Chemical diversity in Himalayan Elsholtzia species.
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.
Mathela
Chandra S
CS
Department of Chemistry, Kumaun University, Nainital 263002, Uttarakhand, India. mathelacs@rediffmail.com
Padalia
Rajendra C
RC
Joshi
Subhash C
SC
Singh
Krishna K
KK
Bisht
Dinesh S
DS
Pant
Anil K
AK
Kharkwal
Harendra
H
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
D009822:Oils, Volatile; D010938:Plant Oils; D013729:Terpenes