Synthesis, Spectroscopic Analysis, and In-Vitro Antimicrobial Evaluation of some Tetrahydrobenzo[a]Xanthene-11-Thiones
摘要:
A series of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-thiones were synthesized by the reaction of substituted 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-ones with Lawesson's Reagent in toluene under standard reaction conditions. All synthesized compounds were characterized by IR, NMR (H-1 and C-13), and mass spectra. Moreover, 2D-NMR (HOMOCOSY, HSQC, and HMBC) studies were also performed for compound 10b. The synthesized compounds were also screened for their antibacterial activities. [Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfer, and Silicon and the Related Elements for the following free supplemental files: Additional figures.]
Green multi-component domino reactions (MCRs)1–7 for the synthesis of fine chemicals have attracted much recent interest.8–9 Quinolines, spiro[4H-pyran-oxindoles] and xanthenes are reported as havi...
Introduction of a new ionic liquid solid acid based on clay as an efficient, recyclable and thermally stable catalyst for organic transformations
作者:Somayyeh Sarvi Beigbaghlou、Katayoun Marjani、Azizollah Habibi、Seyyed Vahid Atghia
DOI:10.1039/c5ra25297k
日期:——
Ammonium hydrogensulfate based ionic liquid immobilized on Na+–montmorillonite (AHS@MMT) was prepared via anchoring ammonium hydrogensulfate propyltriethoxysilane onto sodium montmorillonite by covalent bonds. The synthesized catalyst was full characterized by FT-IR, SEM, TGA and XRD techniques and Hammett acidity test and the catalytic activity of this novel catalyst was evaluated for the synthesis
Cyclodextrin nanosponges: a potential catalyst and catalyst support for synthesis of xanthenes
作者:Samahe Sadjadi、Majid M. Heravi、Mansoureh Daraie
DOI:10.1007/s11164-016-2668-7
日期:2017.2
The nanoporous framework of a cyclodextrin nanosponge was used as catalyst for accelerating the one-pot, three-component reaction of dimedone, aldehyde, and phenols for synthesis of xanthene derivatives. Moreover, the nanocavities of cyclodextrin nanosponges were exploited for immobilization of heteropolyacids through the wet impregnation method. This catalyst exhibited superior catalytic performance
Introduction of a new bi-SO<sub>3</sub>H ionic liquid based on 2,2′-bipyridine as a novel catalyst for the synthesis of various xanthene derivatives
作者:Farhad Shirini、Masoumeh Abedini、Mohaddeseh Seddighi、Omid Goli Jolodar、Mohadeseh Safarpoor、Nikoo Langroodi、Solmaz Zamani
DOI:10.1039/c4ra12361a
日期:——
1′-disulfo-[2,2′-bipyridine]-1,1′-diium chloride, [BiPy](SO3H)2Cl2 as a new ionic liquid, is prepared, characterized and used as an efficient catalyst for the promotion of the synthesis of various symmetric and asymmetric xanthene derivatives under solvent free conditions. All products were formed in excellent yields over short reaction times. Easy preparation of the catalyst, simple and easy work-up, mild
Xanthenones: calixarenes-catalyzed syntheses, anticancer activity and QSAR studies
作者:Daniel Leite da Silva、Bruna Silva Terra、Mateus Ribeiro Lage、Ana Lúcia Tasca Góis Ruiz、Cameron Capeletti da Silva、João Ernesto de Carvalho、José Walkimar de Mesquita Carneiro、Felipe Terra Martins、Sergio Antonio Fernades、Ângelo de Fátima
DOI:10.1039/c4ob02611j
日期:——
An efficient method is proposed for obtaining tetrahydrobenzo[a]xanthene-11-ones and tetrahydro-[1,3]-dioxolo[4,5-b]xanthen-9-ones. The method is based on the use of p-sulfonic acid calix[n]arenes as catalystsundersolvent-freeconditions. The antiproliferative activity of fifty-nine xanthenones against six human cancer cells was studied. The capacity of all compounds to inhibit cancer cell growth