21815-91-8Relevant articles and documents
Construction of Heteroacenes with Fused Thiophene and Pyrrole Rings via the Fischer Indolization Reaction
Irgashev, Roman A.,Karmatsky, Arseny A.,Rusinov, Gennady L.,Charushin, Valery N.
, p. 804 - 807 (2016)
A convenient approach to ladder-type 6H-benzo[4′,5′]thieno[2′,3′:4,5]thieno[3,2-b]indoles bearing various substituents in both terminal benzene rings has been developed. The protocol suggested for preparing these N,S-heteroacenes is based on using easily
Novel derivatives of pyridylbenzo[b]thiophene-2-carboxamides and benzo[b]thieno[2,3-c]naphthyridin-2-ones: minor structural variations provoke major differences of antitumor action mechanisms
Ester, Katja,Hranjec, Marijana,Piantanida, Ivo,?aleta, Irena,Jarak, Ivana,Paveli?, Kre?imir,Kralj, Marijeta,Karminski-Zamola, Grace
, p. 2482 - 2492 (2009)
Novel cyano- and 2-imidazolinyl-substituted derivatives of pyridylbenzo[b]thiophene-2-carboxamides 4, 5, 10-13 and benzo[b]thieno[2,3-c] naphthyridin-2-ones 6, 7, 14-17 were prepared. All derivatives showed a prominent antiproliferative effect. Extensive DNA binding studies and additional biological evaluations point to various modes/targets of action. The results strongly support intercalation into DNA as a dominant binding mode of fused analogues, which was substantiated using topoisomerase I inhibition assay. Most intriguingly, only minor structural difference between "nonfused" compounds 12 and 13 has strong impact on the interactions with DNA; while 13 binds within the DNA minor groove in the form of dimer, 12 does not form significant interactions with DNA. The assumption that severe mitotic impairment (G2/M phase arrest) induced by 12 could point to tubulin, another important target, was confirmed by its obvious anti-tubulin activity observed in immunofluorescence assay, whereby treated cells showed disruption of microtubule formation comparable to the effect obtained by paclitaxel, a well-known tubulin antagonist chemotherapeutic.
Construction of 2,3-disubstituted benzo[: B] thieno[2,3- d] thiophenes and benzo[4,5]selenopheno[3,2- b] thiophenes using the Fiesselmann thiophene synthesis
Demina, Nadezhda S.,Irgashev, Roman A.,Rusinov, Gennady L.
, p. 3164 - 3168 (2020/05/08)
A series of 3-(hetero)aryl-substituted benzo[b]thieno[2,3-d]thiophenes, bearing various electron withdrawing groups at C-2 position of their scaffolds, were obtained using a convenient approach based on the Fiesselmann thiophene synthesis. To realize this strategy, the Friedel-Crafts acylation of (hetero)arenes with easily accessible 3-chlorobenzo[b]thiophene-2-carbonyl chlorides was initially performed to afford 3-chloro-2-(hetero)aroylbenzo[b]thiophenes. The latter ketones were treated either with methyl thioglycolate in the presence of DBU and calcium oxide powder or successively with sodium sulfide, an alkylating agent, containing methylene active component, and also DBU and calcium oxide, to form the desired benzo[b]thieno[2,3-d]thiophene derivatives. In addition, similar benzo[4,5]selenopheno[3,2-b]thiophene derivatives were prepared in the same manner using 3-bromobenzo[b]selenophen-2-yl substrates. The obtained functional derivatives of both benzo[b]thieno[2,3-d]thiophene and benzo[4,5]selenopheno[3,2-b]thiophene are of interest for further elaboration of organic semiconductor materials.
A compound and its in the Parkinson's disease in the application of the
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Paragraph 0025, (2018/02/03)
The invention discloses a compound and an application thereof in the aspect of Parkinson's disease. The compound, for short, is SAG and JK60. The ataxia caused by the Parkinson's disease is single-side rotation. The invention also includes the application
