139272-66-5Relevant articles and documents
Preparation method of carboxylic ester compound
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Paragraph 0035-0036, (2021/03/30)
The invention relates to a preparation method of a carboxylic ester compound, which comprises the following steps: reacting carboxylic acid with methanol in air under the catalysis of nitrite to obtain an ester compound, the preparation method disclosed by the invention has the advantages of rich raw material sources, cheap and easily available catalyst, mild reaction conditions, simplicity and convenience in operation and the like, a series of fatty carboxylic acids can be modified with high yield, and particularly, the traditional esterification method is generally not suitable for esterification of drug molecules. By utilizing the method, a series of known drug molecules can be modified, so that a shortcut is provided for discovering new drug molecules.
Synthesis and evaluation of anti-inflammatory and analgesic activity of 3-[(5-substituted-1,3,4-oxadiazol-2-yl-thio)acetyl]-2H-chromen-2-ones
Ingale, Nista,Maddi, Veeresh,Palkar, Mahesh,Ronad, Pradeepkumar,Mamledesai, Shivalingrao,Vishwanathswamy,Satyanarayana, Darbhamulla
experimental part, p. 16 - 36 (2012/06/04)
A novel series of 3-[(5-substituted-1,3,4-oxadiazol- 2-yl-thio)acetyl]-2H- chromen-2-one (7a-i) were synthesized by the condensation between the appropriately substituted 5-substituted-1,3,4-oxadiazolyl-2-thione (4a-i) derived from various existing NSAIDs and 3-(2-bromoacetyl)- 2H-chromen-2-one (6) under reflux in the presence of sodium ethoxide. Structure of the synthesized compounds was established on the basis of physicochemical, elemental analysis, and spectral data. The title compounds were screened for in vivo acute anti-inflammatory and analgesic activities at a dose of 200 mg/kg bw. Among the series, four compounds 7c, 7e, 7f, and 7h were found to possess a significant anti-inflammatory and analgesic activity profile. In addition, these compounds were also found to possess a less degree of ulcerogenic potential as compared to standard NSAIDs. Springer Science+Business Media, LLC 2010.