Novel Biginelli dihydropyrimidines of biological interest were prepared using p-toluene sulphonic acid as an efficient catalyst. All the thirty-two synthesised dihydropyrimidines were evaluated for their in vitro antioxidant activity using DPPH method. Only, compounds 28 and 29 exhibited reasonably good antioxidant activity. Furthermore, the synthesised Biginelli compounds were subjected for their
A novel iron-catalyzed vinylogous aldol condensation of Biginelli products with aryl aldehydes has been developed for the syntheses of potential bioactive (E)-6-arylvinyl-dihydropyrimidin-2(1H)-ones. These materials are valuable synthetic precursors to drug-like pyrido[4,3-d]pyrimidine derivatives. The amide group at the 5-position of the dihydropyrimidin-2(1H)-ones played an important role in the
已经开发了一种新型的铁催化的比格内利产物与芳基醛基的乙烯基醇醛醇醛缩合反应,用于合成潜在的生物活性(E)-6-芳基乙烯基-二氢嘧啶-2(1 H)-ones。这些材料是药物样吡啶并[4,3- d ]嘧啶衍生物的有价值的合成前体。二氢嘧啶-2(1 H)-的5-位的酰胺基在乙烯基醇醛缩合反应中起重要作用。