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J. W. Bright and E. C. M. Chen, “Mass Spectra Interpretation Using the ‘Rule of 13’,” Journal of Che- mical Education, Vol. 60, No. 7, 1983, pp. 557-558. doi:10.1021/ed060p557

has been cited by the following article:

• TITLE: Two Flavones from Acanthospermum hispidum DC and Their Antibacterial Activity

  AUTHORS: Theresa I. Edewor, Abass A. Olajire

  KEYWORDS: Acanthospermum hispidum DC, Flavonoids, Antibacterial, Spectroscopy

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.1 No.3, September 28, 2011

  ABSTRACT: Two new flavones, namely 5,7,2’,5’-tetrahydroxy-3,4’-dimethoxyflavone and 5’-acetoxy-5,7,2’-trihydroxy-3, 4’-dimethoxyflavone were successfuly isolated from the leaves of Acanthospermum hispidum DC and identified by UV-Vis, IR, 1H-NMR and EI-MS techniques. Both compounds exhibited antibacterial activity against Salmonella typii, Staphylococcus aureus, Klebsiella pneumoniae, Proteus mirabilis, Bacillus subtilis, Pseudomonas aeruginosa and Shigella dysenteriae with minimum inhibition concentration (MIC) ranging from 0.001 - 0.20 but was inactive against Escherichia coli, Corybacterium pyogenes and Proteus vulgaris.