SYNTHESIS AND ANTITUBERCULAR ACTIVITY OF PYRIDAZINONE DERIVATIVES
摘要:
Two series of pyridazinone derivatives (19-34) were synthesized and evaluated for antitubercular activities against Mycobacterium tuberculosis H(37)Rv strain. The results illustrated that among the synthesized compounds, compound 25, 5-(4-hydroxy-3-methoxybenzyl)-3-(4-chloro-phenyl)-1,6-dihydro-6-pyridazinone emerged as a lead compound with good antitubercular activity. Four more compounds, (21, 22, 29 & 33) were significant in their antitubercular action.
Synthesis and biological evaluation of some new pyridazinone derivatives
摘要:
A series of pyridazinone derivatives (19-34) were synthesized with an aim to synthesize safer anti-inflammatory agents. The compounds were evaluated for their anti-inflammatory, analgesic, ulcerogenic and lipid peroxidation (LPO) actions. The percentage inhibition in edema at different time intervals indicated that compounds 20, 26, 28 and 34 exhibited good anti-inflammatory potential, comparable with that of ibuprofen (85.77%) within a range of 67.48-77.23%. The results illustrate that 5-(4-fluoro-benzyl)-3-(4-chloro-phenyl)-1,6-dihydro-6-pyridazinone (26) and 5-(4-chloro-benzyl)-3-(4-chloro-phenyl)-1,6-dihydro-6-pyridazinone (20) showed best anti-inflammatory activity. Furthermore, activity is more in case of chloro substitution as compared with methyl-substitution. The compounds synthesized were also evaluated for their ulcerogenic and LPO action and showed superior gastrointestinal safety profile along with reduction in LPO as compared with that of the ibuprofen.
An asymmetric [3+2] cycloaddition reaction ofN-2,2,2-trifluoroethylisatin ketimines and 3-alkenyl-5-arylfuran-2(3H)-ones was developed with 1 mol% thiourea–tertiary amine.
Synthesis and biological evaluation of some new pyridazinone derivatives
作者:Asif Husain、Sushma Drabu、Nitin Kumar、M. Mumtaz Alam、Aftab Ahmad
DOI:10.3109/14756366.2010.548810
日期:2011.10.1
A series of pyridazinone derivatives (19-34) were synthesized with an aim to synthesize safer anti-inflammatory agents. The compounds were evaluated for their anti-inflammatory, analgesic, ulcerogenic and lipid peroxidation (LPO) actions. The percentage inhibition in edema at different time intervals indicated that compounds 20, 26, 28 and 34 exhibited good anti-inflammatory potential, comparable with that of ibuprofen (85.77%) within a range of 67.48-77.23%. The results illustrate that 5-(4-fluoro-benzyl)-3-(4-chloro-phenyl)-1,6-dihydro-6-pyridazinone (26) and 5-(4-chloro-benzyl)-3-(4-chloro-phenyl)-1,6-dihydro-6-pyridazinone (20) showed best anti-inflammatory activity. Furthermore, activity is more in case of chloro substitution as compared with methyl-substitution. The compounds synthesized were also evaluated for their ulcerogenic and LPO action and showed superior gastrointestinal safety profile along with reduction in LPO as compared with that of the ibuprofen.
Agnihotri, Kanwaljit; Bowden, Keith, Journal of Chemical Research, Miniprint, 1997, # 8, p. 1929 - 1946
作者:Agnihotri, Kanwaljit、Bowden, Keith
DOI:——
日期:——
Stereospecific palladium(II)-catalyzed cyclocarbonylation of 3-aryl-1-propynes and iodo arenes or acid chlorides to form (E)-3-arylidenebutenolides
作者:Yujin Huang、Howard Alper
DOI:10.1021/jo00014a039
日期:1991.7
Iodoarenes react with 3-aryl-1-propynes and carbon monoxide, in the presence of palladium acetate and triphenylphosphine, to form (E)-arylidenebutenolides in 33-88% isolated yields. The same product is formed by substitution of acid chloride for a iodoarene.
Synthesis of Arylidene Derivatives of 1-Aryl-3H-pyrrol-2-ones