thiols react smoothly with dialkyl dicyanofumarates in CH2Cl2 at room temperature to give the corresponding disulfides in excellent yields. Aliphatic 1,2-, 1,3-, and 1,4-dithiols afford cyclic disulfides. Analogous reaction courses were observed starting with selenols, and the required diselenides were also formed in nearly quantitative yields. In all of the reactions, dialkyl dicyanosuccinates formed
Evaluation of selenide, diselenide and selenoheterocycle derivatives as carbonic anhydrase I, II, IV, VII and IX inhibitors
作者:Andrea Angeli、Damiano Tanini、Caterina Viglianisi、Lucia Panzella、Antonella Capperucci、Stefano Menichetti、Claudiu T. Supuran
DOI:10.1016/j.bmc.2017.03.013
日期:2017.4
A series of selenides, diselenides and organoselenoheterocycles were evaluated as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors against the human (h) isoforms hCA I, II, IV, VII and IX, involved in a variety of diseases among which glaucoma, retinitis pigmentosa, epilepsy, arthritis and tumors etc. These investigated compounds showed inhibitory action against these isoforms and some of them were selective
Treatment of epoxides with bis(trimethylsilyl)‐selenide under strictly controlled conditions allows to isolate β‐hydroxy selenols which evidence an unexpected stability, taking into account their known propensity to afford diselenides. Also thiiranes and aziridines lead to functionalized selenols bearing a thiol and a N‐Ts‐ or N‐Boc‐protected amino moiety on β‐position. These selenols were stable enough
Tetraselenotungstate 1 has been shown to be a versatile selenating reagent and has been used successfully for the regio- and stereospecific ring opening of aziridines to afford a number of interesting beta-amino diselenides in good yields in a single step under mild reaction conditions without using any Lewis acid. (c) 2006 Elsevier Ltd. All rights reserved.
Aziridines Ring Opening by Silyl Chalcogenides: a Stereoselective Access to Polyfunctionalized Molecules as Precursor of Sulfurated and Selenated Heterocycles
Aziridines react efficiently with bis(trimethyl)silyl-sulfide and -selenide to afford a direct access to -amino thiols and selenols. Synthesis of 2,4-disubstituted 1,3-selenazolidines is obtained through reaction of 1,2-amino selenols with aldehydes.