Design and synthesis of novel triazole antifungal derivatives by structure-based bioisosterism
摘要:
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.
Spiro compounds of the general formula (I):
wherein Ar1 represents an optionally substituted aryl or heteroaryl;
n represents 0 or 1;
T, U, V and W each represent a nitrogen atom or an optionally substituted methine group, wherein at least two of which represent said methine group;
X represents methine;
Y represents an optionally substituted imino or oxygen atom.
These novel spiro compounds exhibit neuropeptide Y receptor (NPY) antagonistic activities and are useful as agents for the treatment of various diseases related to NPY, for example, cardiovascular disorders, central nervous system disorders, metobolic diseases and the like.
Discovery and Mechanism of Action of Small Molecule Inhibitors of Ceramidases**
作者:Robert D. Healey、Essa M. Saied、Xiaojing Cong、Gergely Karsai、Ludovic Gabellier、Julie Saint‐Paul、Elise Del Nero、Sylvain Jeannot、Marion Drapeau、Simon Fontanel、Damien Maurel、Shibom Basu、Cedric Leyrat、Jérôme Golebiowski、Guillaume Bossis、Cherine Bechara、Thorsten Hornemann、Christoph Arenz、Sebastien Granier
DOI:10.1002/anie.202109967
日期:2022.1.10
Use of synthetic fluorescent ceramide molecules allows the discovery of the first selective drug-like smallmoleculeinhibitors for alkaline ceramidase 3, an intra-membrane enzyme involved in sphingolipid metabolism in health and disease. These inhibitors represent a new paradigm for controlling lipid metabolism with drug-like smallmolecules targeting conformationally dynamic membrane proteins.
2-Aminonicotinaldehyde (1) and 1-(3-nitrophenyl)ethanone (2) react each other in presence of piperidine to form 2-(3-nitrophenyl)-1,8-naphthyridine (3). Compound 3 on reduction with hydrazine hydrate offered 3-(1,8-naphthyridin-2-yl)aniline (4), which on condensation with different arylcarbamates results in formation of 1-[3-(1,8-naphthyridin-2-yl)phenyl]-3-arylurea derivatives (6a-q). The structures of all the compounds are confirmed by IR, NMR and mass spectral data. Further the newly synthesized compounds were evaluated for antimicrobial activity. The results obtained revealed that the tested compounds possess inhibitory effect on the growth of bacterial cells.