title: A novel phenylpropenoyl sulfonic acid and a new chlorophyll from the leaves of Petasites formosanus KITAMURA.
abstract: A novel phenylpropenoyl sulfonic acid, petasiformin-A (1), and a new chlorophyll, petasiphyll-A (2), were isolated from the leaves of Petasites formosanus KITAMURA (Compositae). Their structures were established by spectral and chemical transformation methods. Petasiformin-A (1) showed the significant antioxidative activity in DPPH radical scavenging assay.
authors.affiliation: Department of Chemistry, National Cheng Kung University, Taiwan 701, Taiwan.
authors.forename: Chun-Hua
authors.initials: CH
authors.lastname: Lin
authors.forename: Chia-Ying
authors.initials: CY
authors.lastname: Li
authors.forename: Tian-Shung
authors.initials: TS
authors.lastname: Wu
mesh_terms: D015394:Molecular Structure; D036901:Petasites / Q000737:chemistry*; D010666:Phenylpropionates / Q000737:chemistry* / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry*; D011166:Porphyrins / Q000737:chemistry* / Q000302:isolation & purification; D013451:Sulfonic Acids / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D010666:Phenylpropionates; D011166:Porphyrins; D013451:Sulfonic Acids; C496435:petasiformin-A; C496436:petasiphyll-A