Benzofuran has antifungal activity as the inhibitor of N‐myristoyltransferase. Twenty‐nine novel benzofuran‐semicarbazide hybrids were designed and synthesized by principle of drug combinationatory. On this basis, the benzofuran ring was simplified to a resorcinol structure, and sixteen novel 1,3‐dialkoxybenzene‐semicarbazide hybrids were designed and synthesized. All structures of the target compounds
A series of novel selenochroman-4-one derivatives bearing semicarbazone or nitrogen heterocycle was designed, synthesized, tested antifungal activity and characterized via 1H-NMR, 13C-NMR, and HRMS. The design of the compounds is based on the principle of molecule hybrid and bioisosterism. We aimed at attaching semicarbazones or nitrogen heterocycle to the selenochroman-4-one for enhancing antifungal
A series of 3-substituted-thiochroman-4-one semicarbazone derivatives were designed based on the
bioisosterism and combination principle in drug design. The target compounds were prepared from 3-substitutedthiochroman-
4-one (1) and 4-substituted-semicarbazides( 2), their structures were confirmed by MS and 1H NMR. The
antifungal assay was carried out in vitro by twofold dilution. The result shows that all the compounds are of antifungal
activities against the tested fungi at different levels.
根据药物设计中的生物异构和组合原理,设计了一系列 3-取代-硫杂苯并吡喃-4-酮半咔唑酮衍生物。目标化合物由 3-取代的二氢苯并二氢吡喃-4-酮(1)和 4-取代的半咔唑(2)制备而成,并通过 MS 和 1H NMR 确认了它们的结构。通过两倍稀释法在体外进行了抗真菌试验。结果表明,所有化合物都对受试真菌具有不同程度的抗真菌活性。
Design and synthesis of novel triazole antifungal derivatives by structure-based bioisosterism
The incidence of life-threatening fungal infections is increasing dramatically. In an attempt to develop novel antifungal agents, our previously synthesized phenoxyalkylpiperazine triazole derivatives were used as lead structures for further optimization. By means of structure-based bioisosterism, triazolone was used as a new bioisostere of oxygen atom. This type of bioisosteric replacement can improve the water solubility without loss of hydrogen-bonding interaction with the target enzyme. A series of triazolone-containing triazoles were rationally designed and synthesized. As compared with fluconazole, several compounds showed higher antifungal activity with broader spectrum, suggesting their potential for further evaluations. (C) 2011 Elsevier Masson SAS. All rights reserved.
Synthesis and biological activities of novel artemisinin derivatives as cysteine protease falcipain-2 inhibitors
A series of novel artemisinin derivatives were synthesized from artemisinin and different anilines. All compounds were obtained as β-isomers. The target compounds were evaluated for inhibition activity against Plasmodium falciparum falcipain-2 in vitro, and most of them exhibited potent inhibition in the low micromolar range and proved to be new types of falcipain-2 inhibitors.