title: Three new flavans in dragon's blood from Daemonorops draco.
abstract: Three new flavans were isolated from chloroform extracts of dragon's blood from Daemonorops draco, together with eight known compounds. The structures of the new flavans were determined by 1D and 2D NMR spectroscopic analysis. These compounds are the first examples of 2-methoxyflavans from D. draco and regarded as derivatives of biogenetic intermediates from flavans to chalcones, which are characteristic of the dragon's blood.
authors.affiliation: a Graduate School of Biomedical Sciences, Nagasaki University , 1-14 Bunkyo-Machi, Nagasaki 852-8521 , Japan.
authors.forename: Qian
authors.initials: Q
authors.lastname: Hao
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Saito
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Matsuo
authors.forename: Hai-Zhou
authors.initials: HZ
authors.lastname: Li
authors.forename: Tanaka
authors.initials: T
authors.lastname: Takashi
mesh_terms: D028023:Arecaceae / Q000737:chemistry*; D047188:Chalcones / Q000737:chemistry; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*; D012116:Resins, Plant / Q000737:chemistry*
chemical_list: D047188:Chalcones; D005419:Flavonoids; D010936:Plant Extracts; D012116:Resins, Plant; C525191:dragon's blood
keywords: Arecaceae; Daemonorops draco; dragon's blood; flavan