1345997-22-9

Upstream product

• 1304787-72-1 5-(4-chloro-3-nitrophenyl)-1,3,4-oxadiazole-2-thiol 
• 14719-83-6 methyl 3-nitro-4-chlorobenzoate 
• 96-99-1 4-chloro-3-nitrobenzoate 
• 77938-04-6 4-chloro-3-nitro-benzoic acid hydrazide 

Relevant academic research and scientific papers

Synthesis, characterization and evaluation of some 5-substituted 1,3,4-oxadiazole-2-thioesters as antifungal agents

A series of 5-substituted 1,3,4-oxadiazole-2-thioesters was synthesized by converting several substituted organic acids successively into the corresponding esters, hydrazides and 5-substituted 1,3,4-oxadiazole-2-thiols. Finally the target compounds: 5-substituted 1,3,4-oxadiazole-2-thioesters were obtained by refluxing 5-substituted 1,3,4-oxadiazole-2-thiols in the presence of acid chloride and potassium hydroxide. The structures of the synthesized compounds were established by physicochemical and spectroscopic methods. The synthesized compounds were evaluated for their in vitro antifungal activity. Some of the evaluated compounds possessed significant antifungal activity as compared to a terbinafine standard.

Synthesis, characterization and antifungal activity of some 5-substituted 4-amino-1,2,4-triazole-3-thiols

A series of 5-substituted 4-amino-1,2,4-triazole-3-thiols (4a-i) was synthesized by refluxing substituted organic acids (a-i) with methanol to the corresponding esters (1a-i). These esters were then converted to hydrazides (2a-i) by reaction with hydrazine hydrate in the presence of absolute ethanol. The hydrazides were then converted to 5-substituted 1,3,4-oxadiazole-2-thiols (3a-i) by cyclization reaction with carbon disulfide and KOH which was followed by reaction with hydrazine hydrate in the presence of absolute ethanol. Structure of the synthesized compounds was established by physico-chemical and spectral data analysis. Synthesized compounds were subjected to antifungal activity. Antifungal activity analysis was performed against Aspergillus flavus, Mucor species, Aspergillus niger and Aspergillus fumigates, with test compounds at a concentration of 200 μg/mL. Terbinafine was used as the standard drug.