title: Novel flavanes from Livistona halongensis.
abstract: A study of the chemical constituents of a methanolic extract of the roots of Livistona halongensis (Arecaceae) led to the isolation of two new flavanes, 2S,3S-3,5,7,3'-tetrahydroxy-5'-methoxyflavane (1) and 3,7,3'-trihydroxy-5'-methoxyflavane 5-O-beta-glucopyranoside (2), together with trans-3,5,3',5'-tetrahydroxy-4-methoxystilbene, saccharose and beta-sitosterol-3-O-beta-glucopyranoside. The structures of these compounds were elucidated on the basis of spectroscopic data.
authors.affiliation: Department of Organic Chemistry, Institute of Chemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, Cau Giay District, Hanoi, Vietnam.
authors.forename: Van Tran
authors.initials: VT
authors.lastname: Loc
authors.forename: Pham Duc
authors.initials: PD
authors.lastname: Thang
authors.forename: Nguyen The
authors.initials: NT
authors.lastname: Anh
authors.forename: Pham Thi
authors.initials: PT
authors.lastname: Ninh
authors.forename: Trinh Thi
authors.initials: TT
authors.lastname: Thuy
authors.forename: Van Tran
authors.initials: VT
authors.lastname: Sung
mesh_terms: D028023:Arecaceae / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry*; D005960:Glucosides / Q000737:chemistry*; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry
chemical_list: C571552:2S,3S-3,5,7,3'-tetrahydroxy-5'-methoxyflavane; C571553:3,7,3'-trihydroxy-5'-methoxyflavane 5-O-beta-glucopyranoside; D005419:Flavonoids; D005960:Glucosides