4-Dihydroxyborylphenyl Analogues of 1-Aminocyclobutanecarboxylic Acids: Potential Boron Neutron Capture Therapy Agents
作者:Rajiv R. Srivastava、Robert R. Singhaus、George W. Kabalka
DOI:10.1021/jo990878c
日期:1999.11.1
A series of 4-dihydroxyborylphenyl analogues of an unnatural alpha-amino acid, 1-aminocyclobutanecarboxylic acid (ACBC), was synthesized. Varying numbers of methylene units were introduced between the 4-boronophenyl and ACBC moieties in order to introduce different degrees of lipophilicity into the molecules. The key step in the syntheses was the preparation of the precursor p-boronophenyl-substituted cyclobutanones which were subsequently converted to the desired amino acids via the Bucherer-Strecker reaction.