title: Cyclic ureas, III: On the metabolism of the enantiomers of cyclic ureas in rats.
abstract: Studies are described on the metabolism of the enantiomers of 1, 2, and 3 in rats. The metabolites were identified in urine after cleavage of conjugates and extraction using gas chromatography-mass spectrometry. Qualitative enantioselective differences of the metabolism of 1, 2, and 3 could not be detected. Because oxidation of 1 and 2 to the corresponding barbiturates could not be found and 3 was oxidized to mephenytoin only in minor amounts, this pathway is not a prerequisite for the sedative-hypnotic effects of 1, 2, and 3.
authors.affiliation: Abt. Toxikologie, Universität des Saarlandes, Homburg/Saar, Germany.
authors.forename: H H
authors.initials: HH
authors.lastname: Maurer
authors.forename: J
authors.initials: J
authors.lastname: Biwersi
authors.forename: J
authors.initials: J
authors.lastname: Knabe
mesh_terms: D000818:Animals; D008401:Gas Chromatography-Mass Spectrometry; D051381:Rats; D013237:Stereoisomerism; D014508:Urea / Q000031:analogs & derivatives / Q000378:metabolism*
chemical_list: D014508:Urea