Unprecedented C-2 arylation of indole with diazonium salts: Syntheses of 2,3-disubstituted indoles and their antimicrobial activity
摘要:
A novel reaction of indole with aryldiazonium salts leading to the formation of 2-aryl-3-(arylazo)indoles was discovered. The products were found to possess potent anti-MRSA and anti-LLVRE activities. The SAR studies indicate that the potentially metabolically labile azo functionality can be replaced with ether oxygen and thioether sulfur atoms without any loss of activity. (C) 2011 Elsevier Ltd. All rights reserved.
Azines derived from substituted phenacyl aryl/cyclohexyl sulfide on treatment with excess phosphorous oxychloride in N,N-dimethylformamide have been found to yield two isomeric pyrazoles in each case. A plausible mechanism has been suggested for the formation of the products. The antimycobacterialactivity of the isomeric compounds has been tested against Mycobacterium tuberculosis (MTB).
A new set of highly substituted pyridine derivatives has been synthesized by a product selective four component reaction of aryl aldehyde, malononitrile and 2-aryl/cyclohexylsulfanyl-1-aryl-1-ethanones in presence of sodiumhydroxide in methyl/ethylalcohol. Among the compounds, 4,6-bis(4-chlorophenyl)-5-[(4-chlorophenyl)sulfanyl]-2-methoxynicotinonitrile (4n) inhibited Mycobacterium tuberculosis (MTB)
Structure–activity relationship of antileishmanials neolignan analogues
作者:Mário Aveniente、Eduardo F. Pinto、Lourivaldo S. Santos、Bartira Rossi-Bergmann、Lauro E.S. Barata
DOI:10.1016/j.bmc.2007.08.016
日期:2007.12
Twenty-two synthetic analogues of neolignans comprising beta-ketoethers and beta-ketosulfides were obtained from condensation reactions among beta-bromoketones and phenols or thiophenols, respectively, in basic solutions, and assayed in vitro for activity against intracellular Leishmania amazonensis and Leishmania donovani amastigotes, the causative agents of cutaneous and visceral leishmaniasis. The highest selective activity was found for compounds with sulfur bridges, whereas beta-ketosulphoxides and beta-ketosulphones had significantly less growth inhibitory activity. Compounds 2-[(4-chlorophenyl)thio]propan-1-one and 1-(3,4-dimethoxy)2-[(4-methylphenyl)thio]propan-1-one were the most potent, inhibiting the growth parasite species by over 90% at microgram/mL, but only compound 1-(3,4-dimethoxy)-2-[(4-methylphenyl)thio]propan-1-one was selectively toxic to the parasites. (C) 2007 Elsevier Ltd. All rights reserved.
Antiproliferative activity of 2,3-disubstituted indoles toward apoptosis-resistant cancers cells
作者:Igor V. Magedov、Florence Lefranc、Liliya V. Frolova、Laetitia Moreno Y. Banuls、Amanda S. Peretti、Snezna Rogelj、Véronique Mathieu、Robert Kiss、Alexander Kornienko
DOI:10.1016/j.bmcl.2013.03.110
日期:2013.6
Many types of cancer, including glioma, melanoma, NSCLC, among others, are resistant to apoptosis induction and poorly responsive to current therapies with propaptotic agents. We describe a series of 2,3-disubstituted indoles, which display cytostatic rather than cytotoxic effects in cancer cells, and serve as a new chemical scaffold to develop anticancer agents capable of combating apoptosis-resistant cancers associated with dismal prognoses. (C) 2013 Elsevier Ltd. All rights reserved.
Menon,N.K.; Nargund,K.S., Indian Journal of Chemistry, 1967, vol. 5, p. 478 - 479