title: Alkaloids from Haplophyllum tuberculatum.
abstract: Two new alkaloids, haplotubinone (3) and haplotubine (4), were isolated from the aerial parts of Haplophyllum tuberculatum together with the known lignan diphyllin. The structures of the new alkaloids were established by spectroscopic methods in conjunction with X-ray crystallographic analysis of 3. In addition, the amide N-(2-phenylethyl)-benzamide has been identified in this source for the first time.
authors.affiliation: Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia. ajalreha@ksu.edu.sa
authors.forename: A J
authors.initials: AJ
authors.lastname: Al-Rehaily
authors.forename: T A
authors.initials: TA
authors.lastname: Al-Howiriny
authors.forename: M S
authors.initials: MS
authors.lastname: Ahmad
authors.forename: M A
authors.initials: MA
authors.lastname: Al-Yahya
authors.forename: F S
authors.initials: FS
authors.lastname: El-Feraly
authors.forename: C D
authors.initials: CD
authors.lastname: Hufford
authors.forename: A T
authors.initials: AT
authors.lastname: McPhail
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification*; D001549:Benzamides / Q000737:chemistry / Q000302:isolation & purification; D001685:Biological Factors / Q000737:chemistry / Q000302:isolation & purification; D018360:Crystallography, X-Ray; D010936:Plant Extracts / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012529:Saudi Arabia
chemical_list: D000470:Alkaloids; D001549:Benzamides; D001685:Biological Factors; D010936:Plant Extracts; C037689:benzamide