title: Norisoprenoids from Ulva lactuca.
abstract: Five norisoprenoids were isolated from the green marine alga Ulva lactuca. Two new compounds were assigned to (3R,5R,6R,7E)3,5,6-trihydroxy-7-megastigmen-9-one (1) and (3S,5R,6S,7E)3,5,6-trihydroxy-7-megastigmen-9-one (2). The structures and absolute configurations of the five compounds were determined by analyses of NMR, MS and circular dichroism (CD).
authors.affiliation: School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Sun
authors.forename: Y-C
authors.initials: YC
authors.lastname: Zhan
authors.forename: Y
authors.initials: Y
authors.lastname: Sha
authors.forename: Y-H
authors.initials: YH
authors.lastname: Pei
mesh_terms: D002942:Circular Dichroism; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D045792:Norisoprenoids / Q000737:chemistry / Q000302:isolation & purification*; D044445:Ulva / Q000737:chemistry*
chemical_list: D045792:Norisoprenoids