Total synthesis, enzyme-substrate interactions and herbicidal activity of plumbemicin A and B (N-1409)
作者:Ivan A. Natchev
DOI:10.1016/s0040-4020(01)85930-5
日期:1988.1
no-D-norvaline, D4, and the cyclic analogue 14 have been synthesized by four- and three-component condensation of the aldehydes 3 and 10, respectively. Strict selectivity has been observed in the enzyme-substrate interactions with the enzymes phosphodiesterase I, alkaline phosphatase, α-chymotrypsin, urease, and alkaline mesintericopeptidase. The tripeptideantibiotics Plumbemicin A, 21, and B, 25
Organophosphorus Analogues and Derivatives of the Natural L-Amino Carboxylic Acids and Pep tides. IV. A Phospha<sup>C</sup>-Peptide Analogue of Plumbemycin A
作者:Ivan A. Natchev
DOI:10.1246/bcsj.61.4447
日期:1988.12
A condensation of 1,2-azaphosphorine 1 and the dipeptide 2 to the entirely protected phosphaC-tripeptide 3 was carried out by the DCC method. A high selectivity was achieved in the enzyme-catalyzed hydrolysis of the ethoxycarbonyl groups with alkaline mesintericopeptidase to 4 and of the peptide bond Ala–Asp with α-chymotrypsin to 5, which in acid-catalyzed hydrolysis releases the norvaline 6. Antitumor activity of the phosphaC-peptides 4 and 5 was found.