中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 4-(4-Fluoro-phenyl)-6-methyl-2-thioxo-1,2,3,4-tetrahydro-pyrimidine-5-carboxylic | 854019-29-7 | C14H15FN2O2S | 294.35 |
—— | ethyl (4S)-4-(4-fluorophenyl)-6-methyl-2-sulfanylidene-3,4-dihydro-1H-pyrimidine-5-carboxylate | 854019-30-0 | C14H15FN2O2S | 294.35 |
—— | 4-(4-fluoro-phenyl)-6-methyl-2-pentylsulfanyl-1, 4-dihydro-pyrimidine-5-carboxylic acid ethyl ester | 1104612-53-4 | C19H25FN2O2S | 364.484 |
—— | 4-(4-fluoro-phenyl)-6-methyl-2-tetradecylsulfanyl-1,4-dihydro-pyrimidine-5-carboxylic acid ethyl ester | 1104612-55-6 | C28H43FN2O2S | 490.726 |
—— | ethyl 4-(4-fluorophenyl)-6-methyl-2-(((5-(p-tolyl)-1,3,4-oxadiazol-2-yl)methyl)thio)-1,4-dihydropyrimidine-5-carboxylate | —— | C24H23FN4O3S | 466.536 |
—— | ethyl 5-(4-fluorophenyl)-7-methyl-3-oxo-2,3-dihydro-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate | 254433-11-9 | C16H15FN2O3S | 334.371 |
—— | ethyl 6-(4-fluorophenyl)-8-methyl-4-oxo-2,3,4,6-tetrahydropyrimido[2,1-b][1,3]thiazine-7-carboxylate | 254433-14-2 | C17H17FN2O3S | 348.398 |
An efficient desulfurization C–O coupling reaction of 3,4-dihydropyrimidine-2(1H)-thiones (including thioureas) with alcohols was developed under electrochemical oxidation conditions. Herein, transition-metal catalysts and additives are not required and the alcohol is both the solvent and the alkoxy donor.
A library of dihydropyrimidinones was synthesized via a “one-pot” three component Biginelli reaction using different aldehydes in combination with β-dicarbonyl compounds and urea. Selected 2-thiooxo and 2-imino analogs were also obtained with the Biginelli reaction from thiourea and guanidine hydrochloride, respectively. The products were screened in vitro for their β-secretase inhibitory activity. The majority of the compounds resulted to be active, with IC50 in the range 100 nM–50 μM.