1-Substituted-5-[(3,5-dinitrobenzyl)sulfanyl]-1H-tetrazoles and their isosteric analogs: A new class of selective antitubercular agents active against drug-susceptible and multidrug-resistant mycobacteria
In this work, a newclass of highly potent antituberculosis agents, 1-substituted-5-[(3,5-dinitrobenzyl)sulfanyl]-1H-tetrazoles and their oxa and selanyl analogs, is described. The minimal inhibitory concentration (MIC) values reached 1 μM (0.36–0.44 μg/mL) against Mycobacterium tuberculosis CNCTC My 331/88 and 0.25–1 μM against six multidrug-resistant clinically isolated strains of M. tuberculosis
Regioselective one-pot three component synthesis of chiral 2-iminoselenazolines under sonication
作者:Wong-Jin Chang、Manohar V. Kulkarni、Chung-Ming Sun
DOI:10.1039/c5ra18763j
日期:——
A one-pot multi component reaction of selenoureas, which are in situ generated from l-amino esters and isoselenocyanates, with α-bromoketone under ultrasonication.
一锅多组分反应,利用从l-氨基酯和异硒氰酸酯生成的硒脲类化合物,在超声波作用下与α-溴酮发生反应。
Room-Temperature Metal-Free Multicomponent Polymerizations of Elemental Selenium toward Stable Alicyclic Poly(oxaselenolane)s with High Refractive Index
selenium-involving covalent bonds. In this work, room-temperature metal-free multicomponentpolymerizations (MCPs) of elemental selenium, diisocyanides, and dipropargyl alcohols were developed, and polymers with a selenium-containing aliphatic heterocycle, 1,3-oxaselenolane, were synthesized through these MCPs directly fromelemental selenium. The alicyclic poly(oxaselenolane)s enjoyed high yields (up to
“On Water”: Efficient Iron-Catalyzed Cycloaddition of Aziridines with Heterocumulenes
作者:Mani Sengoden、Tharmalingam Punniyamurthy
DOI:10.1002/anie.201207746
日期:2013.1.7
In suspension: The reaction of aziridines with heterocumulenes in the presence of Fe(NO3)3⋅9 H2O in aqueous suspension provides access to functionalized five‐membered heterocycles in good to high yields. This protocol has a wide substrate scope, is simple, and uses a nontoxic and cheap catalyst.
with isoselenocyanates directly resulted in the 6-exo-dig mode ring-closure reaction of the adducts to give the (Z)-2-imino-4-methylene-3-selenaquinolines in moderate to good yields. Based on this convenient, solvent-free, catalyst-free method, several 3-selenaquinoline derivatives (3,1-benzoselenazines) were easily obtained in one pot. Successful application of the microwave-assisted synthesis of these