Essential oil composition of Cladanthus eriolepis (Coss. ex Maire) Oberpr. & Vogt, an endemic species to Morocco

Composition and Chemical Variability of the Essential Oil from Aerial Parts of Cladanthus scariosus, an Endemic Species to the Moroccan High Atlas

“…tr: traces. b RIa lit, RIp lit, literature retention indices [15] otherwise stated; c RI of pure compounds ; d [16] ; e [17] ; f [18] ; g [19] ; h [20] ; i [21]; j [22] ; k [23] ; l [13], m [13,24] ; n [25]. ; o [26] ; p [27].…”

“…[35] The composition of C. scariosus essential oil varied also from that of the essential oil from C. eriolepis, endemic to Morocco, dominated either by camphor (37.0 %); [36] αpinene (13.0 %), isobutyl angelate (10.7 %), 2-methybutyl angelate (9.5 %); [37] iso-butyl isobutyrate (21.2/ 20.8 %), iso-butyl angelate (22.0/22.4 %). [16] The occurrence of chamazulene and dihydroisomers has been already reported in essential oils isolated from various plants such as Tanacetum annuum from Morocco, [14] Artemisia absinthium from Algeria [38] and Artemisia copa from Bolivia. [13] To the best of our knowledge, this is the first time that dihydrochamazulene isomers have been identified in essential oils of Cladanthus genus.…”

“…Indeed, most compositions, recently reviewed [28] were dominated by a major component: santolina alcohol (24.1–55.1 %); [29,30] (E)‐β‐farnesene (35.5–50.5 %); [31,32] 2‐methyl‐2‐E‐butenyl methacrylate (32.0–35.2 %); [31–33] camphor (21.4 %); [31,34] α‐thujone (51.8 %) [35] . The composition of C. scariosus essential oil varied also from that of the essential oil from C. eriolepis , endemic to Morocco, dominated either by camphor (37.0 %); [36] α‐pinene (13.0 %), isobutyl angelate (10.7 %), 2‐methybutyl angelate (9.5 %); [37] iso‐butyl isobutyrate (21.2/20.8 %), iso‐butyl angelate (22.0/22.4 %) [16] …”

Integrated Analysis by GC/MS and 13C NMR of Moroccan Cladanthus mixtus Essential Oil; Identification of Uncommon Epoxyfarnesanes

“…It is noticeable that irregular monoterpene alcohols, santolina alcohol (3.4%) and artemisa alcohol (0.2%), and diterpenes, neophytadiene (0.1%), (Z)-phytol (0.3%), and (E)-phytol (0.2%) were found only in SS sample. Various hemiterpene esters and analogs usually found in Cladanthus species [31] (up to 1.5%) were identified: isobutyl isobutyrate, isobutyl 2-methylbutyrate, isobutyl isovalerate, isopentyl isobutyrate, 2-methylbutyl isobutyrate, isobutyl angelate, 2-methylbutyl 2-methyl butyrate, 3-methylpentyl isobutyrate, and (Z)-2-hexenyl hexanoate. Lastly, it could be pointed out that the content of 3,6,6,9-bisepoxyfarnesa-1,7(14),10-triene (44) and its three epimers (45, 46, and 47) were similar in both oil samples (8.3% vs. 9.7%), while the content of 6,9-epoxy-farnesa-1,7(14),10-trien-3-ol (64) and its epimers (65, 67, and 68) was substantially higher in sample SS than in sample SH (15.3% vs. 5.9%).…”

“…b RIa lit, RIp lit: literature retention indices [19] otherwise stated. c [30]; d [31]; e [32]; f [33]; g [20]; h [34]; i [35]; j [36]; k [37]; l [38]; m [39]; n [40]; o [41]; p [42]; q [43]; r [44]; and s [45]. t RIs of pure compounds from Aldrich (Z/E mixture).…”