摘要:
Disclosed are adenosine derivatives, methods for the synthesis thereof, and pharmaceutical compositions for the prevention and treatment of inflammatory diseases, comprising the same as an active ingredient. The adenosine derivatives have high binding affinity and selectivity for adenosine receptors, especially for A3 adenosine receptors and act as A3 adenosine receptor antagonists, and exhibit anti-inflammatory activity. Thus, the adenosine derivatives are useful in the prevention and treatment of inflammatory diseases.
摘要:
Disclosed are (N)-methanocarba adenine nucleosides, e.g., of formula (I) as highly potent A3 adenosine receptor agonists, pharmaceutical compositions comprising such nucleosides, and a method of use of these nucleosides, wherein R1-R6 are as defined in the specification. These nucleosides exhibit similar selectivities as agonists of the A3 versus the A1 receptor for both human and mouse adenosine receptors, and are contemplated for use in the treatment a number of diseases, for example, inflammation, cardiac ischemia, stroke, asthma, diabetes, and cardiac arrhythmias.
摘要:
Phosphonate and phosphinate N-methanocarba derivatives of AMP including their prodrug analogs are described. MRS2339, a 2-chloro-AMP derivative containing a (N)-methanocarba (bicyclo[3.1.0]hexane) ring system in place of ribose, activates P2X receptors, ligand-gated ion channels. Phosphonate analogues of MRS2339 were synthesized using Michaelis-Arbuzov and Wittig reactions, based on the expectation of increased half-life in vivo due to the stability of the C—P bond. When administered to calsequestrin-overexpressing mice (a genetic model of heart failure) via a mini-osmotic pump (Alzet), some analogues significantly increased intact heart contractile function in vivo, as assessed by echocardiography-derived fractional shortening (FS) as compared to vehicle-infused mice. The range of carbocyclic nucleotide analogues for treatment of heart failure has been expanded.
摘要:
The present invention provides novel nucleoside and nucleotide derivatives that are useful agonist or antagonists of P1 and P2 receptors. For example, the present invention provides a compound of formula A-M, wherein A is modified adenine or uracil and M is a constrained cycloalkyl group. The adenine or uracil is bonded to the constrained cycloalkyl group. The compounds of the present invention are useful in the treatment or prevention of various diseases including airway diseases (through A2B, A3, P2Y2 receptors), cancer (through A3, P2 receptors), cardiac arrhythmias (through A1 receptors), cardiac ischemia (through A1, A3 receptors), epilepsy (through A1, P2X receptors), and Huntington's Disease (through A2A receptors).
摘要:
Provided are methods for reducing intraocular pressure in an individual having an ocular disorder causing elevated intraocular pressure, such as glaucoma. The method comprises administering to the individual an effective intraocular pressure-reducing amount of a pharmaceutical composition comprising an A3 subtype adenosine receptor (A3AR) antagonist, including dihydropyridine, pyridine, pyridinium salt or triazoloquinazoline, and derivatives thereof expressly having A3AR antagonist activity, including, e.g., the nucleoside-based A3AR antagonist, MRS-3820. Further provided is a method for ensuring the delivery of a topically administered therapeutic composition for reducing intraocular pressure, wherein the method expressly requires physically opening a channel through the corneal barrier of the patient's eye by a microneedle or micropipette to permit transport of the topical composition to the anterior chamber of the eye.
摘要:
The present invention provides novel nucleoside and nucleotide derivatives that are useful agonists or antagonists of P1 or P2 receptors. For example, the present invention provides a compound of formula A-M, wherein A is modified adenine or uracil and M is a constrained cycloalkyl group. The adenine or uracil is bonded to the constrained cycloakyl group. The compounds of the present invention are useful in the treatment or prevention of various diseases including airway diseases (through A2B, A3, P2Y2 receptors), cancer (through A3, P2 receptors), cardiac arrhythmias (through A1 receptors), cardiac ischemia (through A1, A3 receptors), epilepsy (through A1, P2X receptors), and Huntington's Disease (through A2A receptors).
摘要:
The present invention provides certain novel adenosine triphosphate (ATP) analogs, pharmaceutical compositions, and methods of using such analogs in the treatment of septic shock and other disease conditions. Examples of the ATP analogs include the mono-, di- and triphosphates of adenosines with various selected substituents at the 2, 6, 8, and 9-positions, such as alkyl, alkylphenyl, phenylalkyl, S-alkyl, S-alkenyl, S-alkylcyano, S-phenyl, S-alkylphenyl, S-alkylamino, S-alkylthioalkyl, S-alkylthiocyanato, S-alkylaminophenyl, S-alkylnitrophenyl, hydroxy, bromo, fluoro, chloro, and aminoalkylamino. The present invention also provides pharmaceutical compositions of and methods of using certain xanthine and uracil derivatives for the above disease conditions. Examples of the xanthine derivatives include xanthines having alkyl or alkyltriphosphate substituents at the 1, 3, and 7-positions. Examples of the uracil derivatives include 5-fluoro- and 5-bromo uracil triphosphates. Also provided are assays for assessing the binding of the ATP analogs.
摘要:
Disclosed are compounds for treating or preventing a disease or disorder responsive to antagonism of a P2Y14R receptor agonist in a mammal in need thereof, for example, compounds of formulas (I) and (II), wherein R1-R8, X, Y, Z, X′, Y′, Z′, and A are as defined herein, that are useful in treating an inflammatory such as asthma, cystic fibrosis, and sterile inflammation of the kidney.
摘要:
Phosphonate and phosphinate N-methanocarba derivatives of AMP including their prodrug analogs are described. MRS2339, a 2-chloro-AMP derivative containing a (N)-methanocarba (bicyclo[3.1.0]hexane) ring system in place of ribose, activates P2X receptors, ligand-gated ion channels. Phosphonate analogs of MRS2339 were synthesized using Michaelis-Arbuzov and Wittig reactions, based on the expectation of increased half-life in vivo due to the stability of the C—P bond. When administered to calsequestrin-overexpressing mice (a genetic model of heart failure) via a mini-osmotic pump (Alzet), some analogs significantly increased intact heart contractile function in vivo, as assessed by echocardiography-derived fractional shortening (FS) as compared to vehicle-infused mice. The range of carbocyclic nucleotide analogs for treatment of heart failure has been expanded.
摘要:
Disclosed are conjugates comprising a dendrimer and a ligand, which is a functionalized congener of an agonist or antagonist of a receptor of the G-protein coupled receptor (GPCR) superfamily, for example, wherein the functionalized congener is an A1 adenosine receptor agonist having a purine nucleoside moiety and a functional group at the N6 position of the purine nucleoside moiety, wherein the functional group has the formula (I):N6H—Ar1—CH2—C(═O)NH—R1 (I), wherein Ar1 and R1 as defined herein. Also disclosed are pharmaceutical compositions, methods of treating various diseases, and a diagnostic method employing such conjugates.