title: Urea derivatives from Pentadiplandra brazzeana.
abstract: Four urea derivatives were isolated from the roots of Pentadiplandra brazzeana, and their structures were elucidated by spectroscopic techniques. N-Benzyl-N'-(4-methoxybenzyl)urea (1) is a new compound, although N,N'-di-(4-methoxybenzyl)urea (2), N,N'-dibenzylurea (3), and p-methoxythiobenzaldehyde (4) are reported from a natural source for the first time.
authors.affiliation: Department of Chemistry, University of Dschang, Box 67, Dschang, Cameroon.
authors.forename: A
authors.initials: A
authors.lastname: Tsopmo
authors.forename: D
authors.initials: D
authors.lastname: Ngnokam
authors.forename: D
authors.initials: D
authors.lastname: Ngamga
authors.forename: J F
authors.initials: JF
authors.lastname: Ayafor
authors.forename: O
authors.initials: O
authors.lastname: Sterner
mesh_terms: D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D013057:Spectrum Analysis; D014508:Urea / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D014508:Urea