title: Etodolac (1,8-diethyl-1,3,4,9-tetrahydropyrano[3,4-b]indole-1-acetic acid): a potent antiinflammatory drug. Conformation and absolute configuration of its active enantiomer.
abstract: The active (+) enantiomer of the antiinflammatory agent etodolac (1,8-diethyl-1,3,4,9-tetrahydropyrano[3,4-b]-indole-1-acetic acid) has been assigned an S absolute configuration on the basis of a crystallographic analysis of the (S)-(-)-borneol ester of (-)-etodolac, and the conformation of etodolac has been determined by a crystallographic analysis of (+/-)-etodolac. Analyses of the solid-state conformation, as well as energy-minimized conformations obtained by molecular mechanics calculations, have failed to provide a basis for identifying a probable receptor-site conformation.
mesh_terms: D000085:Acetates; D000893:Anti-Inflammatory Agents; D003461:Crystallography; D017308:Etodolac; D008958:Models, Molecular; D008968:Molecular Conformation; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D014961:X-Ray Diffraction
chemical_list: D000085:Acetates; D000893:Anti-Inflammatory Agents; D017308:Etodolac