33331-57-6

Upstream product

• 1824-81-3 2-Amino-6-methylpyridine 
• 7440-44-0 pyrographite 
• 13250-96-9 ethyl 4-hydroxy-7-methyl-1,8-naphthyridine-3-carboxylate 
• 87-13-8 diethyl 2-ethoxymethylenemalonate 
• 13250-95-8 diethyl 2-{[(6-methyl-2-pyridyl)amino]methylene}propane-1,3-dioate 

Downstream Products

• 1028260-73-2 4-Chloro-7-methyl-[1,8]naphthyridine-3-carboxylic acid dimethylamide 

Relevant academic research and scientific papers

ANTI-VIRAL COMPOUNDS

Compounds effective in inhibiting replication of Hepatitis C virus ( HCV ) or other viruses are disclosed. This invention is also directed to compositions comprising such compounds, coformulation or co-administration of such compounds with other anti-viral or therapeutic agents, processes and intermediates for the syntheses of such compounds, and methods of using such compounds for the treatment of HCV or other viral infections.

Preparation and use of ortho-sulfonamido bicyclic heteroaryl hydroxamic acids as matrix metalloproteinase and TACE inhibitors

This invention provides, low molecular weight, non-peptide inhibitors of matrix metalloproteinases and TNF-α converting enzyme (TACE, tumor necrosis factor-α converting enzyme) of formula: B wherein B is T, U, W, and X are each, independently, carbon or nitrogen, provided that when T or U is carbon, either may be optionally substituted with R1; Y is carbon, nitrogen, oxygen or sulfur, provided that at least one of T, U, W, X, and Y is not carbon, and further provided that no more than 2 of T, U, W, and X are nitrogen; is a phenyl ring or is a heteroaryl ring of ring 5-6 atoms which may contain 0-2 heteratoms selected from nitrogen, oxygen, and sulfur, in addition to any heteroatoms defined by W or X; wherein the phenyl or heteroaryl ring may be optionally mono-, di-, or tri- substituted with R1; Z is a phenyl, naphthyl, heteroaryl, or heteroaryl fused to phenyl, wherein the heteroaryl moiety contains of 5-6 ring atoms and 1-3 heteroatoms selected from nitrogen, oxygen, or sulfur; wherein the phenyl, naphthyl, heteroaryl, or phenyl fused heteroaryl moieties may be optionally mono-, di-, or tri- substituted with R1; R1 is hydrogen, halogen, alkyl of 1-8 carbon atoms, alkenyl of 2-6 carbon atoms, alkynyl of 2-6 carbon atoms, cyclocalkyl of 3-6 carbon atoms, —(CH2)nZ, —OR2, —CN, —COR2, perfluoroalkyl of 1-4 carbon atoms, —CONR2R3, —S(O)xR2 —OPO(OR2)OR3, —PO(OR2)R3, —OC(O)NR2R3, —COOR2, —CONR2R3, —SO3H, —NR2R3, —NR2COR3, —NR2COOR3, —SO2NR2R3, —NO2, —N(R2)SO2R3, —NR2CONR2R3, —NR2C(═NR 3)NR2R3, —SO2NHCOR4, —CONHSO2R4, -tetrazol-5-yl, —SO2NHCN, —SO2NHCONR2R3 or Z; V is a saturated or partially unsaturated heterocycloalkyl ring of 5-7 ring atoms having 1-3 heteroatoms selected from N, O, or S, which may be optionally mono-, or di-substituted with R2; R2 and R3 are each, independently, hydrogen, alkyl of 1-8 carbon atoms, alkenyl of 2-6 carbon atoms, alkynyl of 2-6 carbon atoms, cycloalkyl of 3-6 carbon atoms; perfluoroalkyl of 1-4 carbon atoms, Z or V; R4 is alkyl of 1-8 carbon atoms, alkenyl of 2-6 carbon atoms, alkynyl of 2-6 carbon atoms, cycloalkyl of 3-6 carbon atoms; perfluoroalkyl of 1-4 carbon atoms, Z or V; R5 is hydrogen, alkyl of 1-8 carbon atoms, alkenyl of 2-6 carbon atoms, alkynyl of 2-6 carbon atoms, Z, or V; n=1-6; x=0-2 or a pharmaceutically acceptable salt thereof.

Ortho-sulfonamido bicyclic hydroxamic acids as matrix metalloproteinase and TACE inhibitors

This invention provides, low molecular weight, non-peptide inhibitors of matrix metalloproteinases and TNF-α converting enzyme (TACE, tumor necrosis factor-α converting enzyme) of formula: B wherein B is P and Q are provided that when P is Q is and vice versa; or a pharmaceutically acceptable salt thereof.

Condensed 4-aminopyridines with antirheumatic activity

Compounds of formula I STR1 and pharmaceutically acceptable salts thereof in which one of A or B represents N and the other represents N or C--R3 ; R1 represents hydrogen, halo, alkyl, hydroxy, carboxyalkenyl, alkoxycarbonylalkenyl, hydroxyalkyl, carboxyalkyl, alkoxycarbonylalkyl, alkoxy, halogenated alkyl, carboxy, alkoxycarbonyl, alkanoylamino or carbamoylalkenyl; R2 represents hydrogen, alkyl, halo, alkoxy, hydroxy, alkanoyloxy, or phenoxy; R3 represents hydrogen or alkyl; R4 represents hydrogen, halo, alkoxycarbonyl, cyano, benzyloxycarbonyl, alkanoyl, benzoyl, alkyl, carboxy, alkylthio or carbamoyl; R5 represents hydrogen or alkyl; R9 represents hydrogen or alkyl; R10 represents phenyl, pyridyl or pyrimidinyl substituted by OR6 and optionally further substituted wherein R6 represents hydrogen, alkyl, alkoxycarbonyl or carbamoyl, alicyclic hydrocarbon, phenyl, cycloalkylalkyl, arylalkyl or pyridyl; or when R10 represents phenyl, OR6 represents a monosaccharide group or a disaccharide group; which are antirheumatic agents. Compositions containing these compounds and processes to prepare them are also disclosed.

N-Arylpiperazinyl-N'-propylamino derivatives of heteroaryl amides as functional uroselective α1-adrenoceptor antagonists

Novel arylpiperazines were identified as α1-adrenoceptor (AR) subtype- selective antagonists by functional in vitro screening. 3-[4-(ortho- Substituted phenyl)piperazin-1:yl]propylamines were derivatized with N,N- dimethyl anthranilamides, nicotinamides, as well as carboxamides of quinoline, 1,8-naphthyridine, pyrazolo[3,4-b]pyridine, isoxazolo[3,4- b]pyridine, imidazo[4,5-b]pyridine, and pyrazolo[1,5-a]pyrimidines. Strips of rabbit bladder neck were employed as a predictive assay for antagonism in the human lower tract. Rings of rat aorta were used as a 'negative screen' for the test antagonists. Binding to α1-ARs was relatively sensitive to size and electronic features of the arylpiperazine portion of the antagonists and permissive to these features on the heteroaryl carboxamide side. These structure-affinity findings were exploited to produce nicotinamides (e.g. 13ii and 25x) and pyrazolo[3,4-b]pyridines (e.g. 37f and 37y) ligands with nanomolar affinity at the α1-AR subtype prevalent in the human lower urinary tract (pA2 values: 8.8, 10.7, 9.3, and 9.9, respectively) and displaying 2-3 orders of magnitude selectivity over the α(1D)-AR.

Penicillins

New penicillin antibiotics are disclosed which are effective antibacterial agents and which belong to the class of α-(heterocyclic acylamino) penicillins and their salts and esters together with pharmaceutical compositions containing the same and their method of administration. The new compounds are characterized by having an amino substituent on the heterocyclic ring which is linked through an acylamino group to the α-carbon atom of the penicillin side chain. Procedure for preparing the new penicillins is described as well as the antibacterial activity of exemplary compounds against typical microorganisms.

Preparation of 1-(lower alkyl)-1,4-dihydro-7-methyl-4-oxo-1,8-naphthyridine-3-carboxylic acids

A process for producing a compound of the formula: SPC1 Wherein Z is CH or N; R is a lower alkyl group, a lower alkenyl group, a cycloalkyl group or a hydroxyalkyl group; R1 is a hydrogen atom or lower alkyl group; when Z is N, R2, R3 and R4 are a hydrogen atom, a halogen atom a lower alkyl group, a lower alkoxyl group, a lower hydroxyalkyl group, a lower acyloxyalkyl group, trihalogenoalkyl group, a carboxyl group, a cyano group, or an aralkyl group; when Z is CH, R2, R3 and R4 are a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxyl group, a trihalogenoalkyl group, a cyano group, a nitro group, an alkylmercapto group, a lower alkylenedioxy group, or a lower alkylene bridge attached to the quinoline nucleus, which comprises heating a compound of the formula SPC2 Wherein R, R1, R2, R3, R4 and Z are as defined above, followed, if desired, by hydrolyzing the product obtained, is disclosed. The product is useful as an antibacterial agent. An intermediate having the formula: SPC3 Wherein A is OR or a halogen atom, and R, R1, R2, R3, R4 and Z are as defined above, and a process for its preparation are also disclosed.