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A new sesquiterpene lactone from Bombax malabaricum
Mopuru Vijaya Bhaskar Reddy1, Muntha Kesava Reddy, Duvvuru Gunasekar
1Natural Products Division, Department of Chemistry, Sri Venkateswara University, Tirupati, India.
Chemical & Pharmaceutical Bulletin
|April 4, 2003
Abstract:
A new sesquiterpene lactone, 5-isopropyl-3-methyl-2,4,7-trimethoxy-8,1-naphthalene carbolactone (1) together with a known naphthoquinone, 8-formyl-7-hydroxy-5-isopropyl-2-methoxy-3-methyl-1,4-naphthoquinone (2) were isolated from the root bark of Bombax malabaricum. The structures of these two compounds were established by extensive one- and two-dimensional (1D- and 2D)-NMR spectral studies.