A convenient synthesis of several tricyclic and bicyclic fluoro- and iodo analogs of cannabinoids has been reported. A new, mild methodology for the synthesis of vinyl fluorides from vinylstannanes has also been demonstrated. These C9 halo-functionalized cannabinoid analogs, along with (-) and (+)-DELTA9-THC carboxylic acids, were screened for anti-inflammatory activity in the mouse ear edema assay. It was interesting Lo find that both enantiomers of DELTA9-THC carboxylic acid were moderately active as anti-inflammatories. The bicyclic vinyl iodide (18C) also showed appreciable anti-inflammatory activity.