A New Smoothened Antagonist Bearing the Purine Scaffold Shows Antitumour Activity In Vitro and In Vivo. - Zárate AM; Espinosa-Bustos C; Guerrero S; Fierro A; Oyarzún-Ampuero F; Quest AFG; Di Marcotullio L; Loricchio E; Caimano M; Calcaterra A; González-Quiroz M; Aguirre A; et al. (International journal of molecular sciences, 2021)