Cyclic prodrugs of peptides and peptide nucleic acids having improved metabolic stability and cell membrane permeability

摘要

Provided are cyclic prodrugs of biologically active peptides and peptide nucleic acids exhibiting improved cell membrane permeability and enzymatic stability, containing 3-(2'-hydroxy-4',6'-dimethyl phenyl)-3,3-dimethyl propionic acid and its deriveatives and acyloxyalkoxy linkers. Also provided are pharmaceutical compositions containing effective amounts of these cyclic prodrugs in combination with pharmaceutically acceptable carriers, excipients, or diluents.