Microwave-assisted solution phase synthesis of dihydropyrimidine C5 amides and esters
作者:Bimbisar Desai、Doris Dallinger、C. Oliver Kappe
DOI:10.1016/j.tet.2005.12.061
日期:2006.5
Multifunctionalized dihydropyrimidine-5-carboxylic amides and esters are generated in a multistepsequence integrating a variety of enabling and high throughput technologies such as automated or parallel microwave synthesis, the use of polymer-supported reagents, fluorous synthesis and purification strategies, and a continuous flow hydrogenation system. The key dihydropyrimidine-5-carboxylic acid intermediates
Synthesis of N-alkyl (aril)-tetra pyrimidine thiones and investigation of their human carbonic anhydrase I and II inhibitory effects
作者:Afsun Sujayev、Leyla Polat Kose、Emin Garibov、İlhami Gülçin、Vagif Farzaliev、Saleh H. Alwasel、Claudiu T. Supuran
DOI:10.3109/14756366.2015.1113172
日期:2016.11.1
Tetrahydropyrimidine thiones, which are cyclic thiocarbamides derivatives, were synthesised from thiourea, beta-diketones and substituted benzaldehydes. A tautomeric form of these derivatives incorporates the thiol functionality, which is known to interact with metal ions from metalloenzymes active sites, such as the carbonic anhydrases (CAs, EC 4.2.1.1) among others. This is a superfamily of widespread enzymes, which catalyses a crucial biochemical reaction, the reversible hydration of carbon dioxide to bicarbonate and protons (H+). The newly synthesised N-alkyl (aril)-tetrahydropyrimidine thiones were tested for inhibition of the cytosolic human isoforms I and II (hCA I and II). Both isoforms were effectively inhibited by the newly synthesised thiones. K-i values were in the range of 218.5 +/- 23.9-261.0 +/- 41.5 pM for hCA I, and of 181.8 +/- 41.9-273.6 +/- 41.4 pM for hCA II, respectively. This under-investigated class of derivatives may bring interesting insights in the field of non-sulphonamide CA inhibitors.