Design and synthesis of novel potent and selective integrin αvβ3 antagonists—Novel synthetic routes to isoquinolinone, benzoxazinone, and quinazolinone acetates
An unexpected ring contraction of benzazepinone based alpha(nu)beta(3) antagonists led to the design of quinolinone-type derivatives. Novel and efficient syntheticroutes to isoquinolinone, benzoxazinone, and quinazolinone acetates were established. Nanomolar alpha(nu)beta(3) antagonists based on these new scaffolds were prepared. Moreover, benzoxazinones 15a and 15b exhibited high microsomal stability