A Facile Synthesis of Hydroxamic Acids of<i>N<sup>α</sup></i>-Protected Amino Acids Employing BDMS, a Study of Their Molecular Docking and Their Antibacterial Activities
作者:K. Uma、H. S. Lalithamba、V. Chandramohan、K. Lingaraju
DOI:10.1080/00304948.2019.1579039
日期:2019.3.4
Hydroxamic acids have received much attention as biologically active compounds. Synthetic hydroxamic acids enhance the growth of plant sources and improve the soil quality, act as antibiotics, cell...
New and simple synthesis of acid azides, ureas and carbamates from carboxylic acids: application of peptide coupling agents EDC and HBTU
作者:Vommina V. Sureshbabu、H. S. Lalithamba、N. Narendra、H. P. Hemantha
DOI:10.1039/b920290k
日期:——
Conversion of carboxylic acids into acid azides using peptide coupling agents, EDC and HBTU is described. The procedure is efficient, practical and applicable to a diverse range of carboxylic acids including N-protected amino acids. Using the same reagents, one-pot synthesis of ureas, dipeptidyl urea esters and carbamates from acids has also been achieved.
Rapid synthesis of acid azides via in situ generation of acid chlorides using CPICl as chlorinating agent from the corresponding Nα-protected amino acids is described. Also the conversion of acid azides into ureidopeptides through the Curtius rearrangement under ultrasonication is delineated. The mildness of the protocol renders the acid-sensitive substrates to afford the corresponding amino acid azides