Novel Communication: Some Novel Organosulfur Amino Acid Derivatives as Potential Antiparasitic Agents
摘要:
The chalones 1, 14, and 26 reacted with chlorosulfonic acid to give corresponding sulfonyl chlorides 2, 15, and 27, which condensed with nucleophiles to give amino acid derivatives 3-6, 16-18, and 28-31. Some of the corresponding methyl esters 7, 8, 19-20, and 32-34 were prepared. Hydrazinolysis of these methyl esters yielded hydrazides 9, 10, 21, 22, and 35-36. Coupling reaction of some amino acid derivatives with amino acid methyl ester hydrochloride in THF-Et3N using dicyclohexylcarbodiimide method furnished the desired dipeptide methyl ester's 11-13, 23-25, and 37-38. Some spectroscopic evidence including NMR spectra analysis are briefly discussed.
Novel Communication: Some Novel Organosulfur Amino Acid Derivatives as Potential Antiparasitic Agents
摘要:
The chalones 1, 14, and 26 reacted with chlorosulfonic acid to give corresponding sulfonyl chlorides 2, 15, and 27, which condensed with nucleophiles to give amino acid derivatives 3-6, 16-18, and 28-31. Some of the corresponding methyl esters 7, 8, 19-20, and 32-34 were prepared. Hydrazinolysis of these methyl esters yielded hydrazides 9, 10, 21, 22, and 35-36. Coupling reaction of some amino acid derivatives with amino acid methyl ester hydrochloride in THF-Et3N using dicyclohexylcarbodiimide method furnished the desired dipeptide methyl ester's 11-13, 23-25, and 37-38. Some spectroscopic evidence including NMR spectra analysis are briefly discussed.
Novel Communication: Some Novel Organosulfur Amino Acid Derivatives as Potential Antiparasitic Agents
作者:Ragab A. El-Sayed
DOI:10.1080/10426500601142221
日期:2007.3.15
The chalones 1, 14, and 26 reacted with chlorosulfonic acid to give corresponding sulfonyl chlorides 2, 15, and 27, which condensed with nucleophiles to give amino acid derivatives 3-6, 16-18, and 28-31. Some of the corresponding methyl esters 7, 8, 19-20, and 32-34 were prepared. Hydrazinolysis of these methyl esters yielded hydrazides 9, 10, 21, 22, and 35-36. Coupling reaction of some amino acid derivatives with amino acid methyl ester hydrochloride in THF-Et3N using dicyclohexylcarbodiimide method furnished the desired dipeptide methyl ester's 11-13, 23-25, and 37-38. Some spectroscopic evidence including NMR spectra analysis are briefly discussed.