Coumarins and their taxonomic value in the genus Phebalium

A Novel Dimeric Coumarin Analog and Antimycobacterial Constituents from Fatoua pilosa

“…umbelliferone (2) [8], scopoletin (3) [9], phellodenol-A (4) [10], six furanocoumarins, i.e., psoralen (5) [11], bergapten (6) [11], S-(þ)-marmesin (7) [12], (þ)-(S)-rutaretin methyl ether (8) [13], (þ)-(S)-rutaretin (9) [14] [15], 2',3'-dehydromarmesin (10) [16], one pyranocoumarin, i.e., xanthyletin (11) [17], three chalcones, i.e., isobavachalcone (12) [18], kanzonol C (13) [19] [20], (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 (23) [19] [20], one benzenoid, i.e., syringaldehyde (14) [21], one quinone, i.e., a-tocopheryl quinone (15) [22], one triterpenoid, i.e., lupeol (16) [23], two steroids, i.e., a mixture of b-sitosterol (17) and stigmasterol (18) [24], were readily identified by comparison with authentic samples and by comparison with the literature data.…”

New coumarins and anti-inflammatory constituents from Zanthoxylum avicennae

“…The known isolates were readily identified by a comparison of physical and spectroscopic data (UV, IR, 1 H NMR, [a] D , and MS) with corresponding authentic samples or literature values, and this included four coumarins, 5 0 -hydroxyauraptene (6) (Zdero et al, 1986), 7-((2 0 E,5 0 E)-7 0 -hydroxy-3 0 ,7 0 -dimethyl-2 0 ,5 0 -octadienyloxy)coumarin (7) (Quader, El-Turbi, Armstrong, Gray, & Waterman, 1992), schinilenol (8) (Chen et al, 1995), and methylschinilenol (9) (Tsai et al, 2000), two flavonoids, diosmetin (10) (Sahu, Achari, & Banerjee, 1998) and apigenin (11) (Zaabat et al, 2011), two furoquinolines, skimmianine (12) (Couillerot et al, 1994) and c-fagarine (13) (Couillerot et al, 1994), four benzenoids, methyl 4-hydroxybenzoate (14) (Yasuhara, Kasano, & Sakamoto, 1999), methyl (E)-p-hydroxycinnamate (15) (Pirrung, Chen, Rowley, & McPhail, 1993), p-hydroxybenzoic acid (16) (Honma, Kuroiwa, & Hamada, 1975), and benzoic acid (17) (Laurent, Lebrun, Breakman, Dalzoe, & Pasteels, 2001), a 4-quinolone, 1-methyl-2-pentylquinolin-4(1H)-one (18) (Agier, Bury, Aquette, Hocquemiller, & Waterman, 2007), an indole, indole-3-carboxylic acid (19) (Tan et al, 2004), and a monoterpene lactone, loliolide (20) (Kuo, Lo, & Chan, 2002).…”

A new cytotoxic coumarin, 7-[(E)-3′,7′-dimethyl-6′-oxo-2′,7′-octadienyl] oxy Coumarin, from the leaves of Zanthoxylum schinifolium

“…Methylene chloride fraction showed the strongest cytotoxicity against Jurkat T cell lines. A new coumarin, 7-[(E)-3',7'-dimethyl-6'-oxo-2',7'-octadienyl]oxy coumarin (1), together with three known compounds, schinilenol (2) (Chen et al, 1995), schinindiol (3) (Chen et al, 1995) and 7-[(E)-7'-hydroxy-3',7'-dimethylocta-2',5'-dienyloxy]-coumarin (4) (Quader et al, 1992;Chang et al, 1997) were isolated from the methylene chloride fraction of Z. schinifolium by normal and reverse phase column chromatographies. The structures of the known compounds were determined by 1D and 2D NMR analyses and confirmed by comparing the physical and spectroscopic data with those in the literature.…”