The total synthesis of a novel siderophore, acinetoferrin, is described. The key transformation involves the tandem oxidation and acylation of the N-3-amino group of N-1-BOC propane diamine prior to coupling with the external carboxyls of citric acid. A "one-pot-two-step" reaction converted a primary amine (RNH2) into a O-benzoyl hydroxamate (i.e., RN(OOCPh)COR') in good yield (68%). These studies demonstrated the utility of the O-benzoyl protecting group in the synthesis of alpha,beta-unsaturated hydroxamic acids.
The total synthesis of a novel siderophore, acinetoferrin, is described. The key transformation involves the tandem oxidation and acylation of the N-3-amino group of N-1-BOC propane diamine prior to coupling with the external carboxyls of citric acid. A "one-pot-two-step" reaction converted a primary amine (RNH2) into a O-benzoyl hydroxamate (i.e., RN(OOCPh)COR') in good yield (68%). These studies demonstrated the utility of the O-benzoyl protecting group in the synthesis of alpha,beta-unsaturated hydroxamic acids.
An Improved Synthesis of <i>O</i>-Benzoyl Protected Hydroxamates
作者:Queenie Xianghong Wang、Jennifer King、Phanstiel
DOI:10.1021/jo971126q
日期:1997.11.1
Several primary amines (R-NH2) were converted to their corresponding O-benzoyl protected hydroxamates under biphasic conditions. The intermediate (benzoyloxy)amines (R-NHOCOPh) were generated using benzoyl peroxide dissolved in CH2Cl2 and an aqueous carbonate buffer (pH 10.5) at room temperature. Subsequent acylation with R'COCl gave the protected hydroxamates (R'CONROCOPh) in good overall yields (56-89%).
Total Synthesis of Acinetoferrin
作者:Queenie Xianghong Wang、Otto Phanstiel
DOI:10.1021/jo9717144
日期:1998.3.1
The total synthesis of a novel siderophore, acinetoferrin, is described. The key transformation involves the tandem oxidation and acylation of the N-3-amino group of N-1-BOC propane diamine prior to coupling with the external carboxyls of citric acid. A "one-pot-two-step" reaction converted a primary amine (RNH2) into a O-benzoyl hydroxamate (i.e., RN(OOCPh)COR') in good yield (68%). These studies demonstrated the utility of the O-benzoyl protecting group in the synthesis of alpha,beta-unsaturated hydroxamic acids.