Structure activity relationship, cytotoxicity and evaluation of antioxidant activity of curcumin derivatives
作者:Pramod K. Sahu、Praveen K. Sahu、Puran L. Sahu、Dau D. Agarwal
DOI:10.1016/j.bmcl.2015.12.013
日期:2016.2
compound 3c, (IC50 value 6.25 μM) has shown better cytotoxicity effect against three cell lines. According to results of SAR study, it was found that 4H-pyrimido[2,1-b]benzothiazole derivatives (2e and 2f), pyrazoles (3a, 3b, 3c and 3d) benzylidenes (4d) exhibited better antioxidant activity than curcumin. A correlation of structure and activitiesrelationship of these compounds with respect to drug
Novel curcumin analogs targeting TNF-induced NF-κB activation and proliferation in human leukemic KBM-5 cells
作者:Ajit P. Zambre、V.M. Kulkarni、Subhash Padhye、Santosh K. Sandur、Bharat B. Aggarwal
DOI:10.1016/j.bmc.2006.06.056
日期:2006.11
Novel curcumin analogs were synthesized using Knoevenagel condensation to convert enolic diketones of curcumin into non-enolizable ones and Schiff bases were prepared using a bioactive thiosemicarbazide pharmacophore. Copper(II) conjugates of all synthesized ligands were prepared and structurally characterized as well as evaluated for their potential of inhibiting TNF-induced NF-kappa B activation and proliferation in human leukemic KBM-5 cells wherein compound 13 was found to be more potent than curcumin. Compounds were further examined on other tumor cell lines such as Jurkat, H1299, and MM1, respectively. (c) 2006 Elsevier Ltd. All rights reserved.
Synthesis and evaluation of antimicrobial activity of 4H-pyrimido[2,1-b]benzothiazole, pyrazole and benzylidene derivatives of curcumin
作者:Pramod K. Sahu、Praveen K. Sahu、S.K. Gupta、D. Thavaselvam、D.D. Agarwal
DOI:10.1016/j.ejmech.2012.05.020
日期:2012.8
A novel, one-pot, simple, efficient procedure for 4H-pyrimido[2,1-b]benzothiazole (4a-h), pyrazole (6a-d) and benzylidene (7a-d) derivatives of curcumin under solvent and solvent free conditions in microwave with good yield is have been synthesized. The synthesized compounds were evaluated for their antibacterial activity against gram-positive and gram-negative bacteria viz. Staphylococcus aureus, Pseudomonas aeruginosa, Salmonella typhi, Escherichia coli, Bacillus cereus and Providencia rettgeri and antifungal activity against fungi viz Aspergillus niger, Aspergillus fumigates, Aspergillus flavus. Detailed mechanistic study shows reaction proceeds through Knoevenagel type intermediate 3a which has been suggested as key intermediate for reaction (Fig. 3). (C) 2012 Elsevier Masson SAS. All rights reserved.
Bioactive Derivatives of Curcumin Attenuate Cataract Formation<i>In Vitro</i>
作者:Asha Radha、Sudha Devi Rukhmini、Sasikala Vilasini、Priya Rajan Sakunthala、Balachandran Sreedharan、Mohanan Puzhavoorparambil Velayudhan、Annie Abraham
DOI:10.1111/cbdd.12021
日期:2012.12
In this study, curcumin derivatives salicylidenecurcumin (CD1) and benzalidenecurcumin (CD2)] were prepared, and their biological activity was compared in in vitro selenite‐induced cataract model. The antioxidant activity was studied using DPPH radical scavenging assay. Knoevenagel condensates of curcumin exhibited higher DPPH radical scavenging activity compared with curcumin. The anticataractogenic potential of curcumin derivatives was analyzed using lens organ culture method. The activity of antioxidant enzymes and calcium homeostasis was reversed to near normal levels following treatment in organ cultured rat lenses. These results indicated that curcumin and its derivatives—CD1 and CD2—are beneficial against selenite‐induced cataract in vitro. Of these, CD1 is having higher bioactive potential compared with curcumin and CD2.