title: A chlorinated monoterpene ketone, acylated beta-sitosterol glycosides and a flavanone glycoside from Mentha longifolia (Lamiaceae).
abstract: Mentha longifolia (Lamiaceae), an aromatic herb yielded a new halogenated chloro-derivative of menthone (longifone), two new derivatives of beta-sitosterol glycoside (longiside-A and -B) and a new flavanone-glycoside (longitin). The beta-sitosterol and flavanone glycosides were purified as their acetate derivatives. Structures of all the isolated constituents were elucidated with the aid of HMBC techniques. However, the structure of longifone was also determined through X-ray crystallography.
authors.affiliation: H.E.J. Research Institute of Chemistry, University of Karachi, -75270, Karachi, Pakistan. shaiq303@super.net.pk
authors.forename: Muhammad
authors.initials: M
authors.lastname: Shaiq Ali
authors.forename: Muhammad
authors.initials: M
authors.lastname: Saleem
authors.forename: Waqar
authors.initials: W
authors.lastname: Ahmad
authors.forename: Masood
authors.initials: M
authors.lastname: Parvez
authors.forename: Raghav
authors.initials: R
authors.lastname: Yamdagni
mesh_terms: D000215:Acylation; D002713:Chlorine / Q000737:chemistry; D018360:Crystallography, X-Ray; D044950:Flavanones; D005419:Flavonoids / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D019686:Lamiaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008610:Menthol; D008968:Molecular Conformation; D012855:Sitosterols / Q000737:chemistry; D013057:Spectrum Analysis; D013729:Terpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D044950:Flavanones; D005419:Flavonoids; D006027:Glycosides; D012855:Sitosterols; D013729:Terpenes; D008610:Menthol; D002713:Chlorine; C025473:gamma-sitosterol; C019466:menthone; C028610:flavanone