1622-58-8Relevant academic research and scientific papers
Synthesis and?QSAR studies of?novel 1-substituted-2-aminobenzimidazoles derivatives
Guida, Xuan,Jianhua, Han,Xiaomin, Li
, p. 1080 - 1083 (2006)
A series of novel 1-substituted-2-aminobenzimidazole derivatives were synthesized. The structures of the synthesized compounds were confirmed by 1H-NMR spectra and by elemental analysis. Acute toxicities of these compounds were detected on mice via toxicity (logLD50). QSAR analysis of these chemicals was studied on the relationship between acute toxicity and the octanol/water partition coefficient (LogP). The products were identified by the results of elemental analysis and 1H-NMR spectra. The toxicity (logLD50) of 2-aminobenzimidazole 1-substituents were correlated well with the partition coefficient LogP, r = 0.9243. The bioactivity (toxicity) of 2-aminobenzimidazoles can be predicted by the molecular structural parameter such as LogP.
Condensation reactions of vinyl and ethyl derivatives of 2-amino-and 2-formylimidazoles
Balkalova,Domnina,Chipanina,Afonin,Shulunova
, p. 962 - 966 (1999)
New Schiff bases of 1-vinyl-and 1-ethyl-substituted imidazoles and benzimidazoles were synthesized. The condensation reactions of 2-amino-and 2-formylimidazoles with 2-aminobenzimidazoles are virtually independent of the nature of the substituent (CH=CH2 or Et) at position 1 of the heterocycle. The structures of the azomethines synthesized were established by 1H NMR and IR spectroscopy.
Hit-to-lead optimization of novel benzimidazole phenylacetamides as broad spectrum trypanosomacides
Avery, Vicky M.,Baell, Jonathan,McNamara, Nicole,Rahmani, Raphael,Sykes, Melissa L.
supporting information, p. 685 - 695 (2020/08/24)
Trypanosoma cruzi and Trypanosoma brucei are the parasitic causative agents of Chagas disease and human African trypanosomiasis (HAT), respectively. The drugs currently used to treat these diseases are not efficacious against all stages and/or parasite sub-species, often displaying side effects. Herein, we report the SAR exploration of a novel hit, 2-(4-chlorophenyl)-N-(1-propyl-1H-benzimidazol-2-yl)acetamide previously identified from high throughput screens against T. cruzi, Trypanosoma brucei brucei and Leishmania donovani. An informative set of analogues was synthesized incorporating key modifications of the scaffold resulting in improved potency whilst the majority of compounds retained low cytotoxicity against H9c2 and HEK293 cell lines. The SAR observed against T. cruzi broadly matches that observed against T.b. brucei, suggesting the possibility for a broad-spectrum candidate. This class of compounds therefore warrants further investigation towards development as a treatment for Chagas disease and HAT. This journal is
Synthesis and pharmacological activity of 2-(biphenyl-4-yl)imidazo[1,2-a]benzimidazoles
Spasov,Zhukovskaya,Brigadirova,Abbas,Anisimova,Sysoeva,Rashchenko,Litvinov,Mayka, O. Yu.,Babkov,Morkovnik
, p. 1905 - 1912 (2018/02/06)
An efficient method for the synthesis of novel 9H-imidazo[1,2-a]benzimidazole derivatives containing a biphenyl substituent at position 2 was developed. These compounds, belonging to the privileged substructures, have been tested for a wide range of pharmacological activities in the in vitro test panel. It was shown that the synthesized derivatives demonstrated high antioxidant activity, some of them inhibit type 1B protein tyrosine phosphatase, activate AMP-activated protein kinase, possess antiplatelet properties, and a rare and very interesting kind of activity, the ability to break cross-links of glycated proteins. The most active compounds can be suggested for further optimization.
Synthesis, in vitro antiplatelet activity and molecular modelling studies of 10-substituted 2-(1-piperazinyl)pyrimido[1,2-a]benzimidazol-4(10H)-ones
Di Braccio, Mario,Grossi, Giancarlo,Signorello, Maria Grazia,Leoncini, Giuliana,Cichero, Elena,Fossa, Paola,Alfei, Silvana,Damonte, Gianluca
, p. 564 - 578 (2013/05/21)
The multistep preparation of the new 10-substituted 2-(1-piperazinyl) pyrimido[1,2-a]benzimidazol-4(10H)-ones 6a-o, and of the two isomers 10-ethyl-2-(diethylamino)pyrimido[1,2-a]benzimidazol-4(10H)-one 6p and 10-ethyl-4-(diethylamino)pyrimido[1,2-a]benzimidazol-2(10H)-one 13, as well as the in vitro evaluation of their inhibitory activity on human platelet aggregation induced in platelet-rich plasma by ADP, collagen or the Ca 2+ ionophore A23187 were here described. Nine out of fifteen 2-(1-piperazinyl)derivatives (6g-o) showed good inhibitory properties towards all the platelet aggregation agonists used. Moreover, a molecular modelling study has been performed on two of the best compounds of this series (6i and 6o) to confirm in silico their interactions with the catalytic site of human platelet PDE3, using the X-ray data of the PDE3B isoform in complex with an inhibitor.
Synthesis and biological evaluation of imidazolo[2,1-b]benzothiazole derivatives, as potential p53 inhibitors
Christodoulou, Michael S.,Colombo, Francesco,Passarella, Daniele,Ieronimo, Gabriella,Zuco, Valentina,De Cesare, Michelandrea,Zunino, Franco
body text, p. 1649 - 1657 (2011/04/21)
Since activation of p53 in response to cytotoxic stress may have proapoptotic or protective effects depending on the nature of the injury, inhibitors of p53 may have therapeutic interest as modulators of chemotherapy toxicity or efficacy. In an attempt to
Lead identification of 2-iminobenzimidazole antagonists of the chemokine receptor CXCR3
Hayes, Martin E.,Breinlinger, Eric C.,Wallace, Grier A.,Grongsaard, Pintipa,Miao, Wenyan,McPherson, Michael J.,Stoffel, Robert H.,Green, David W.,Roth, Gregory P.
, p. 2414 - 2419 (2008/09/20)
Modification of a 2-iminobenzimidazole series derived from an HTS hit resulted in compounds with improved in-vitro species selectivity. Incorporation of an 8-quinoline amide and conformational rigidification of an aliphatic tether furnished potent compounds suitable for further lead optimization.
Synthesis and antitrichinellosis activity of some bis(benzimidazol-2-yl)amines
Mavrova, Anelia Ts.,Denkova, Pavletta,Tsenov, Yordan A.,Anichina, Kameliya K.,Vutchev, Dimitar I.
, p. 6291 - 6297 (2008/04/05)
Novel bis(benzimidazol-2-yl)amines were synthesized using two methods and studied for antitrichinellosis activity. DFT calculations were performed in order to determine the geometry of molecules. All derivatives of 2-aminobenzimidazole exhibited higher activity in vitro against Trichinella spiralis larvae in regard to the activity of albendazole, moreover compounds 4f-i manifested antitrichinellosis effect, which surpassed five times the activity of albendazole. The in vivo screening of intestinal phase of the T. spiralis revealed 100% effectiveness of compounds 4g-i at oral dosages of 50 and 100 mg/kg mw, while albendazole possesses 100% efficacy only at a dose of 100 mg/kg mw.
Synthesis and some conversions of N-substituted benzimidazole-2-sulfonic acids
Divaeva,Kuzmenko,Morkovnik,Komissarov
, p. 463 - 468 (2008/02/02)
A series of N-substituted benzimidazole-2-sulfonic acids was synthesized in good yield by the N-alkylation of benzimidazole-2-sulfonic acids by alkylation with simple and functionalized alkylating agents under mild conditions. The corresponding N-substitu
Synthesis, Antibacterial, and Antifungal Activities of Some New Benzimidazoles
Vlaovic, Djordje,Canadanovic-Brunet, Jasna,Balaz, Jelica,Juranic, Ivan,Djokovic, Dejan,Mackenzie, Kenneth
, p. 199 - 206 (2007/10/02)
1,2-Diaminobenzimidazoles 2 were synthesized by N-amination of 2-aminobenzimidazoles 1 with hydroxylamine-O-sulphonic acid.Substituted 1-alkyl and 1-alkylarylbenzimidazoles 3 were prepared from various benzimidazoles by alkylating with the corresponding a
