2-thio or oxo-4-aryl or heterocyclo-1,5(2H)-pyrimidinedicarboxylic acid
申请人:E. R. Squibb & Sons, Inc.
公开号:US05202330A1
公开(公告)日:1993-04-13
Pyrimidine compounds of the formula ##STR1## wherein X is sulfur or oxygen, Y is R.sub.11 or --O--R.sub.1, and R.sub.4 is aryl or heterocyclo are disclosed. These compounds are useful as cardiovascular agents, particularly anti-hypertensive agents, due to their calcium entry blocking vasodilator activity.
2‐benzylidene‐7‐methyl‐3‐oxo‐5‐phenyl‐2,3‐dihydro‐5H‐thiazolo[3,2‐a]pyrimidine‐6‐carboxylic acid methyl esters were synthesized and characterized by spectral, crystallographic, and elemental analysis. The antiinflammatory activity of the compounds was tested by the carrageenan hind paw edema test. It was found that compound 6a having a 2‐methoxyphenyl group at position 5 and a benzylidene group at position 2 was
nifedipine in inhibiting the migration process. In silico studies proved 4h to be the most potent fascin inhibitor in terms of ΔGbind although it was not inhibiting migration. The controversy between the in vitro and in silico results may cancel the theory of the involvement of the fascin inhibition in the migration inhibition. However, the considerable antimigratory effects of some of the synthesized
An Efficient Synthesis of Multi-Substituted 3,4-Dihydropyrimidin-2(1H)-ones/thiones Under Solvent-Free Microwave Irradiation Using Alumina Sulfuric Acid
A new and efficient method for the synthesis of multi-substituted dihydropyrimidinone derivatives or their sulfur analogs has been developed undersolvent-freemicrowaveirradiation conditions in the presence of alumina sulfuric acid (Al2O3-SO3H) as an environmentally friendly heterogeneous recyclablecatalyst, in high yields and short reaction time.
Sulfamicacid supported on magnetic Fe3O4 nanoparticles catalyzed the condensation reaction of aldehydes, 1,3-dicarbonyl compounds, and urea or thiourea in the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones under solvent-free conditions. This method offers several advantages including high yield, short reaction time, ease of separation, and recyclability of the magnetic catalyst.
磁性Fe 3 O 4纳米粒子上负载的氨基磺酸催化在溶剂-溶剂下合成3,4-二氢嘧啶-2(1 H)-酮/硫酮时醛,1,3-二羰基化合物与脲或硫脲的缩合反应。免费条件。该方法具有几个优点,包括高产率,短反应时间,易于分离和磁性催化剂的可回收性。