DIPEAc promoted one-pot synthesis of dihydropyrido[2,3-<i>d</i>:6,5-<i>d</i>′]dipyrimidinetetraone and pyrimido[4,5-<i>d</i>]pyrimidine derivatives as potent tyrosinase inhibitors and anticancer agents: <i>in vitro</i> screening, molecular docking and ADMET predictions
作者:Manisha R. Bhosle、Lalit D. Khillare、Jyotirling R. Mali、Aniket P. Sarkate、Deepak K. Lokwani、Shailee V. Tiwari
DOI:10.1039/c8nj04622k
日期:——
The present method provides a wide scope and quick access to dihydropyrido[2,3-d:6,5-d′]dipyrimidinetetraone and pyrimido[4,5-d]pyrimidinederivatives in good to excellent isolated yields from a one-pot three-component reaction of aldehydes, barbituric acid and ammonium acetate/urea in DIPEAc at room temperature. Major advantages of the present methodology are: use of green solvent, short reaction
本方法提供了广泛的范围,可快速获得二氢吡啶并[2,3- d:6,5- d ']二嘧啶四酮和嘧啶并[4,5- d ]嘧啶衍生物,从一锅法三中分离得到的产率好至极好。室温下,醛,巴比妥酸和乙酸铵/脲在DIPEAc中进行高组分反应。本方法的主要优点是:使用绿色溶剂,反应时间短,无催化剂,与多种底物相容,易于回收,反应介质可重复使用,以及DIPEAc作为替代溶剂和催化剂。对所有合成的化合物(3a–k)和(4a–g)进行了体外评估抗癌和酪氨酸酶的抑制活性。对MCF-7,HeLa和A-549癌细胞系进行了合成化合物的体外抗癌筛选,并且3f,3h和3i显示出良好的活性。化合物3a,3c,3f和3i对SK-MEL-2显示出良好的体外抗癌活性。还对合成的化合物在非致瘤性MCF-10A细胞株上进行了测试,发现对它们的癌细胞具有选择性。化合物3f的IC 50浓度与对照细胞相比,MCF-7癌细胞系中存在典型的形态
Catalyst-free synthesis of dihydropyridine from barbituric acid in water
An operationally simple, atom-economical, and green procedure has been developed for the synthesis of dihydropyridine derivatives by a simple condensation of barbituric acid, aldehyde, and ammonium acetate in water under catalyst-free conditions. Excellent yields and purity were obtained with only filtration and washing with hot water and ethanol.
SBA-15-SO3H with a high surface area and high acid content was readily synthesized, characterized, and effectively used in the synthesis of some new and known pyrido[2,3-d:6,5-d′]dipyrimidinederivatives by condensation reaction of 6-aminouracil and different aldehydes under solvent-free conditions. The catalyst was reused for 6 runs without significant loss of its activity. Short reaction times, high
具有高表面积和高酸含量的酸性纳米催化剂SBA-15-SO 3 H易于合成,表征并有效地用于合成一些新的和已知的吡啶基[2,3- d:6,5- d '在没有溶剂的条件下,通过6-氨基尿嘧啶与不同醛的缩合反应生成] dipyrimidine衍生物。该催化剂可重复使用6次,而不会显着降低其活性。反应时间短,产物的产率高,无溶剂条件以及使用坚固且可重复使用的催化剂是本方法的优点。
A green synthesis of pyrimido[4,5-<i>b</i>]quinolines and pyrido[2,3-<i>d</i>]pyrimidines <i>via</i> a mechanochemical approach
for the synthesis of pyrimido[4,5-b]quinolines and pyrido[2,3-d]pyrimidines via a multicomponent reaction of 1,3 diketones (dimedone, barbituric acid, and Meldrum's acid), 6-aminouracil and aromatic aldehyde, through mechanochemical synthesis using a ball-mill. This transformation involves a one pot, catalyst-free, and solvent-free pathway to develop the desired products under mild reaction conditions