Effect of ring A and ring B substitution on the cytotoxic potential of pyrazole tethered chalcones
摘要:
Chalcone is an aromatic ketone that forms the central core for a variety of important biological compounds, which are collectively known as chalcones. The cytotoxic potential of chalcones which consists of C-6-C-3-C-6 units gets enhanced by the incorporation of pyrazole ring as proved by our earlier studies. Thus in the present work, pyrazoles of chalcones with ring A substituted by furan, naphthalene and variety of substituted phenyl rings has been prepared and evaluated for in vitro cytotoxic activity against PC-3, OVCAR, IMR-32, HEP-2 human cancer cell lines.All the synthesized compounds were evaluated for in vitro cytotoxicity against PC-3, OVCAR, IMR-32, HEP-2 human cancer cell lines. Compound 68 was found to be the most potent showing broad spectrum of cytotoxicity against all the cell lines .
Synthesis and QSAR analysis of chalcone derivatives as nitric oxide inhibitory agent
摘要:
In this study, thirty-eight chalcone analogs were synthesized and evaluated for nitric oxide (NO) inhibition activity on RAW 264.7 cells. Among these compounds, chalcones bearing furanyl group showed remarkable anti-inflammatory activity. Both compounds 2d and 2j were identified as the most potent NO inhibitor on IFN-gamma/LPS-activated RAW 264.7 cells. In order to examine the structure-activity relationship, a 3D QSAR analysis was carried out by comparative molecular field analysis (CoMFA) method on the selected chalcones. Partial least square analysis produced a statistically coherent model with good predictive value, r (2) = 0.989 and a good cross validated value, q (2) = 0.583.
Thieny/Furanyl-hydroxyphenylpropenones as Inhibitors of LPS-induced ROS and NO Production in RAW 264.7 Macrophages, and Their Structure-Activity Relationship Study
作者:Tara Man Kadayat、Mi Jin Kim、Tae-Gyu Nam、Pil-Hoon Park、Eung-Seok Lee
DOI:10.5012/bkcs.2014.35.8.2481
日期:2014.8.20
Twelve thienyl/furanyl-hydroxyphenylpropenones were systematically designed and synthesized, and evaluated for their inhibitory effect on LPS-induced ROS and NO production in RAW 264.7 macrophages. Compound 11 displayed the most significant inhibitory activity of LPS-induced ROS and NO production in RAW 264.7 macrophages. Structure-activity relationship study indicated that para-hydroxyphenyl moiety plays an important role for inhibitory activities on both LPS-induced ROS and NO production as well as 3-thienyl moiety on molecule.
A rational approach for the design and synthesis of 1-acetyl-3,5-diaryl-4,5-dihydro(1H)pyrazoles as a new class of potential non-purine xanthine oxidase inhibitors
作者:Kunal Nepali、Gurinderdeep Singh、Anil Turan、Amit Agarwal、Sameer Sapra、Raj Kumar、Uttam C. Banerjee、Prabhakar K. Verma、Naresh K. Satti、Manish K. Gupta、Om P. Suri、K.L. Dhar
DOI:10.1016/j.bmc.2011.01.058
日期:2011.3
Xanthineoxidase is a complex molybdoflavoprotein that catalyses the hydroxylation of xanthine to uric acid. Fifty three analogues of 1-acetyl-3,5-diaryl-4,5-dihydro(1H)pyrazoles were rationallydesigned and synthesized and evaluated for in vitro xanthineoxidase inhibitory activity for the first time. Some notions about structure activity relationships are presented. Six compounds 41, 42, 44, 46,
Synthesis and Evaluation of Chalcone Derivatives as Inhibitors of Neutrophils' Chemotaxis, Phagocytosis and Production of Reactive Oxygen Species
作者:Syed N. A. Bukhari、Yasmin Tajuddin、Vannessa J. Benedict、Kok W. Lam、Ibrahim Jantan、Juriyati Jalil、Malina Jasamai
DOI:10.1111/cbdd.12226
日期:2014.2
Inhibitory effects on neutrophils' chemotaxis, phagocytosis and production of reactive oxygen species (ROS) are among the important targets in developing anti‐inflammatory agents and immunosuppressants. Eight series of chalcone derivatives including five newly synthesized series were assessed for their inhibitory effects on chemotaxis, phagocytosis and ROS production in human polymorphonuclear neutrophils (PMNs). Inhibition of PMNs' chemotaxis and phagocytosis abilities were investigated using the Boyden chamber technique and the Phagotest kit, respectively, while ROS production was evaluated using luminol‐ and lucigenin‐based chemiluminescence assay. The new derivatives (4d and 8d), which contain 4‐methylaminoethanol functional group were active in all the assays performed. It was also observed that some of the compounds were active in inhibiting chemotaxis while others suppressed phagocytosis and ROS production. The information obtained gave new insight into chalcone derivatives with the potential to be developed as immunomodulators.