The present description relates to substituted polycyclic compounds and forms and pharmaceutical compositions thereof and methods of using such compounds, forms or compositions thereof for treating or ameliorating Neisseria gonorrhoeae and Neisseria meningiditis. The present description relates to a compound of Formula (I), Formula (II), Formula (III) or Formula (IV): wherein the dashed line "----- " represents an optional double bond and R1, R2, R5, X and Z are as defined herein, and forms and compositions thereof, and also relates to uses of a compound of Formula (I), Formula (II), Formula (III) or Formula (IV) or a form thereof and methods for treating or ameliorating Neisseria gonorrhoeae (N. gonorrhoeae) or Neisseria meningitidis (N. meningitidis) in a subject in need thereof, comprising, administering an effective amount of the compound to the subject.La présente invention concerne des formes et des composés polycycliques substitués et des compositions pharmaceutiques correspondantes, ainsi que des procédés dutilisation de tels composés, formes ou compositions correspondantes pour traiter ou améliorer Neisseria gonorrhoeae et Neisseria meningiditis.