title: Chemical diversity in Himalayan Elsholtzia species.
abstract: The terpenoid composition of essential oils from the leaves of five Elsholtzia species, viz., E. eriostachya Benth., E. cristata Willd., E. polystachya Benth., E. flava Benth., and E. pilosa Benth., collected from the Himalayan region (India), was examined by GC, GC/MS, and NMR analyses. Comparison of the results with previous reports revealed new chemotypes. Cluster analysis was carried out in order to discern the similarities and differences within the essential-oil compositions at their subspecies/chemotype level. Based on the major constituents of the essential oils, six chemical groups were obtained.
authors.affiliation: Department of Chemistry, Kumaun University, Nainital 263002, Uttarakhand, India. mathelacs@rediffmail.com
authors.forename: Chandra S
authors.initials: CS
authors.lastname: Mathela
authors.forename: Rajendra C
authors.initials: RC
authors.lastname: Padalia
authors.forename: Subhash C
authors.initials: SC
authors.lastname: Joshi
authors.forename: Krishna K
authors.initials: KK
authors.lastname: Singh
authors.forename: Dinesh S
authors.initials: DS
authors.lastname: Bisht
authors.forename: Anil K
authors.initials: AK
authors.lastname: Pant
authors.forename: Harendra
authors.initials: H
authors.lastname: Kharkwal
mesh_terms: D002849:Chromatography, Gas; D016000:Cluster Analysis; D008401:Gas Chromatography-Mass Spectrometry; D019686:Lamiaceae / Q000737:chemistry* / Q000145:classification; D009682:Magnetic Resonance Spectroscopy; D009822:Oils, Volatile / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry; D013729:Terpenes / Q000737:chemistry
chemical_list: D009822:Oils, Volatile; D010938:Plant Oils; D013729:Terpenes