Molecular design, synthesis and biological evaluation of cyclic imides bearing benzenesulfonamide fragment as potential COX-2 inhibitors. Part 2
作者:Ibrahim A. Al-Suwaidan、Amer M. Alanazi、Adel S. El-Azab、Abdulrahman M. Al-Obaid、Kamal E.H. ElTahir、Azza R. Maarouf、Mohamed A. Abu El-Enin、Alaa A.-M. Abdel-Aziz
DOI:10.1016/j.bmcl.2013.02.107
日期:2013.5
A group of cyclic imides (1-10) was designed for evaluation as a selective COX-2 inhibitors and investigated in vivo for their anti-inflammatory activity. Compounds 6a, 6b, 8a, 8b, 9a, 9b, 10a and 10b were proved to be potent COX-2 inhibitors with IC50 range of 0.1-4.0 mu M. In vitro COX-1/COX-2 inhibition structure-activity studies identified compound 8a as a highly potent (IC50 = 0.1 mu M), and an extremely selective [COX-2 (SI) > 1000] comparable to celecoxib [COX-2 (SI) > 384], COX-2 inhibitor that showed superior anti-inflammatory activity (ED50 = 72.4 mg/kg) relative to diclofenac (ED50 = 114 mg/kg). Molecular modeling was carried out through docking the designed compounds into the COX-2 binding site to predict if these compounds have analogous binding mode to the COX-2 inhibitors. The study showed that the homosulfonamide fragment of 8a inserted deep inside the 2 degrees-pocket of the COX-2 active site, where the SO2NH2 group underwent H-bonding interaction with Gln(192)(2.95 angstrom), Phe(518)(2.82 angstrom) and Arg(513)(2.63 and 2.73 angstrom). Docking study of the synthesized compound 8a into the active site of COX-2 revealed a similar binding mode to SC-558, a selective COX-2 inhibitor. (C) 2013 Elsevier Ltd. All rights reserved.
Carbonic anhydrase inhibitors: Synthesis and inhibition of the cytosolic mammalian carbonic anhydrase isoforms I, II and VII with benzene sulfonamides incorporating 4,5,6,7-tetrachlorophthalimide moiety
作者:Kalyan K. Sethi、Saurabh M. Verma、Muhammet Tanç、Fabrizio Carta、Claudiu T. Supuran
DOI:10.1016/j.bmc.2013.06.035
日期:2013.9
A series of 4,5,6,7-tetrachloro-1,3-dioxoisoindolin-2-yl benzenesulfonamide derivatives (compounds 1-8) was synthesized by reaction of benzene sulfonamides incorporating primary amino moieties with 4,5,6,7-tetrachlorophthalic anhydride. These sulfonamides were assayed as inhibitors of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1). Some of these compounds showed very good in vitro human carbonic anhydrase (hCA) isoforms I, II and VII inhibitory properties, with affinities in the low nanomolar range. Inhibition activities against hCA I were in the range of 159-444 nM; against hCA II in the range of 2.4-4515 nM, and against hCA VII in the range of 1.3-469 nM. The structure-activity relationship (SAR) with this series of sulfonamides is straightforward, with the main features leading to good activity for each isoform being established. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis and Human Carbonic Anhydrase I, II, IX, and XII Inhibition Studies of Sulphonamides Incorporating Mono-, Bi- and Tricyclic Imide Moieties
anhydrides. These sulphonamides were investigated as humancarbonicanhydrases (hCAs, EC 4.2.1.1) I, II, IX, and XII inhibitors. hCA I was inhibited with inhibition constants (Kis) ranging from 49 to >10,000 nM. The physiologically dominant hCA II was significantly inhibited by most of the sulphonamide with the Kis ranging between 2.4 and 4515 nM. hCA IX and hCA XII were inhibited by these sulphonamides
新的衍生物是通过含氨基的芳香磺酰胺与单、双和三环酸酐反应合成的。这些磺胺类药物被研究为人类碳酸酐酶 (hCAs, EC 4.2.1.1) I、II、IX 和 XII 抑制剂。hCA I 受到抑制常数 (Kis) 范围从 49 到 >10,000 nM 的抑制。生理上占优势的 hCA II 被大多数磺胺显着抑制,Kis 范围在 2.4 和 4515 nM 之间。hCA IX 和 hCA XII 分别在 9.7 至 7766 nM 和 14 至 316 nM 的范围内被这些磺胺类药物抑制。在分子对接研究的帮助下,结构-活性关系(SAR)被合理化。
ISLAM, A. M.;EL-SHARIEF, A. M. SH.;EL-MAGHRABY, A. A.;EL-SAID, A. S., EGYPT. J. SCI., 1982, 25, N 6, 513-520
作者:ISLAM, A. M.、EL-SHARIEF, A. M. SH.、EL-MAGHRABY, A. A.、EL-SAID, A. S.