Demethyl(trifluoromethyl)actinomycins, II. Bis(trifluoromethylated) 4-(2′-Benzoxazolyl)actinocin Derivatives
作者:Isabel Bahner、Helmut Lackner
DOI:10.1002/jlac.199719970531
日期:1997.5
In a previous study, performed in connection with the totalsynthesis of trifluoromethylated actinocinyl peptides 2a, the oxidative condensation of the corresponding o-aminophenol precursor 1 furnished a novel trimerisation product, which had been tentatively assigned to the triphenedioxazine structure 3[1]. Now, an improved synthesis of the trimer and extensive 1- and 2D-NMR studies have resulted