2- and 3-phenylsulfonylindoles – synthetic equivalents of unsubstituted indole in N-alkylation reactions
摘要:
The N-alkylation of 2- and 3-phenylsulfonylindoles under various conditions and the subsequent removal of the activating phenylsulfonyl group by reductive desulfonylation using Raney nickel leads to N-alkylindoles in high yield. 2-Phenylsulfonylindole readily undergoes the Mitsunobu reaction, while isomeric 3-phenylsulfonylindole is relatively inert under these conditions.
作者:Eugenio Gandolfo、Xinjun Tang、Sudipta Raha Roy、Paolo Melchiorre
DOI:10.1002/anie.201910168
日期:2019.11.18
Photochemical enantioselective nickel-catalyzed cross-coupling reactions are difficult to implement. We report a visible-light-mediated strategy that successfully couples symmetrical anhydrides and 4-alkyl dihydropyridines (DHPs) to afford enantioenriched α-substituted ketones under mild conditions. The chemistry does not require exogenous photocatalysts. It is triggered by the direct excitation of
Antifungal and/or antiparasitic pharmaceutical composition and novel indole derivatives as active principle of such a composition
申请人:——
公开号:US20040067998A1
公开(公告)日:2004-04-08
The present invention relates to novel indole derivatives, their method of preparation and their pharmacological activity as antimycotic and/or antiparasitic compounds.
An Orally Bioavailable, Indole-3-glyoxylamide Based Series of Tubulin Polymerization Inhibitors Showing Tumor Growth Inhibition in a Mouse Xenograft Model of Head and Neck Cancer
作者:Helen E. Colley、Munitta Muthana、Sarah J. Danson、Lucinda V. Jackson、Matthew L. Brett、Joanne Harrison、Sean F. Coole、Daniel P. Mason、Luke R. Jennings、Melanie Wong、Vamshi Tulasi、Dennis Norman、Peter M. Lockey、Lynne Williams、Alexander G. Dossetter、Edward J. Griffen、Mark J. Thompson
DOI:10.1021/acs.jmedchem.5b01312
日期:2015.12.10
A number of indole-3-glyoxylamides have previously been reported as tubulin polymerization inhibitors, although none has yet been successfully developed clinically. We report here a new series of related compounds, modified according to a strategy of reducing aromatic ring count and introducing a greater degree of saturation, which retain potent tubulin polymerization activity but with a distinct SAR from previously documented libraries. A subset of active compounds from the reported series is shown to interact with tubulin at the colchicine binding site, disrupt the cellular microtubule network, and exert a cytotoxic effect against multiple cancer cell lines. Two compounds demonstrated significant tumor growth inhibition in a mouse xenograft model of head and neck cancer, a type of the disease which often proves resistant to chemotherapy, supporting further development of the current series as potential new therapeutics.
tert-Butyl (2S)-(p-tolylsulfonyloxy)propionate — a suitable reagent for the direct alkylation of indole derivatives
作者:A. V. Kurkin、D. S. Belov、M. A. Yurovskaya
DOI:10.1007/s10593-008-0160-z
日期:2008.9
A new method is proposed for the synthesis of indole derivatives containing a chiral substituent at the nitrogen atom, which includes the direct alkylation of indole derivatives with tert-butyl (2S)-(p-tolylsulfonyloxy)propionate, obtained from commercial ethyl (S)-lactate with subsequent conversion to the corresponding p-toluenesulfonyloxy derivative by hydrolysis, and esterification.
Acylated indole derivatives, processes for their preparation and pharmaceutical compositions and drugs comprising them