With the goal of obtaining a novel bioactive compound with significant antifungal activity, a series of 1,3,4-thiadiazole derivatives (3a–3l) were synthesized and characterized. Due to thione-thiol tautomerism in the intermediate compound 2, type of substitution reaction in the final step was determined by two-dimensional (2D) NMR. In vitro antifungal activity of the synthesized compounds was evaluated against eight Candida species. The active compounds 3k and 3l displayed very notable antifungal effects. The probable mechanisms of action of active compounds were investigated using an ergosterol quantification assay. Docking studies on 14-α-sterol demethylase enzyme were also performed to investigate the inhibition potency of compounds on ergosterol biosynthesis. Theoretical absorption, distribution, metabolism, and excretion (ADME) predictions were calculated to seek their drug likeness of final compounds. The results of the antifungal activity test, ergosterol biosynthesis assay, docking study, and ADME predictions indicated that the synthesized compounds are potential antifungal agents, which inhibit ergosterol biosynthesis probably interacting with the fungal 14-α-sterol demethylase.

Synthesis and Evaluation of New 1,3,4-Thiadiazole Derivatives as Potent Antifungal Agents.

Synthesis and antifungal activity of novel 1,2,4‐triazole derivatives containing an amide moiety

A series of novel 1,2,4-triazole derivatives containing a pyrimidine moiety were synthesized and their fungicidal activities were evaluated. The preliminary biological test indicated that s...

Synthesis and fungicidal activity of novel 1,2,4-triazole derivatives containing a pyrimidine moiety

Several valuable biologically active molecules can be obtained through C-H activation processes. However, the use of expensive and not readily accessible catalysts complicates the process of pharmacological application of these compounds. A plausible way to overcome this issue is developing and using cheaper, more accessible, and equally effective catalysts. First-row transition (3d) metals have shown to be important catalysts in this matter. This review summarizes the use of 3d metal catalysts in C-H activation processes to obtain potentially (or proved) biologically active compounds.

https://www.beilstein-journals.org/bjoc/content/pdf/1860-5397-17-126.pdf

On the application of 3d metals for C-H activation toward bioactive compounds: The key step for the synthesis of silver bullets.

4-Amino-5-mercapto[1,2,4]triazole and its 3-substituted derivatives have proven to be of biological interest and provide access to a new class of biologically active heterocyclic compounds for biomedical applications. This study will be helpful for scientific researchers interested in the chemistry of bifunctional versatile compounds as it provides a collection of all the methods for the preparation of 3-substituted-4-amino-5-mercapto[1,2,4]triazoles with aliphatic, aromatic, and heterocyclic moieties during the period from 2000 to mid-2020.

/pdf/two-decades-of-the-synthesis-of-mono-and-bis-aminomercapto-1-1zn48quful.pdf

Two decades of the synthesis of mono- and bis-aminomercapto[1,2,4]triazoles

With the aim to find new compounds with high antifungal activity, 21 4-amino-5-substituted-1,2,4-triazole Schiff bases (2a - 2g, 3a - 3g, and 4a - 4g) were designed and synthesized. Their antifungal activities against Pythium solani, Gibberlla nicotiancola, Fusarium oxysporium f. sp. niveum, Gibberlla saubinetii, Alternaria iycopersici, Phytophthora capsici, Physalospora piricola, Cercospora arachidicola hori, and Fusarium oxysporium f. sp. cucumber were tested, parts of the compounds exhibited excellent antifungal activity. This research provides useful information for further study of antifungal agents.

Design, Synthesis, and Antifungal Activities of Novel 1,2,4-Triazole Schiff Base Derivatives.

Pyrido[1,2-a]benzimidazoles, which show interesting and potentially useful biological activities, have drawn extensive attention from chemists. A straightforward copper acetate-oxidative one-pot synthesis of these compounds from 2-aminopyridines and phenylboronic acids through C–N bond formation and C–H bond activation was developed as a simple and convenient method.

Copper Acetate Aerobic Oxidative Synthesis of Pyrido[1,2-a]benzimidazoles from Aminopyridines and Phenylboronic Acids

Temperature-controlled two new Co(II) compounds with distinct topological networks: Syntheses, crystal structures and catalytic properties

Abstract C21H22N2O3, orthorhombic, Pbcn (no. 60), a = 15.093(2) Å, b = 13.896(2) Å, c = 17.501(2) Å, V = 3670.5(8) Å3, Z = 8, Rgt(F) = 0.0446, wRref(F2) = 0.1208, T = 293(2) K.

Crystal structure of methyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C21H22N2O3

Two rutaecarpine (RUT) derivatives, substituted with methoxy groups, namely, 2-methoxyl rutaecarpine (RUT-OCH3, 3a), and 2,10-dimethoxy rutaecarpine (RUT-(OCH3)2, 3b), were synthesized and characte...

https://journals.sagepub.com/doi/pdf/10.1177/1934578X21991686

Jingli Liu

Papers

Design, Synthesis, and Antifungal Activities of Novel 1,2,4-Triazole Schiff Base Derivatives.

Copper Acetate Aerobic Oxidative Synthesis of Pyrido[1,2-a]benzimidazoles from Aminopyridines and Phenylboronic Acids

Temperature-controlled two new Co(II) compounds with distinct topological networks: Syntheses, crystal structures and catalytic properties

Crystal structure of methyl 4-(3-cyanophenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C21H22N2O3

Synthesis, Antitumor Activity, Oil-Water Partition Coefficient, and Theoretical Calculation of 2 New Rutaecarpine Derivatives With Methoxy Groups: