' and R" are each independently selected from the group consisting of H, lower alkyl, aroyl, alkoxy, alkoxy, and alkoxyalkyl;
R3 is selected from the group consisting of H, halo, and lower alkyl;
R4 is selected from the group consisting of H and lower alkyl,
X, is selected from the group consisting of O, S, N, and CH2; and
X2, X3 and X4 are each independently selected from the group consisting
H, hydroxy, amino, lower alkyl, halo, alkoxy, phosphate, thiophosphate, carboxylate, and nitro, or X2 and X3 together are cyclophosphate; and the pharmaceutically acceptable salts thereof, wherein said compound of Formula I selectively binds the P2Y, receptor; and then detecting the presence or absence of binding of said P2Y, receptor antagonist to a receptor in said biological sample, the presence of binding indicating the presence of the P2Y, receptor.
20. A method according to Claim 19, wherein said compound of Formula I is selected from the group consisting of adenosine 3 ',5 '-/^phosphate and adenosine
2 ' ,5 ' -/3z phosphate.
21. A method according to Claim 19, wherein said compound is 2'-Deoxy- N6-methyladenosine-3',5'-bisphosphate.
22. A compound according to Formula 11:
wherein: m is 1, 2, or 3; n is 1, 2, or 3; p is 0 or 1 ; q is 0, 1, 2, or 3, with the proviso that when p is zero, q is not zero;
R, is selected from the group consisting of H, lower alkyl, and halo; R2 is selected from the group consisting of H, and lower alkyl;
X, is selected from the group consisting of O, S, N and CH2; and X2, X3 and X4 are each independently selected from the group consisting H, hydroxy, lower alkyl, amino, halo, alkoxy, phosphate, thiophosphate, carboxylate, and nitro, or X2 and X3 together are cyclophosphate; and the pharmaceutically acceptable salts thereof, with the proviso that: when R, and R2 are H, and p, m, and n are each 1, and q is 1, 2 or 3, and X, is O, neither X2 nor X3 are H, neither X2 and X3 are -OH, and X2 and X3 together are not cyclophosphate.
23. A compound according to claim 22, wherein p is 0, q is 1, and X4 is Cl.
24. A compound according to claim 22, wherein said compound has antagonist activity at a P2Y receptor.
25. A compound according to claim 22, wherein said compound has competitive antagonist activity at a P2 Y receptor.
26. A compound according to claim 22, wherein said compound binds selectively to a P2Y receptor.
27. A method of detecting a P2Y receptor in a biological sample suspected of containing a P2Y receptor, comprising; contacting said biological sample with a compound according to Formula II:
wherein: m is 1, 2, or 3; n is 1, 2, or 3; p is 0 or 1 ; q is 0, 1 , 2, or 3, with the proviso that when p is zero, q is not zero;
R, is selected from the group consisting of H, lower alkyl, and halo; R2 is selected from the group consisting of H, and lower alkyl; X, is selected from the group consisting of O, S, N and CH2; and X2, X3 and X4 are each independently selected from the group consisting H, hydroxy, lower alkyl, amino, halo, alkoxy, phosphate, thiophosphate, carboxylate, and nitro, or X2 and X3 together are cyclophosphate, and the pharmaceutically acceptable salts thereof, wherein said compound of Formula II selectively binds a P2Y receptor; and then detecting the presence or absence of binding of said P2Y receptor antagonist to a receptor in said biological sample, the presence of binding indicating the presence of the P2Y receptor.
28. A method according to Claim 27, wherein said P2Y receptor is the P2Y2 receptor.
29. A method according to Claim 27, wherein said P2Y receptor is the P2Y4 receptor.
Applications Claiming Priority (3)
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US2985596P | 1996-10-30 | 1996-10-30 | |
US60029855 | 1996-10-30 | ||
PCT/US1997/019922 WO1998018430A2 (en) | 1996-10-30 | 1997-10-23 | P2y receptor antagonists |
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JP (1) | JP2001504097A (en) |
AU (1) | AU5584698A (en) |
CA (1) | CA2241687A1 (en) |
WO (1) | WO1998018430A2 (en) |
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DK1058686T3 (en) | 1998-02-25 | 2007-03-05 | Univ Emory | 2'-fluoro nucleosides |
SE9802574D0 (en) * | 1998-07-17 | 1998-07-17 | Astra Pharma Prod | Novel compounds |
EP1200102A1 (en) * | 1999-07-22 | 2002-05-02 | Supergen, Inc. | Methods for treating autoimmune diseases |
US7115585B2 (en) * | 2000-08-21 | 2006-10-03 | Inspire Pharmaceuticals, Inc. | Compositions for treating epithelial and retinal tissue diseases |
EP1368366A1 (en) * | 2001-02-07 | 2003-12-10 | Celltech R & D Limited | Non-natural nucleotides and dinucleotides |
KR20050043761A (en) * | 2001-11-06 | 2005-05-11 | 인스파이어 파마슈티컬스 인코퍼레이티드 | Method for treating or preventing inflammatory diseases |
EP1590359A2 (en) * | 2003-02-03 | 2005-11-02 | CV Therapeutics Inc. | PARTIAL AND FULL AGONISTS OF A sb 1 /sb ADENOSINE RECEPTORS |
US7388021B2 (en) | 2004-05-12 | 2008-06-17 | Bristol Myers Squibb Company | Urea antagonists of P2Y1 receptor useful in the treatment of thrombotic conditions |
US7550499B2 (en) | 2004-05-12 | 2009-06-23 | Bristol-Myers Squibb Company | Urea antagonists of P2Y1 receptor useful in the treatment of thrombotic conditions |
US7645778B2 (en) | 2005-01-19 | 2010-01-12 | Bristol-Myers Squibb Company | Heteroaryl compounds as P2Y1 receptor inhibitors |
ES2352796T3 (en) | 2005-06-27 | 2011-02-23 | Bristol-Myers Squibb Company | CYCLIC ANTAGONISTS UNITED TO C OF THE P2Y1 RECEIVER USEFUL IN THE TREATMENT OF THROMBOTHIC AFFECTIONS. |
WO2007002634A1 (en) | 2005-06-27 | 2007-01-04 | Bristol-Myers Squibb Company | Carbocycle and heterocycle antagonists of p2y1 receptor useful in the treatment of thrombotic conditions |
AU2006261828A1 (en) * | 2005-06-27 | 2007-01-04 | Bristol-Myers Squibb Company | N-linked heterocyclic antagonists of P2Y1 receptor useful in the treatment of thrombotic conditions |
DE602006020871D1 (en) | 2005-06-27 | 2011-05-05 | Bristol Myers Squibb Co | LINEAR UREA MIMETIC ANTAGONISTS OF THE P2Y1 RECEPTOR FOR THE TREATMENT OF THROMBOSELEIDES |
US7960569B2 (en) | 2006-10-17 | 2011-06-14 | Bristol-Myers Squibb Company | Indole antagonists of P2Y1 receptor useful in the treatment of thrombotic conditions |
AR064245A1 (en) | 2006-11-17 | 2009-03-25 | Epix Delaware Inc | ADENOSINE ANALOGS AND ITS USE |
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DE2122529A1 (en) * | 1971-05-06 | 1972-12-14 | Max Planck Gesellschaft zur Förde rung der Wissenschaften e V , 3400 Gottin gen | Thiophosphate analogs of the nucleoside di and tnphosphate and processes for their preparation |
JPS4911896A (en) * | 1972-05-15 | 1974-02-01 | ||
DE2331223C2 (en) * | 1972-06-19 | 1984-11-22 | Kohjin Co., Ltd., Tokio / Tokyo | S-substituted-2-thioadenosines, their 5'-monophosphates, processes for their preparation and pharmaceuticals containing them |
US4266048A (en) * | 1977-10-11 | 1981-05-05 | The United States Of America As Represented By The Department Of Health, Education And Welfare | Synthesis of analogs of 3'-phosphoadenosine 5'-phosphosulfate (PAPS) |
US4828979A (en) * | 1984-11-08 | 1989-05-09 | Life Technologies, Inc. | Nucleotide analogs for nucleic acid labeling and detection |
US4719295A (en) * | 1985-12-31 | 1988-01-12 | Warner-Lambert Company | Compound 2-iodo-2'-deoxyadenosine |
US4788181A (en) * | 1986-09-29 | 1988-11-29 | The United States Of America As Represented By The Department Of Health And Human Services | 5-substituted-2',3'-dideoxycytidine compounds with anti-HTLV-III activity |
WO1992017488A1 (en) * | 1991-04-06 | 1992-10-15 | Fisons Plc | Atp analogues |
DE69406649T2 (en) * | 1993-02-10 | 1998-03-05 | Astra Pharmaceuticals Ltd., Kings Langley, Hertfordshire | N-ALKYL-2 SUBSTITUTED ATP ANALOGS |
AU7395094A (en) * | 1993-10-15 | 1995-05-04 | Wisconsin Alumni Research Foundation | Substituted purine nucleoside analogs and method for treating endotoxin shock |
US5620676A (en) * | 1994-03-08 | 1997-04-15 | The United States Of America As Represented By The Department Of Health And Human Services | Biologically active ATP analogs |
US5712258A (en) * | 1995-03-23 | 1998-01-27 | The Trustees Of The University Of Pennsylvania | Inotropic ADP and ATP analogues and their pharmaceutical compositions |
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- 1997-10-23 EP EP97952172A patent/EP0929218A4/en not_active Withdrawn
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EP0929218A4 (en) | 2001-05-16 |
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EP0929218A2 (en) | 1999-07-21 |
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