440094-90-6Relevant articles and documents
Synthesis of benzamide derivatives of anacardic acid and their cytotoxic activity
Chandregowda, Venkateshappa,Kush, Anil,Reddy, Goukanapalli Chandrasekara
experimental part, p. 2711 - 2719 (2009/10/02)
Several benzamide derivatives were synthesized from anacardic acid (1a) which was the product of hydrogenation of the naturally occurring anacardic acid mixture (1a-d), a major constituent of cashew nut shell liquid. Anacardic acid (1a) was first alkylated followed by hydrolysis of the ester to obtain synthones namely, 2-ethoxy-6-pentadecylbenzoic acid (5) and 2-isopropoxy-6-pentadecylbenzoic acid (6). These salicylic acid derivatives were then coupled with a variety of anilines to obtain novel benzamide compounds (7-39). Cytotoxic effect of these synthesized compounds was tested on HeLa cell line of wild type with relatively high expression of p300 and on HCT-15, which is p300 negative. Of all the compounds, 2-isopropoxy-6-pentadecyl-N-pyridin-4-ylbenzamide (27), 2-ethoxy-N-(3-nitrophenyl)-6-pentadecylbenzamide (22) and 2-ethoxy-6-pentadecyl-N-pyridin-4-ylbenzamide (10) were found to be more potent with the respective IC50 values 11.02 μM, 13.55 μM, 15.29 μM on HeLa cell line. Their activities are comparable with garcinol which is a cell permeable histone acetyltransferase (HAT) inhibitor and 10 fold more active than p300 HAT activators so far reported.
1,4-dihydropyridine and pyridine compounds as calcium channel blockers
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Page/Page column 36-37, (2010/02/05)
The present invention is directed in part towards methods of modulating the function of calcium channels with pyridine- or 1,4-dihydropyridine-based compounds. In addition, the invention describes methods of preventing and treating protein kinase-related
Synthesis and evaluation of a new class of nifedipine analogs with T-type calcium channel blocking activity
Phani Kumar,Stotz, Stephanie C.,Paramashivappa,Beedle, Aaron M.,Zamponi, Gerald W.,Srinivasa Rao
, p. 649 - 658 (2007/10/03)
We have synthesized a novel series of 18 dialkyl 1,4-dihydro-4-(2′alkoxy-6′-pentadecylphenyl)-2,6-dimethyl-3,5 pyddine dicarboxylates from anacardic acid, a natural compound found in cashew nut shells, and investigated their blocking action on L- and T-type calcium channels transiently expressed in tSA-201 cells. The IC50 values for L-type calcium channel block obtained with the series ranged from 1 to ～40 μM, with higher affinities being favored by increasing the size of the alkoxy group on the 4-phenyl ring and ester substituent in the 3,5 positions. A detailed analysis of the strongest L-type channel blocker of the series (PPK-12) revealed that block was poorly reversible and mediated an apparent speeding of the time course of inactivation. Moreover, in the presence of PPK-12, the midpoint of the steady state inactivation curve was shifted by 20 mV toward more hyperpolarized potentials, resulting in an increase in blocking efficacy at more depolarized holding potentials. Surprisingly, PPK-12 blocked T- and L-type calcium channels with similar affinities. One of the weakest L-type channel inhibitors (PPK-5) exhibited a T-type channel affinity that was similar to that seen with PPK-12, resulting in a 40-fold selectivity of PPK-5 for T- over L-type channels. Thus, dialkyl 1,4-dihydro-4-(2′alkoxy-6′-pentadecylphenyl)-2,6-dimethyl-3,5 pyridine dicarboxylates may serve as excellent candidates for the development of T-type calcium-channel specific blockers.
