Constituents of Limonia acidissima. Applications of Two-dimensional NMR Spectroscopy in Structure Elucidation

Department of Chemistry, University College of Science, Calcutta-700 009

Manuscript  received 19 November 1987, accepted 27 January 1988

The leaves and stems of Limonia acidissima afforded coumarins (luvangetin, xanthotoxin and marmesin), triterpenoids (lupeol and limonin) and steroids (sitosterol O-\(\beta\)-D glucoside). These compounds have been characterised by their spectral (uv, ir. ¹H- and ¹²C-nmr, mass) characteristics. Detailed proton and carbon 13 spectral analyses of limonin have been made using two-dimensional nmr spectroscopy.