title: Synthesis and topical antiinflammatory potencies of a series of 6-keto- and delta 6-6-acyloxybetamethasone derivatives.
abstract: 6-keto- and delta 6-6-acyloxybetamethasone esters were synthesized, and tested for topical antiinflammatory potency using a modification of the Tonelli croton ear assay. The introduction of a 6-keto group generally led to retention of topical antiinflammatory potencies when compared to the corresponding 6-desoxycorticoids. In contrast, introduction of the delta 6-6-acyloxy moiety into betamethasone 17,21-dipropionate reduced antiinflammatory potency.
mesh_terms: D000287:Administration, Topical; D000818:Animals; D000893:Anti-Inflammatory Agents / Q000138:chemical synthesis*; D001623:Betamethasone / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology; D055598:Chemical Phenomena; D002621:Chemistry; D003436:Croton Oil; D005938:Glucocorticoids; D007249:Inflammation / Q000139:chemically induced; D051379:Mice
chemical_list: D000893:Anti-Inflammatory Agents; D005938:Glucocorticoids; D003436:Croton Oil; D001623:Betamethasone