A simple and effective method has been elaborated for the synthesis of thieno[2,3- B]indole ringsystem. It is based on the electrophilic recyclization of 2-alkyl-5-(2-isothiocyanoaryl)furans in the presence of anhydrous AlCl 3 .
on the acid-catalyzed recyclization of N-[2-(5-alkyl-2-furyl)phenyl]-2-aminoacetamides and permits the formation of both diazepine and pyrrole rings in one pot. The reaction proceeds via furanringopening to give the diketone moiety followed by consecutive reactions of the free amino group with both carbonyl functions. furans-ringopening-ringclosure- fused-ring system - pyrrolo[1,2-d][1,4]benzodiazepines
描述了一种合成吡咯并[1,2- d ] [1,4]苯并二氮杂的新方法。该方法基于N- [2-(5-烷基-2-呋喃基)苯基] -2-氨基乙酰胺的酸催化再循环,并允许在一锅中同时形成二氮杂和吡咯环。该反应通过呋喃开环进行以得到二酮部分,随后是具有两个羰基官能团的游离氨基的连续反应。 呋喃-开环-闭环-稠环系统-吡咯并[1,2- d ] [1,4]苯并二氮杂卓-Paal-Knorr反应
Furan Ring-Opening/Indole Ring-Closure: Pictet-Spengler-Like Reaction of 2-(<i>o</i>-Aminophenyl)furans with Aldehydes
作者:Alexander V. Butin、Maxim G. Uchuskin、Arkady S. Pilipenko、Fatima A. Tsiunchik、Dmitry A. Cheshkov、Igor V. Trushkov
DOI:10.1002/ejoc.200901241
日期:2010.2
new simple approach to 3-(2-acylvinyl)-2-(hetero)aryl-indoles has been developed. The method is based on the acid-catalysed interaction of 2-(2-aminophenyl)furans with (hetero)aromatic aldehydes. The reactions proceed under very mild conditions and lead to indoles containing a reactive α,β-unsaturated ketone moiety, which is suitable for further transformations, in moderate to good yields.
From biomass to medicines. A simple synthesis of indolo[3,2-c]quinolines, antimalarial alkaloid isocryptolepine, and its derivatives
作者:Maxim G. Uchuskin、Arkady S. Pilipenko、Olga V. Serdyuk、Igor V. Trushkov、Alexander V. Butin
DOI:10.1039/c2ob25836f
日期:——
Indolo[3,2-c]quinolines are pharmacologically attractive class of heterocyclic compounds. The method of their synthesis, based on transformation of furfural, which is a large-scale product of treatment of biomass including agricultural and forestry wastes, has been developed. This method was utilized for the total synthesis of antimalarial alkaloid isocryptolepine and its derivatives.
吲哚并[3,2- c ]喹啉是一类具有药理吸引力的杂环化合物。它们的合成方法,基于变换糠醛已开发出大规模处理包括农业和林业废物在内的生物质的产品。该方法用于抗疟生物碱的全合成异隐油平 及其衍生物。
Furan as a 1,3-diketone equivalent: the second type furan recyclization applied to indole synthesis
作者:Alexander V. Butin
DOI:10.1016/j.tetlet.2006.04.080
日期:2006.6
A new approach for the synthesis of indole derivatives based on protolytic recyclization of 2-alkyl-5-(2-tosylaminoaryl)-furans is described. The furan ring in this unusual transformation formally serves as a 1,3-diketone equivalent. (c) 2006 Elsevier Ltd. All rights reserved.