“…Many studies have focused on the composition of polar solvent extracts and the chemical compounds identified are sorted into three main groups: phenolics, sesquiterpenes, and diterpenes [ 11 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Furthermore, X. spinosum is recognized for its biological and pharmaceutical activities, imputed to the presence of sesquiterpene lactones called xanthanolides [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ]. These lactones, provided with a non-cyclic carbon chain and a seven-membered ring, appear to be responsible for cytotoxic [ 29 , 30 , 31 ], antitumor [ 20 , 31 , 32 , 33 ], antibacterial [ 34 , 35 , 36 , 37 ], anti-fungal [ 38 ], anti-leishmaniosis [ 38 ], anti...…”