Synthesis and evaluation of new chalcones, derived pyrazoline and cyclohexenone derivatives as potent antimicrobial, antitubercular and antileishmanial agents
摘要:
A series of chalcones (1-8) were prepared by Claisen-Schmidt condensation of 3-nitroacetophenone with various aldehydes. These chalcones on cyclization with hydrazine hydrate in the presence of glacial acetic acid, hydrazine hydrate in absolute ethanol and ethyl acetoacetate in the presence of barium hydroxide gave corresponding N-acetyl pyrazolines (9-16), N-unsubstituted pyrazolines (17-19) and cyclohexenone derivatives (20-22). All the synthesized compounds were evaluated for their in vitro antibacterial and antifungal activity by using broth microdilution method, and many compounds showed promising activity against various tested bacteria and fungi. Among various tested compounds, 16 and 19 exhibited strongest activities against Streptococcus pyogenes and Pseudomonas aeruginosa; both have MIC value of 25 mu g/mL, which is fourfold greater than the standard drug. Many compounds showed good activity against Candida albican. Analogs 11, 12, 15-17 and 19 displayed two- to fivefold greater activity against C. albican as compared to the standard drug. Results of antitubercular evaluation revealed that compounds 4 and 19 displayed strong antimycobacterial activity against H(37)Rv having MIC of 25 and 62.5 mu g/mL, respectively. All analogs were found to be inactive against Leishmania braziliensis except analogs 4 and 5 which exhibited strong leishmanicidal activity against Leishmania promastigotes with IC50 values of 9.3 and 8.9 mu g/mL, respectively.
Synthesis and evaluation of new chalcones, derived pyrazoline and cyclohexenone derivatives as potent antimicrobial, antitubercular and antileishmanial agents
摘要:
A series of chalcones (1-8) were prepared by Claisen-Schmidt condensation of 3-nitroacetophenone with various aldehydes. These chalcones on cyclization with hydrazine hydrate in the presence of glacial acetic acid, hydrazine hydrate in absolute ethanol and ethyl acetoacetate in the presence of barium hydroxide gave corresponding N-acetyl pyrazolines (9-16), N-unsubstituted pyrazolines (17-19) and cyclohexenone derivatives (20-22). All the synthesized compounds were evaluated for their in vitro antibacterial and antifungal activity by using broth microdilution method, and many compounds showed promising activity against various tested bacteria and fungi. Among various tested compounds, 16 and 19 exhibited strongest activities against Streptococcus pyogenes and Pseudomonas aeruginosa; both have MIC value of 25 mu g/mL, which is fourfold greater than the standard drug. Many compounds showed good activity against Candida albican. Analogs 11, 12, 15-17 and 19 displayed two- to fivefold greater activity against C. albican as compared to the standard drug. Results of antitubercular evaluation revealed that compounds 4 and 19 displayed strong antimycobacterial activity against H(37)Rv having MIC of 25 and 62.5 mu g/mL, respectively. All analogs were found to be inactive against Leishmania braziliensis except analogs 4 and 5 which exhibited strong leishmanicidal activity against Leishmania promastigotes with IC50 values of 9.3 and 8.9 mu g/mL, respectively.
Modulation of peroxisome proliferator-activated receptors
申请人:Abgenomics Corporation
公开号:EP1803809A2
公开(公告)日:2007-07-04
A method of treating a peroxisome proliferators-activated receptors related disease by administering to a subject in need thereof an effective amount of a modulator of 15-keto prostaglandin-Δ13-reductase. Also disclosed are methods of identifying a compound for inhibiting activity of the reductase and of lowering blood glucose levels by administering to a subject an effective amount of a reductase inhibitor.
[EN] PROSTAGLANDIN REDUCTASE INHIBITORS<br/>[FR] INHIBITEURS DE PROSTAGLANDINE RÉDUCTASES
申请人:ABGENOMICS CORP
公开号:WO2007082178A2
公开(公告)日:2007-07-19
[EN] A method of inhibiting 15-keto prostaglandin-?13-reductase 2 by contacting 15-keto prostaglandin-?13-reductase 2 with an aryl compound of Formula (I), (II), (III), or (IV) shown herein. Also disclosed are methods of treating peroxisome proliferators-activated receptor related diseases and lowering blood glucose levels by administering to a subject in need thereof an effective amount of such an aryl compound. [FR] Procédé d'inhibition de la 15-céto-prostaglandine-?13-réductase 2 par la mise en contact de la 15-céto-prostaglandine-?13-réductase 2 avec un composé aryle de formule (I), (II), (III) ou (IV) illustrée dans la présente invention. La présente invention concerne également des procédés de traitement de maladies liées au récepteur activé par des proliférateurs de peroxysome et d'abaissement des taux de glucose sanguin en administrant une quantité efficace de ce composé d'aryle à un sujet nécessitant un tel traitement.
Synthesis and evaluation of new chalcones, derived pyrazoline and cyclohexenone derivatives as potent antimicrobial, antitubercular and antileishmanial agents
作者:Vikramdeep Monga、Kamya Goyal、Mario Steindel、Manav Malhotra、Dhanji P. Rajani、Smita D. Rajani
DOI:10.1007/s00044-013-0803-1
日期:2014.4
A series of chalcones (1-8) were prepared by Claisen-Schmidt condensation of 3-nitroacetophenone with various aldehydes. These chalcones on cyclization with hydrazine hydrate in the presence of glacial acetic acid, hydrazine hydrate in absolute ethanol and ethyl acetoacetate in the presence of barium hydroxide gave corresponding N-acetyl pyrazolines (9-16), N-unsubstituted pyrazolines (17-19) and cyclohexenone derivatives (20-22). All the synthesized compounds were evaluated for their in vitro antibacterial and antifungal activity by using broth microdilution method, and many compounds showed promising activity against various tested bacteria and fungi. Among various tested compounds, 16 and 19 exhibited strongest activities against Streptococcus pyogenes and Pseudomonas aeruginosa; both have MIC value of 25 mu g/mL, which is fourfold greater than the standard drug. Many compounds showed good activity against Candida albican. Analogs 11, 12, 15-17 and 19 displayed two- to fivefold greater activity against C. albican as compared to the standard drug. Results of antitubercular evaluation revealed that compounds 4 and 19 displayed strong antimycobacterial activity against H(37)Rv having MIC of 25 and 62.5 mu g/mL, respectively. All analogs were found to be inactive against Leishmania braziliensis except analogs 4 and 5 which exhibited strong leishmanicidal activity against Leishmania promastigotes with IC50 values of 9.3 and 8.9 mu g/mL, respectively.