title: Two new cyclopentenone derivatives and a new cyclooctadienone derivative from Erigeron annuus (L.) PERS., Erigeron philadelphicus L., and Erigeron sumatrensis RETZ.
abstract: Two new cyclopentenone derivatives, erigerenones A (1) and B (2), and a new cyclooctadienone derivative, erigerenone C (3), were isolated from the aerial parts of Erigeron philadelphicus L. Compound 2 was also isolated from the aerial parts of Erigeron annuus (L.) PERS. and Erigeron sumatrensis RETZ. The structures of 1-3 were elucidated on the basis of their spectral data.
authors.affiliation: Tohoku Pharmaceutical University, Sendai, Miyagi, Japan.
authors.forename: Takeyoshi
authors.initials: T
authors.lastname: Iijima
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Yaoita
authors.forename: Masao
authors.initials: M
authors.lastname: Kikuchi
mesh_terms: D019659:Asteraceae; D003517:Cyclopentanes / Q000032:analysis / Q000737:chemistry* / Q000302:isolation & purification*; D035261:Plant Components, Aerial; D010936:Plant Extracts / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D003517:Cyclopentanes; D010936:Plant Extracts; C013905:cyclopentenone