title: New terpenoids from Stachys parviflora Benth.
abstract: Two new triterpenoidal saponins were isolated from the n-butanolic extract of Stachys parviflora (Lamiaceae). Their structures were elucidated on the basis of spectral data as stachyssaponin A; 3beta, 15alpha, 19alpha, 21beta, 22alpha-pentahydroxyolean-12-ene-28-oic acid 3-O-{alpha-L-rhamnopyranosyl-(1 --> 3)-beta-D-glucopyranoside}-22-O-{alpha-L-arabinofuranosyl-(1 --> 3)-beta-D-glucopyranoside} (1) and stachyssaponin B; 2beta, 3beta, 15alpha, 21beta-tetrahydroxyolean-12-ene-28-oic acid 2-O-[alpha-L-arabinofuranoside]-3, 21-bis-O-[beta-D-glucopyranoside] (2).
authors.affiliation: International Center for Chemical and Biological Sciences, H.E.J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan. vuahmad@cyber.net.pk
authors.forename: Viqar Uddin
authors.initials: VU
authors.lastname: Ahmad
authors.forename: Saima
authors.initials: S
authors.lastname: Arshad
authors.forename: Sadia
authors.initials: S
authors.lastname: Bader
authors.forename: Shazia
authors.initials: S
authors.lastname: Iqbal
authors.forename: Afsar
authors.initials: A
authors.lastname: Khan
authors.forename: Saleha Suleman
authors.initials: SS
authors.lastname: Khan
authors.forename: Javid
authors.initials: J
authors.lastname: Hussain
authors.forename: Rasool Bakhsh
authors.initials: RB
authors.lastname: Tareen
authors.forename: Amir
authors.initials: A
authors.lastname: Ahmed
mesh_terms: D019686:Lamiaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods / Q000592:standards; D008968:Molecular Conformation; D010936:Plant Extracts / Q000737:chemistry; D012015:Reference Standards; D013237:Stereoisomerism; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D010936:Plant Extracts; D013729:Terpenes; C532407:stachyssaponin A; C532408:stachyssaponin B