Chalcones3a-fwere prepared by reacting thiophene containing pyrazolyl aldehyde (2) with different 2-hydroxy acetophenones 1a-f. The compounds3a-f were transformed into different Pyrazolines 4a-f. The formation of chromene derivatives 5a-f occurred from the cyclization of 3a-f, which were then transformed into pyrazole derivatives 6a-f. Newly synthesized compounds have promising antibacterial activity against S.typhii and S.aureus, while weak activity against B.subtilis and E.coli. Compounds 5d and 6d had significant antifungal action towardsA. niger, while most of the compounds were moderately active towards T.viride. Some of the synthesized compounds showed promising α-amylase inhibitory activity at 1 mg/mL concentration.
通过将含有吡唑基醛(2)的噻吩与不同的2-羟基苯乙酮1a-f反应制备了Chalcones3a-fwere。化合物3a-f转化为不同的吡唑啉4a-f。从3a-f的环化反应中形成了色素衍生物5a-f,然后转化为吡唑衍生物6a-f。新合成的化合物对鼠伤寒沙门氏菌和金黄色葡萄球菌具有良好的抗菌活性,对枯草杆菌和大肠杆菌的活性较弱。化合物5d和6d对黑曲霉具有显著的抗真菌作用,而大多数化合物对绿黄色曲霉的活性中等。一些合成的化合物在1 mg/mL浓度下显示出有希望的α-淀粉酶抑制活性。