Aromatic plants of tropical West Africa. XII. Essential oil of Hoslundia opposita Vahl. growing in Benin and Cameroon

Abstract

The chemical composition of the essential oils obtained from leaves of Hoslundia opposita Vahl., collected in Benin and in Cameroon, were analysed by GC and GC–MS. Both oils are characterized by a high content of sesquiterpene hydrocarbons. In the essential oil from Benin, only two components are present in amounts above 15%: β‐caryophyllene (16.2%) and germacrene D (27.2%). The essential oil from Cameroon was more complex: α‐copaene (12.3%) and δ‐cadinene (10.5%) are as abundant as β‐caryophyllene (10.3%) and germacrene D (15.1%). Copyright © 1999 John Wiley & Sons, Ltd.

Intraspecific Chemical Variability of Essential Oil of <i>Hoslundia</i> <i>opposita</i>

“…While dealing with the volatile compounds, the literature revealed three types of essential oils from Hoslundia opposita. The first chemotypes consisted to sesquiterpene hydrocarbons and rarely diterpene namely germacrene D, β-caryophyllene, α-copaene and phytol [13][14][15][16]. When, the second chemotypes were known to be dominated by the aromatic constituents such as benzyl benzoate, thymol and eugenol [16,17].…”

Pyrone and Unusually Furanone-substituted Flavones from the Leaves of Hoslundia opposita

“…The plant gives edible fruits and is used in traditional medicine. Essential oil from its aerial parts was studied [1,2]. Four abietane-type diterpenes were isolated from its roots [3], and triterpenes from its twigs [4], which also afforded the polymethylated flavones tectochrysin [5] and 5,7-dimethoxy-6-methylflavone [6] as well as unusual flavones substituted in position C-6 by a 2-methyl-pyrone or a 2-methyl-pyrane.…”