88625-23-4

Upstream product

• 34604-60-9 5-hydroxypyrazinoic acid 
• 36070-80-1 5-chloropyrazinoic acid 
• 79-37-8 oxalyl dichloride 
• 57005-60-4 1,6-dihydro-6-oxo-2,3-pyrazinedicarbonitrile 
• 33332-25-1 methyl 5-chloropyrazine-2-carboxylate 
• 1245215-48-8 methyl 4-hydroxy-2-methyl-2H-indazole-6-carboxylate 
• 34604-60-9 4,5-dihydro-5-oxo-2-pyrazinecarboxylic acid 

Downstream Products

• 54013-04-6 ethyl 5-chloro-2-pyrazinecarboxylate 
• 169335-50-6 5-chloropyrazine-2-carboxylic acid tert-butyl ester 
• 21279-64-1 5-chloro-pyrazine-2-carboxylic acid amide 
• 945978-55-2 5-chloro-pyrazine-2 carboxylic acid (3,4-dimethoxy-phenyl)-amide 
• 915948-98-0 azetidin-1-yl(5-chloropyrazin-2-yl)methanone 
• 915949-00-7 5-chloro-N,N-dimethylpyrazine-2-carboxamide 
• 1352570-02-5 (S)-5-(3-(1-hydroxypropan-2-yloxy)-5-(6-oxo-1,6-dihydropyrimidin-2-yl)phenoxy)-N,N-dimethylpyrazine-2-carboxamide 
• 1352571-67-5 C₂₈H₂₉N₅O₆ 
• 1352570-06-9 N,N-dimethyl-5-(3-(1-methyl-2-oxopyrrolidin-3-yloxy)-5-(6-oxo-1,6-dihydropyrimidin-yl)phenoxy)pyrazine-2-carboxamide 
• 1352570-13-8 5-(3-isopropoxy-5-(6-oxo-1,6-dihydropyrimidin-2-yl)phenoxy)-N,N-dimethylpyrazine-2-carboxamide 
• 1352571-64-2 C₂₈H₂₉N₅O₅ 
• 1403334-19-9 (S)-5-Chloro-N-(1-(3-(3-chloro-4-cyanophenyl)-1H-pyrazol-1-yl)-propan-2-yl)pyrazine-2-carboxamide 
• 958799-53-6 N-benzyl-5-chloropyrazine-2-carboxamide 
• 1426690-30-3 5-chloro-N-(3-trifluoromethylbenzyl)pyrazine-2-carboxamide? 

Relevant academic research and scientific papers

5-Alkylamino-N-phenylpyrazine-2-carboxamides: Design, preparation, and antimycobacterial evaluation

According to the World Health Organization, tuberculosis is still in the top ten causes of death from a single infectious agent, killing more than 1.7 million people worldwide each year. The rising resistance developed by Mycobacterium tuberculosis against currently used antituberculars is an imperative to develop new compounds with potential antimycobacterial activity. As a part of our continuous research on structural derivatives of the first-line antitubercular pyrazinamide, we have designed, prepared, and assessed the in vitro whole cell growth inhibition activity of forty-two novel 5-alkylamino-N-phenylpyrazine-2-carboxamides with various length of the alkylamino chain (propylamino to octylamino) and various simple substituents on the benzene ring. Final compounds were tested against Mycobacterium tuberculosis H37Ra and four other mycobacterial strains (M. aurum, M. smegmatis, M. kansasii, M. avium) in a modified Microplate Alamar Blue Assay. We identified several candidate molecules with micromolar MIC against M. tuberculosis H37Ra and low in vitro cytotoxicity in HepG2 cell line, for example, N-(4-hydroxyphenyl)-5-(pentylamino)pyrazine-2-carboxamide (3c, MIC = 3.91 μg/mL or 13.02 μM, SI > 38) and 5-(heptylamino)-N-(p-tolyl)pyrazine-2-carboxamide (4e, MIC = 0.78 μg/mL or 2.39 μM, SI > 20). In a complementary screening, we evaluated the in vitro activity against bacterial and fungal strains of clinical importance. We observed no antibacterial activity and sporadic antifungal activity against the Candida genus.

Design, synthesis, and cytostatic activity of novel pyrazine sorafenib analogs

The current study is focused on a series of sorafenib analogs as potential antitumor agents. We have designed and synthesized nine novel pyrazine analogs 6a–i differing in amide and/or urea regions. Two alternative strategies for the preparation of title

Discovery of a Partial Glucokinase Activator Clinical Candidate: Diethyl ((3-(3-((5-(Azetidine-1-carbonyl)pyrazin-2-yl)oxy)-5-isopropoxybenzamido)-1H-pyrazol-1-yl)methyl)phosphonate (BMS-820132)

Glucokinase (GK) is a key regulator of glucose homeostasis, and its small-molecule activators represent a promising opportunity for the treatment of type 2 diabetes. Several GK activators have been advanced into clinical trials and have demonstrated promising efficacy; however, hypoglycemia represents a key risk for this mechanism. In an effort to mitigate this hypoglycemia risk while maintaining the efficacy of the GK mechanism, we have investigated a series of amino heteroaryl phosphonate benzamides as ‘‘partial” GK activators. The structure-activity relationship studies starting from a “full GK activator” 11, which culminated in the discovery of the “partial GK activator” 31 (BMS-820132), are discussed. The synthesis and in vitro and in vivo preclinical pharmacology profiles of 31 and its pharmacokinetics (PK) are described. Based on its promising in vivo efficacy and preclinical ADME and safety profiles, 31 was advanced into human clinical trials.

Discovery of a Novel Potent and Selective Calcium Release-Activated Calcium Channel Inhibitor: 2,6-Difluoro- N-(2′-methyl-3′-(4-methyl-5-oxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)-[1,1′-biphenyl]-4-yl)benzamide. Structure-Activity Relationship and Preclinical Characterization

The role of calcium release-activated calcium (CRAC) channels is well characterized and is of particular importance in T-cell function. CRAC channels are involved in the pathogenesis of several autoimmune diseases, making it an attractive therapeutic target for treating inflammatory diseases, like rheumatoid arthritis (RA). A systematic structure-activity relationship study with the goal of optimizing lipophilicity successfully yielded two lead compounds, 36 and 37. Both compounds showed decent potency and selectivity and a remarkable pharmacokinetic profile. Further characterization in in vivo RA models and subsequent histopathological evaluation of tissues led to the identification of 36 as a clinical candidate. Compound 36 displayed an excellent safety profile and had a sufficient safety margin to qualify it for use in human testing. Oral administration of 36 in Phase 1 clinical study in healthy volunteers established favorable safety, tolerability, and good target engagement as measured by levels of IL-2 and TNF-α.

Lappaconitine derivative with analgesic activity, and preparation method and application thereof

The invention provides a lappaconitine derivative with analgesic activity, and a preparation method and application thereof. The structure of the lappaconitine derivative is as shown in formula I in the specification. The lappaconitine derivative provided by the invention is high in analgesic activity, good in water solubility and low in biotoxicity, can be used for preparing low-toxicity analgesic drugs, and is wide in application prospect.

Discovery of 5-{4-[(7-Ethyl-6-oxo-5,6-dihydro-1,5-naphthyridin-3-yl)methyl]piperazin-1-yl}- N-methylpyridine-2-carboxamide (AZD5305): A PARP1-DNA Trapper with High Selectivity for PARP1 over PARP2 and Other PARPs

Poly-ADP-ribose-polymerase (PARP) inhibitors have achieved regulatory approval in oncology for homologous recombination repair deficient tumors including BRCA mutation. However, some have failed in combination with first-line chemotherapies, usually due to overlapping hematological toxicities. Currently approved PARP inhibitors lack selectivity for PARP1 over PARP2 and some other 16 PARP family members, and we hypothesized that this could contribute to toxicity. Recent literature has demonstrated that PARP1 inhibition and PARP1-DNA trapping are key for driving efficacy in a BRCA mutant background. Herein, we describe the structure- and property-based design of 25 (AZD5305), a potent and selective PARP1 inhibitor and PARP1-DNA trapper with excellent in vivo efficacy in a BRCA mutant HBCx-17 PDX model. Compound 25 is highly selective for PARP1 over other PARP family members, with good secondary pharmacology and physicochemical properties and excellent pharmacokinetics in preclinical species, with reduced effects on human bone marrow progenitor cells in vitro.

HTT MODULATORS FOR TREATING HUNTINGTON'S DISEASE

Provided herein are certain compounds useful as HTT modulators. Such compound are useful in the treatment of Huntington's disease.

FLAVONE COMPOUNDS FOR THE TREATMENT AND PROPHYLAXIS OF HEPATITIS B VIRUS DISEASE

The present invention provides flavone derivatives having the general formula (I) which are useful for the treatment of Hepatitis B Virus infection (HBV). The compounds act as cccDNA (covalently closed circular DMA) inhibitors.

ISOXAZOLE O-LINKED CARBAMOYL CYCLOHEXYL ACIDS AS LPA ANTAGONISTS

The present invention provides compounds of Formula (Ia) or (Ib) or a stereoisomer, tautomer, or pharmaceutically acceptable salt or solvate thereof, wherein wherein X1, X2, X3, and X4 are each independently CR6 or N; provided that no more than two of X1, X2, X3, or X4 are N; L is C1-4 alkylene substituted with 0 to 4 R7; R1 is (-CH2)aR9; a is an integer of 0 or 1; R2 is each independently halo, cyano, hydroxyl, amino, C1-6 alkyl, C3-6 cycloalkyl, C4-6 heterocyclyl, alkylamino, haloalkyi, hydroxyalkyi, aminoalkyi, alkoxy, alkoxyalkyi, haloalkoxyallcyl, or haloalkoxy; n is an integer of 0, 1, or 2; R3 is hydrogen, C1-6 alkyl, C1-6 deuterated alkyl, haloalkyi, hydroxyalkyi, aminoalkyi, alkoxyalkyi, haloalkoxyalkyl, alkoxy, or haloalkoxy, and the alkyl, by itself or as part of other moiety, is optionally substituted with deuterium partially or fully; R4 is C1-10 alkyl, C1-10 deuterated alkyl, C1-10 haloalkyi, C1-10 alkenyl, C3-8 cycloalkyl, 6 to 10-membered aryl, 3 to 8-membered heterocyclyl, -(C1-6 alkylene)-(C3-8 cycloalkyl), -(C1-6 alkylene)-(6 to 10-membered aryl), -(C1-6 alkylene)-(3 to 8-membered heterocyclyl), or -(C1-6 alkylene)-(5 to 6-membered heteroaryl); wherein each of the alkyl, alkylene, alkenyl, cycloalkyl, aryl, heterocyclyl, and heteroaryl, by itself or as part of other moiety, is independently substituted with 0 to 3 R8; or alternatively, R3 and R4, taken together with the N atom to which they are attached, form a 4 to 9-membered heterocyclic ring moiety which is substituted with 0 to 3 R; R5 and R6 are each independently hydrogen, halo, cyano, hydroxyl, amino, C1-6 alkyl, alkylamino, haloalkyl, hydroxyalkyl, aminoalkyl, alkoxyalkyl, haloalkoxyalkyl, alkoxy, or haloalkoxy; R7 is halo, oxo, cyano, hydroxyl, amino, C1-6 alkyl, C3-6 cycloalkyl, C4-6 heterocyclyl, alkylamino, haloalkyl, hydroxyalkyl, aminoalkyl, alkoxyalkyl, haloalkoxyalkyl, alkoxy, or haloalkoxy; R8 are each independently deuterium, halo, hydroxyl, amino, cyano, C1-6 alkyl, C1-6 deuterated alkyl, C2-6 alkenyl, C2-6 alkynyl, alkylamino, haloalkyl, hydroxyalkyl, aminoalkyl, alkoxyalkyl, haloalkoxyalkyl, alkoxy, haloalkoxy, phenyl, or 5 to 6-membered heteroaryl; or alternatively, two R8, taken together with the atoms to which they are attached, form a 3 to 6-membered carbocyclic ring or a 3 to 6-membered heterocyclic ring each of which is independently substituted with 0 to 3 R12; R9 is selected from -CN, -C(O)OR10, -C(O)NR11aR11b, -CO-NH-CO-Re, -CO-NH-SO2-Re, -CO-NH-SO-Re, -SO2-OH, -SO2-NH-CO-Re, -P(O)(OH)2, tetrazol-5-yl, -CH2-CO-NH-CO-Re, -CH2-CO-NH-SO2-Re, CH2-CO-NH-SO-Re, -CH2-SO2-OH, -CH2-SO2-NH-CO-Re, -CH2-P(O)(OH)2, tetrazol-5-ylmethylene; Re is C1-6 alkyl, C3 -6 cycloalkyl, haloalkyl, hydroxyalkyl, aminoalkyl, alkoxyalkyl, or haloalkoxyalkyl; R10 is hydrogen or C1-10 alkyl; and R11a and R11b are each independently hydrogen, C1-6 alkyl, C3-6 cycloalkyl, C4-6 heterocyclyl, alkylamino, haloalkyl, hydroxyalkyl, aminoalkyl, alkoxyalkyl, haloalkoxyalkyl, alkoxy, or haloalkoxy; and R12 is halo, cyano, hydroxyl, amino, C1-6alkyl, alkylamino, haloalkyl, hydroxyalkyl, aminoalkyl, alkoxyalkyl, haloalkoxyalkyl, alkoxy, haloalkoxy, phenyl, or 5 to 6-membered heteroaryl. These compounds are selective LPA receptor inhibitors.

ISOXAZOLE N-LINKED CARBAMOYL CYCLOHEXYL ACIDS AS LPA ANTAGONISTS

The present invention provides compounds of Formula (Ia) and (Ib): (Ia) or (Ib), or a stereoisomer, tautomer, or pharmaceutically acceptable salt or solvate thereof, wherein all the variables are as defined herein. These compounds are selective LPA receptor inhibitors.