Extending the β-Lactamase-Dependent Prodrug Armory: S-Aminosulfeniminocephalosporins as Dual-Release Prodrugs
摘要:
Cephalosporins bearing an S-aminosulfenimine (R'(R")NSN=) side chain at the 7-position are prototypic examples of a novel class of beta-lactamase-dependent prodrug. Enzyme-catalyzed hydrolysis of the p-lactam ring in these structures triggers release of both the 3'-acetoxy group and the side chain sulfur-attached S-amino moiety as R'(R")NH. This reactivity pattern should allow site-specific corelease of two distinct drug components from a cephalosporin, thereby providing a singular enhancement to the capacity of a cephalosporin as a prodrug nucleus; a key advantage of a dual-release prodrug is the potential to establish synergy between the coreleased structures. Areas for exploitation of this new structure type are antibody-directed enzyme prodrug therapy (ADEPT), which is a key emerging anticancer therapy, and the further development of site-specific-release prodrugs to combat the problem of beta-lactamase-based resistance to antibiotics.
Extending the β-Lactamase-Dependent Prodrug Armory: S-Aminosulfeniminocephalosporins as Dual-Release Prodrugs
摘要:
Cephalosporins bearing an S-aminosulfenimine (R'(R")NSN=) side chain at the 7-position are prototypic examples of a novel class of beta-lactamase-dependent prodrug. Enzyme-catalyzed hydrolysis of the p-lactam ring in these structures triggers release of both the 3'-acetoxy group and the side chain sulfur-attached S-amino moiety as R'(R")NH. This reactivity pattern should allow site-specific corelease of two distinct drug components from a cephalosporin, thereby providing a singular enhancement to the capacity of a cephalosporin as a prodrug nucleus; a key advantage of a dual-release prodrug is the potential to establish synergy between the coreleased structures. Areas for exploitation of this new structure type are antibody-directed enzyme prodrug therapy (ADEPT), which is a key emerging anticancer therapy, and the further development of site-specific-release prodrugs to combat the problem of beta-lactamase-based resistance to antibiotics.