Structure-activity relationship on our recently reported triaryl bis-sulfone class of cannabinoid-2 (CB2) receptor selective inverse agonists was explored. Modifications to the methane sulfonamide, substitutions to B and C phenyl rings, and replacements of the C-ring were investigated. A compound with excellent CB2 activity, selectivity for CB2 over CB1, and in vivo plasma levels was identified.
Die Synthese der im Titel genannten Verbindungen (III) durch Kondensation der 8‐Aminopurine (I) mit den Malonsäureestern (II) bzw. durch spezifische 7‐Alky ie‐ rung der Tricyclen (IV) wird beschrieben.