title: New constituents of the leaves of Alpinia flabellata.
abstract: Two new compounds were isolated from the leaves of Alpinia flabellata. The structures of these compounds were determined by a combination of NMR techniques and HREIMS as 4-hydroxy-2-(2,4,5-trimethoxyphenyl)-2E-butenal (1) and rel-labd-12-en-15(16)-olid-7-one-8R-spiro-1'-[2S-(2,4,5-trimethoxyphenyl)-3-cyclohexene] (2).
authors.affiliation: Graduate School of Human Life Science, Osaka City University, Sumiyoshi, Osaka 558-8585, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Tesaki
authors.forename: H
authors.initials: H
authors.lastname: Kikuzaki
authors.forename: S
authors.initials: S
authors.lastname: Yonemori
authors.forename: N
authors.initials: N
authors.lastname: Nakatani
mesh_terms: D000447:Aldehydes; D002073:Butanes; D053138:Cyclohexenes; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry; D013057:Spectrum Analysis; D013141:Spiro Compounds / Q000737:chemistry / Q000302:isolation & purification*; D019862:Zingiberales / Q000737:chemistry*
chemical_list: C430170:4-hydroxy-2-(2,4,5-trimethoxyphenyl)-2-butenal; D000447:Aldehydes; D002073:Butanes; D053138:Cyclohexenes; D007783:Lactones; D013141:Spiro Compounds; C430171:rel-labd-12-en-15(16)-olid-7-one-8R-spiro-1'-(2S-(2,4,5-trimethoxyphenyl)-3-cyclohexene)