title: Pyrrolizidine alkaloids of three species of senecio in British Columbia.
abstract: A new alkaloid, 9- O-acetyl-7- O-angelyl-retronecine, was isolated from Senecio triangularis together with 7-O-angelyl-, 9-O-angelyl-, and 7-O-angelyl-9-O-sarracinylretronecine; S. pseudaureus and S. streptanthifolios yielded only retrorsine and senecionine.
authors.affiliation: Range Research Station, Agriculture and Agri-Food Canada, 3015 Ord Road, Kamloops, BC, Canada V2B 8A9.
authors.forename: Y
authors.initials: Y
authors.lastname: Bai
authors.forename: M
authors.initials: M
authors.lastname: Benn
authors.forename: W
authors.initials: W
authors.lastname: Majak