This article reports the chemical composition of the essential oils obtained by hydrodistillation of male and female H. scabrum fresh leaves. The essential oils, HSMO and HSFO, respectively, were analyzed by GC/MS and GC‐FID. A total of 93 components were detected, accounting for 94.8% and 95.3% of HSMO and HSFO, respectively. The prevalent constituents of HSMO were pinocarvone (13.1%), d‐germacren‐4‐ol (12.6%), 1,8‐cineole (10.8%), α‐pinene (6.4%), and β‐pinene (4.8%), whereas the major components of HSFO were 1,8‐cineole (20.5%), linalool (16.5%), α‐pinene (15.0%), β‐pinene (6.4%), and sabinene (6.3%). The different enantiomeric distribution of β‐pinene, sabinene, limonene, linalool in the two oils, was determined. The non‐volatile esters of p‐coumaric and ferulic acids with borneol (1 and 4), cis‐chrysanthenol (2 and 5), and cis‐pinocarveol (3 and 6) were identified in the leaves after basic hydrolysis and analysis of the NMR spectra of the free acids, and GC/MS spectra of the monoterpene alcohols, respectively. Compounds 2, 3, 5, and 6 have been found in nature for the first time. These findings demonstrated that, from a chemical point of view, male and female individuals of H. scabrum collected in Ecuador seem quite differentiated between each other and from samples of the same species growing in Bolivia and in Peru.
Chemistry & Biodiversity – Wiley
Published: Jan 1, 2018
Keywords: ; ; ; ; ;
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