title: New steroidal alkaloids from the roots of buxus sempervirens
abstract: Phytochemical studies on an EtOH-soluble extract of the roots of Buxus sempervirens of Turkish origin have resulted in the isolation of three new steroidal alkaloids, (+)-semperviraminol (1), (+)-buxamine F (2), and (+)-17-oxocycloprotobuxine (3), along with two known steroidal alkaloids, (+)-buxoxybenzamine (4) and (+)-buxapapillinine (5). The structures of 1-3 were elucidated with the aid of spectroscopic studies. Compounds 4 and 5 exhibited phytotoxic activity against Lemna minor.
authors.affiliation: H.E.J. Research Institute of Chemistry, University of Karachi, Karachi 75270, Pakistan, and Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Ankara, Turkey.
authors.initials: Au
authors.lastname: Atta-ur-Rahman
authors.initials: A
authors.lastname: Ata
authors.initials: S
authors.lastname: Naz
authors.initials: MI
authors.lastname: Choudhary
authors.initials: B
authors.lastname: Sener
authors.initials: S
authors.lastname: Turkoz