“…Bioassay-guided fractionation of the AcOEt-soluble fraction of the whole plant of F. pilosa has led to the isolation of one novel coumarin derivative, fatouapilosin (1), along with 18 known compounds, 2 -19, including three simple coumarins, i.e., umbelliferone (2), scopoletin (3), and phellodenol-A (4); six furanocoumarins, i.e., psoralen (5), bergapten (6), (þ)-(S)-marmesin (7), (þ)-(S)-rutaretin methyl ether (8), (þ)-(S)-rutaretin (9), and 2',3'-dehydromarmesin (10); one pyranocoumarin, i.e., xanthyletin (11); three chalcones, i.e., isobavachalcone (12), kanzonol C (13), and (E)-1-[2,4-dihydroxy-3-(3-methylbut-2-enyl)phenyl]-3-(2,2-dimethyl-8-hydroxy-2H-benzopyran-6-yl)prop-2-en-1-one (14); one benzenoid, i.e., syringaldehyde (15); one quinone, i.e., a-tocopheryl quinone (16); one triterpenoid, i.e., lupeol (17); and two steroids, i.e., a mixture of b-sitosterol (18) and stigmasterol (19). The structure elucidation of 1 and the antimycobacterial activities of the isolates are described herein.…”