FLAVONOIDS FROMLonchocarpus araripensis(Leguminoseae) - ISOLATION, UNEQUIVOCAL ASSIGNMENT OF NMR SIGNALS1H AND13C AND CONFORMATIONAL ANALYSIS | Zendy

Almi F. Lima | Zendy; Daniele Alves Ferreira | Zendy; Francisco José Queiroz Monte | Zendy; Raimundo BrazFilho | Zendy

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FLAVONOIDS FROMLonchocarpus araripensis(Leguminoseae) - ISOLATION, UNEQUIVOCAL ASSIGNMENT OF NMR SIGNALS¹H AND¹³C AND CONFORMATIONAL ANALYSIS

Author(s) -

Almi F. Lima,

Daniele Alves Ferreira,

Francisco José Queiroz Monte,

Raimundo BrazFilho

Publication year - 2014

Publication title -

química nova

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.214

H-Index - 73

eISSN - 1678-7064

pISSN - 0100-4042

DOI - 10.5935/0100-4042.20140109

Subject(s) - chemistry , stereochemistry

In a continuing investigation for potentially bioactive natural products, flavonoids were isolated from Lonchocarpus araripensis (Leguminoseae) and identified as 3-methoxy-6-O-prenyl-6'',6''-dimethylchromene-[7,8,2'',3'']-flavone (1), 3,6-dimethoxy-6'',6''-dimethylchromene-[7,8,2'',3'']-flavone (2) and 3,5,8-trimethoxy-[6,7,2",3"]-furanoflavone (3). This is the first time compound 3 has been described. Compound 2 has been previously isolated from roots while this is the first time 1 is reported in this species. Complete NMR assignments are given for1 ,2 and 3 together with the determination of conformation for 1

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