title: Fluorinated retinoic acids and their analogues. 1. Synthesis and Biological activity of (4-methoxy-2,3,6-trimethylphenyl)nonatetraenoic acid analogues.
abstract: (4-Methoyx-2,3,6-trimethylphenyl)nonatetraenoic acids, esters, and amides (analogues of retinoic acid) bearing a fluorine atom(s) or a trifluoromethyl group on the polyene side chain were synthesized. The biological activities of these compounds and of 10-, 12-, and 14-fluororetinoic acid esters were evaluated in vivo in a chemically induced mouse papilloma test; the toxicities were assessed in an in vivo mouse hypervitaminosis A test. Antipapilloma activity greater than the parent nonfluorinated ester was found for 1c (ethyl 12-fluororetinoate) and 23 and 39 (aromatic 4- and 6-fluororetinoid esters, respectively). A similar increase in antipapilloma activity was observed for 71 and 72, the aromatic 4- and 6-fluororetinoic acids, respectively, relative to 2 and for 73 (aromatic 4-fluororetinoid amide) relative to 4.
mesh_terms: D000818:Animals; D051379:Mice; D009374:Neoplasms, Experimental / Q000188:drug therapy; D010212:Papilloma / Q000188:drug therapy; D012878:Skin Neoplasms / Q000188:drug therapy; D013329:Structure-Activity Relationship; D014212:Tretinoin / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000627:therapeutic use / Q000633:toxicity
chemical_list: D014212:Tretinoin