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Chemical Structure| 98-97-5 Chemical Structure| 98-97-5
Chemical Structure| 98-97-5

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Pyrazinoic Acid inhibits Mycobacterial Coenzyme A biosynthesis by binding to aspartate decarboxylase PanD.

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Yuan, Gengyang ; Dhaynaut, Maeva ; Lan, Yu ; Guehl, Nicolas J. ; Huynh, Dalena ; Iyengar, Suhasini M. , et al.

Abstract: Metabotropic glutamate receptor 2 (mGluR2) is a therapeutic target for several neuropsychiatric disorders. An mGluR2 function in etiology could be unveiled by positron emission tomography (PET). In this regard, 5-(2-fluoro-4-[11C]methoxyphenyl)-2,2-dimethyl-3,4-dihydro-2H-pyrano[2,3-b]pyridine-7-carboxamide ([11C]13, [11C]mG2N001), a potent negative allosteric modulator (NAM), was developed to support this endeavor. [11C]13 was synthesized via the O-[11C]methylation of phenol 24 with a high molar activity of 212 ± 76 GBq/μmol (n = 5) and excellent radiochemical purity (>99%). PET imaging of [11C]13 in rats demonstrated its superior brain heterogeneity and reduced accumulation with pretreatment of mGluR2 NAMs, VU6001966 (9) and MNI-137 (26), the extent of which revealed a time-dependent drug effect of the blocking agents. In a nonhuman primate, [11C]13 selectively accumulated in mGluR2-rich regions and resulted in high-contrast brain images. Therefore, [11C]13 is a potential candidate for translational PET imaging of the mGluR2 function.

Hegde, Pooja V. ; Aragaw, Wassihun W. ; Cole, Malcolm S. ; Jachak, Gorakhnath ; Ragunathan, Priya ; Sharma, Sachin , et al.

Abstract: Tuberculosis (TB) remains a leading cause of infectious disease-related mortality and morbidity. Pyrazinamide (PZA) is a critical component of the first-line TB treatment regimen because of its sterilizing activity against non-replicating Mycobacterium tuberculosis (Mtb), but its mechanism of action has remained enigmatic. PZA is a prodrug converted by pyrazinamidase encoded by pncA within Mtb to the active moiety, pyrazinoic acid (POA) and PZA resistance is caused by loss-of-function mutations to pyrazinamidase. We have recently shown that POA induces targeted protein degradation of the enzyme PanD, a crucial component of the CoA biosynthetic pathway essential in Mtb. Based on the newly identified mechanism of action of POA, along with the crystal structure of PanD bound to POA, we designed several POA analogs using structure for interpretation to improve potency and overcome PZA resistance. We prepared and tested ring and carboxylic acid bioisosteres as well as 3, 5, 6 substitutions on the ring to study the structure activity relationships of the POA scaffold. All the analogs were evaluated for their whole cell antimycobacterial activity, and a few representative mols. were evaluated for their binding affinity, towards PanD, through isothermal titration calorimetry. We report that analogs with ring and carboxylic acid bioisosteres did not significantly enhance the antimicrobial activity, whereas the alkylamino-group substitutions at the 3 and 5 position of POA were found to be up to 5 to 10-fold more potent than POA. Further development and mechanistic anal. of these analogs may lead to a next generation POA analog for treating TB.

Keywords: Tuberculosis ; Pyrazinoic acid ; pyrazinamide

Alternative Products

Product Details of 2-Pyrazinecarboxylic acid

CAS No. :98-97-5
Formula : C5H4N2O2
M.W : 124.10
SMILES Code : C1=NC=CN=C1C(O)=O
MDL No. :MFCD00006130
InChI Key :NIPZZXUFJPQHNH-UHFFFAOYSA-N
Pubchem ID :1047

Safety of 2-Pyrazinecarboxylic acid

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338

Application In Synthesis of 2-Pyrazinecarboxylic acid

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

  • Downstream synthetic route of [ 98-97-5 ]

[ 98-97-5 ] Synthesis Path-Downstream   1~9

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  • [ 75-07-0 ]
  • [ 118543-96-7 ]
  • 5
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  • [ 21169-71-1 ]
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  • [ 5744-59-2 ]
  • [ 5521-55-1 ]
  • [ 636-44-2 ]
  • [ 13602-12-5 ]
  • C25H33N2O3Pol [ No CAS ]
  • C25H33N2O3Pol [ No CAS ]
  • [ 88-13-1 ]
  • [ 149-87-1 ]
  • furan-3-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-yl-methyl]-amide [ No CAS ]
  • furan-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • furan-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-amide [ No CAS ]
  • furan-3-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-amide [ No CAS ]
  • N-[4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-nicotin amide [ No CAS ]
  • pyrazine-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-amide [ No CAS ]
  • isoxazole-5-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • 1-methyl-1H-pyrrole-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • isoxazole-5-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-amide [ No CAS ]
  • thiophene-3-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-amide [ No CAS ]
  • N-[4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-nicotinamide [ No CAS ]
  • pyrazine-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • thiophene-3-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • 1-methyl-1H-pyrrole-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-amide [ No CAS ]
  • 5-methyl-isoxazole-3-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • 5-methyl-isoxazole-3-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-amide [ No CAS ]
  • 1,5-dimethyl-1H-pyrazole-3-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • 5-oxo-pyrrolidine-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • [1,2,3]-thiadazole-4-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • N-[4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-1-hydroxyisonicotin amide N-oxide [ No CAS ]
  • tetrahydro-furan-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • tetrahydro-furan-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-amide [ No CAS ]
  • 5-methyl-pyrazine-2-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • 2,5-dimethyl-furan-3-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-3-ylmethyl]-amide [ No CAS ]
  • 2,5-dimethyl-furan-3-carboxylic acid [4'-(1,1-dimethyl-6-morpholin-4-yl-6-oxo-hexyl)-2'-hydroxy-biphenyl-2-ylmethyl]-amide [ No CAS ]
YieldReaction ConditionsOperation in experiment
Compounds 41-70 were part of a parallel set prepared in library plate format according to General Procedure L, outlined below. ; L. General Procedure for Plate Preparation-Amide Formation XXI: Resin bound deprotected biarylphenol XVII (prepared from intermediate XII, boronates XIVd and XIVe, following general procedures D-F) was distributed into a 96 well plate, 10 mg of resin (0.013 mmol) per well. To the resin 400 mul of dichloromethane was added, followed by 100 mul of DIEA, followed by 0.13 mmol (10 equiv) of heterocyclic carboxylic acid XXa-XXn was added followed by 61 mg (0.13 mmol, 10 equiv) of PyBrop. The plate was shaken at room temperature for 24 hours, then drained and washed with dichloromethane, methanol/dichloromethane, dimethylformamide, methanol/dichloromethane and dichloromethane. The compounds were cleaved with TFA/dichloromethane (600 mul, 1:1) into a 96 deep well plate and submitted for testing without further purification. (Mass spec results obtained are shown in Table 4). Carboxylic Acids Het-COOH XX:
  • 6
  • [ 168268-00-6 ]
  • [ 98-97-5 ]
  • [ 859537-68-1 ]
YieldReaction ConditionsOperation in experiment
With pyridine; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; at 20℃; 2.59 g of pyrazine-2-carboxylic acid and 4.73 g of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide monohydrochloride were added to a pyridine (60 ml) solution of 4.13 g of <strong>[168268-00-6]4-benzyloxy-3-fluoroaniline</strong>, and the reaction liquid was stirred overnight at room temperature. Pyridine was evaporated away under reduced pressure, and then water was added to it. The resulting deposit was taken out through filtration to obtain the entitled compound as a brown solid.
  • 7
  • [ 109-08-0 ]
  • [ 25594-37-0 ]
  • [ 31396-35-7 ]
  • [ 98-97-5 ]
  • [ 5780-66-5 ]
  • [ 874-54-4 ]
  • [ 32046-09-6 ]
  • 8
  • [ 98-97-5 ]
  • [ 22838-46-6 ]
  • [ 1090696-17-5 ]
 

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