Bei dem Verfahren zur Herstellung von aromatischen, heteroaromatischen oder Farbstoff-Disulfiden durch Reduktion der entsprechenden Sulfochloride mit lodwasserstoffsäure oder mit lodwasserstoffsäure liefernden Substanzen in Gegenwart von Reduktionsmitteln, die lod in lodwasserstoffsäure überführen, wird die Reaktion in einem aus Wasser und einer organischen Phase bestehenden 2-Phasensystem in Gegenwart eines Phasentransferkatalysators durchgeführt.
Design, synthesis, and biological evaluation of novel N-γ-carboline arylsulfonamides as anticancer agents
作者:Jing Chen、Tao Liu、Rui Wu、Jianshu Lou、Ji Cao、Xiaowu Dong、Bo Yang、Qiaojun He、Yongzhou Hu
DOI:10.1016/j.bmc.2010.10.047
日期:2010.12
A series of novel N-gamma-carboline arylsulfonamide derivatives designed based on the common feature of colchicine binding site inhibitors were synthesized and evaluated for their antiproliferative activity in vitro against five human cancer cell lines. Most of the compounds showed moderate to potent cytotoxic activities against all the tested cells. Preliminary mechanism research on one of the most potent compound 6p indicated that it was a potent tubulin polymerization inhibitor, with IC50 value of 3.8 mu M, equivalent to that of CA-4, and arresting cell cycle in G(2)/M phase. (C) 2010 Elsevier Ltd. All rights reserved.
Synthesis, pharmacological activity and comparative QSAR modeling of 1,5-N,N′-substituted-2-(substituted naphthalenesulphonyl) glutamamides as possible anticancer agents
Based on our earlier QSAR study, a series of 1, 5-N,N'-substituted-2-(substituted naphthalenesulphonyl) glutamamides were synthesized as possible anticancer agents. Anticancer activities of these synthesized compounds were evaluated in vivo on Swiss Albino mice against Ehrlich Ascites Carcinoma (EAC) cells where inhibitions of tumor cell and tumor weight were considered as biological activity parameters. A comparative QSAR study was done with a set of descriptors and logarithm of tumor cell inhibition. The result shows the importance of topological parameters like ETSA and RTSA indices as well as electronic parameter like Wang-Ford charges of different atoms. Electrophilic attack at atom number 5 and increased number of chlorine atom may be favorable whereas presence of methoxy group at the atom number 8 in naphthalene ring may be detrimental to the activity. (C) 2010 Elsevier Masson SAS. All rights reserved.
Atroposelective radical aryl migration reactions from sulfur to carbon
作者:Birte Schulte、Roland Fröhlich、Armido Studer
DOI:10.1016/j.tet.2008.08.111
日期:2008.12
The paper describes stereoselective radical aryl migration reactions from sulfur in sulfonates to aryl radicals for the synthesis of axially chiral biaryls. A chirality center in secondary benzylic sulfonates is used to diastereoselectively (atroposelectively) install a stereogenic axis via a 1,5 aryl migration reaction. Atroposelectivity has not been investigated in stereoselective radical chemistry