Reactions of 2-lithiated indoles with elemental sulfur. Formation of pentathiepino[6,7-b]indoles and indoline-2-thiones
摘要:
The reactions of 2-lithiated indole and 1-methylindole with elemental sulfur have been studied, leading e.g. to a rational approach to pentathiepino[6,7-b]indoles 5 and 10. Notable amounts of the previously known tetrathiocino[5,6-b:8,7-b ' ]diindole 11 could be observed as a side reaction in the preparation of 10. Treatment of the anions of indoline-2-thiones 6 or 7 with sulfur also gave the pentathiepins 5 or 10, respectively. In addition, a convenient and clean lithiation route to indoline-2-thione (6) has been developed. (C) 2001 Elsevier Science Ltd. All rights reserved.
Regioselective synthesis of pentathiepines fused with pyrrole, thiophene, or indole rings
作者:L. S. Konstantinova、S. A. Amelichev、O. A. Rakitin
DOI:10.1007/s11172-006-0551-1
日期:2006.11
Pentathiepines fused with pyrrole, thiophene, or indole rings were obtained by reactions of the corresponding heterocycles or their tetrahydro derivatives with a prepared mixture of sulfur monochloride and DABCO.
A one-step synthesis of fused pentathiepinsElectronic supplementary information (ESI) available: characterization of compounds 2–5, 9, and 11. See http://www.rsc.org/suppdata/cc/b2/b203349f/
作者:Lidia S. Konstantinova、Oleg A. Rakitin、Charles W. Rees
DOI:10.1039/b203349f
日期:2002.5.17
Treatment of nucleophilic heterocycles like pyrroles and thiophene, and their tetrahydro derivatives, with S2Cl2 and a base in chloroform at room temperature provides a simple one-pot synthesis of heterocyclic fused mono and bis pentathiepins such as 2, 3, 4, 5, 9, and 11.
作者:Stanislav A. Amelichev、Lidia S. Konstantinova、Konstantin A. Lyssenko、Oleg A. Rakitin、Charles W. Rees
DOI:10.1039/b508186f
日期:——
Treatment of nucleophilic heterocycles like pyrroles and thiophenes, and their tetrahydro derivatives, with S2Cl2 and DABCO in chloroform at room temperature provides a simple one-pot synthesis of fused mono and bispentathiepins. N-Methylpyrrole and its 2-chloro and 2,5-dichloro derivatives and N-methylpyrrolidine all give the same dichloropentathiepin 1a. N-Ethyl, isopropyl and tert-butylpyrrolidine behave similarly; the isopropylpyrrolidine also gives the bispentathiepin 6 which undergoes an intriguing rearrangement to the symmetrical monopentathiepin 1c. N-Methyl and ethyl indole give either 2,3-dichloro derivatives 8 or the pentathiepinoindoles 9, depending upon the reaction conditions. Thiophene and tetrahydrothiophene give the pentathiepin 10. X-Ray crystal structures are provided for the pentathiepins 1a and 1d, and possible reaction pathways are suggested for the extensive cascade reactions reported.
Investigation of the Pentathiepin Functionality as an Inhibitor of Feline Immunodeficiency Virus (FIV) via a Potential Zinc Ejection Mechanism, as a Model for HIV Infection
作者:Christopher R. M. Asquith、Tuomo Laitinen、Lidia S. Konstantinova、Graham Tizzard、Antti Poso、Oleg A. Rakitin、Regina Hofmann‐Lehmann、Stephen T. Hilton
DOI:10.1002/cmdc.201800718
日期:2019.2.19
A small diverse library of pentathiepin derivatives were prepared to evaluate their efficacy against the nucleocapsidprotein function of the felineimmunodeficiencyvirus (FIV) as a model for HIV, using an in vitro cell culture approach. This study led to the development of nanomolar active compounds with low toxicity.
Synthesis and Identification of Pentathiepin-Based Inhibitors of Sporothrix brasiliensis
作者:Christopher R. M. Asquith、Ana C. S. Machado、Luisa H. M. de Miranda、Lidia S. Konstantinova、Rodrigo Almeida-Paes、Oleg A. Rakitin、Sandro A. Pereira
DOI:10.3390/antibiotics8040249
日期:——
Sporothrix brasiliensis is the causative agent of zoonotic sporotrichosis in Brazil and is currently referred to as the most virulent species among those of clinical importance within the genus. Sporotrichosis is an emergent disease that has come to the forefront over two decades with a recent hot spot of sporotrichosis infection emerging in the state of Rio de Janeiro. The source of these infections