Total synthesis of actinomycin D(C<sub>1</sub>)<i>via</i>a ring-opening reaction of aziridine
作者:K. Okawa、K. Nakajima、T. Tanaka
DOI:10.1002/jhet.5570170840
日期:1980.12
Actinomycin D(C1) has been synthesized by a route involving the ester formation between two peptide fragments, (2S,3S)-1-(2-nitro-3-benzyloxy-4-methylbenzoyl)-3-methyl-2-aziridine-carbonyl-D-valylproline t-butyl ester and N-benzyloxycarbonylsarcosyl-N-methylvaline, via a ring-opening reaction of aziridine. Cyclization, followed by reduction and oxidation, gave actinomycin D(C1). The synthetic actinomycin
Studies on 2-Aziridinecarboxylic Acid. VIII. Total Synthesis of Actinomycin D and Its Serine Analogue<i>via</i>Ring-opening Reaction of 1-Benzyloxycarbonyl-2-aziridinecarboxylic Acid Moiety
Direct synthesis of peptides containing 1-benzyloxycarbonyl-2-aziridinecarboxylic acid were carried out by the reaction of β-hydroxy-α-amino acid peptides with DEAD–TPP reagents, and key O-peptide intermediates of actinomycin D synthesis were prepared via a ring-opening reaction of the aziridine with N-protected dipeptide. Peptide lactone was prepared by the DCC–HOBt method, and the subsequent debenzyl procedure and oxydation procedure gave the title compounds in good yields.