title: N-Didemethyl-n-propionyl-6,9;9, 12-erythromycin A-spiroketal, a new metabolite of erythromycin ethyl succinate in man.
abstract: A novel, neutral metabolite of erythromycin was isolated from the urine of a patient treated with erythromycin ethyl succinate. After separation and purification on Sephadex LH-20 column chromatography, the structure of the metabolite was deduced from spectral data to be the propionamide of the didemethylated 6,9;9, 12-spiroketal of erythromycin A.
mesh_terms: D000368:Aged; D001711:Biotransformation; D002855:Chromatography, Thin Layer; D004917:Erythromycin / Q000031:analogs & derivatives* / Q000378:metabolism / Q000652:urine; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008297:Male; D013058:Mass Spectrometry; D013055:Spectrophotometry, Infrared
chemical_list: D004917:Erythromycin