Three New Natural Compounds from the Root Bark Essential Oil from Xylopia aethiopica

Abstract

The composition of X. aethiopica root oil is dominated by two dimethylvinylcyclohexene isomers. It differs drastically from the composition of leaf and fruit oils of the same plant. The combination of analytical techniques appeared crucial for a fruitful analysis.

Chemical Variability of Xylopia quintasiiEngl. & Diels Leaf Oil from Côte d'Ivoire

“…-As shown previously, the leaf and root-bark essential oils of the genus Xylopia exhibited chemical compositions often dominated by mono-and sesquiterpene hydrocarbons, including various new compounds whose structural elucidation has been achieved by our group, i.e., 4,4-dimethyl-2-vinylcyclohexene and 3,3-dimethyl-1-vinylcyclohexene in X. aethiopica [18] and furanoguaia-1,4-diene and furanoguaia-1,3-diene in X. rubescens [19]. The presence of furanoguaiadiene isomers was also observed in X. quintasii leaf oil and contributed to the chemical variability within the 36 investigated oil compositions, three groups being differentiated.…”

“…The constituents of the fruit, leaf, stem, and root oils are well-known monoterpenes and sesquiterpenes and more scarcely diterpenes or aromatic compounds [13 -17]. Recently, phytochemical investigations carried out in our research groups allowed the isolation and structure elucidation of new compounds in X. aethiopica root-bark oil (vinylcyclohexene and 5-methoxypatchoulene) and in X. rubescens leaf oil (furanoguaia-1,4-diene and (Z,Z,Z)-heptadeca-8,11,14-trien-2-ol) [18] [19]. The chemical variability of X. aethiopica leaf oil was also investigated, leading to the partition of the samples in two groups differentiated by their content of a-pinene, b-pinene, and germacrene D [20].…”

Combined analysis of Xylopia rubescens Oliv. leaf oil using gas chromatography with flame ionization detection, gas chromatography with mass spectrometry and 13C nuclear magnetic resonance: structure elucidation of new compounds

“…To our knowledge, no phytochemical investigations on X. rubescens have been undertaken to date. In continuation of our ongoing work on the characterization of aromatic and medicinal plants from the Ivory Coast through the chemical composition of their essential oils, the aim of the present work was to investigate the chemical composition of X. rubescens leaf oil. The structures of three new compounds have been elucidated and one component has been reported for the first time as a natural compound.…”

Composition and Chemical Variability of Root Bark oil from Ivoirian Cleistopholis patens

“…Rich. and its structure elucidated [17]. It accounted for 0.2-4.4% in five oil samples, out of nine.…”