Phenolic compounds from the twigs and leaves of Tara (Caesalpinia spinosa)

J Asian Nat Prod Res. 2016;18(4):334-8. doi: 10.1080/10286020.2015.1096269. Epub 2015 Dec 14.

Abstract

Two new homoisoflavans, 4'-hydroxy-7-methoxy-3-benzyl-2H-chromene (1) and 3,4-cis-di-O-3-hydroxy-7-methoxy-3-(4-hydroxybenzyl)-4-ethoxychroman (2), one new coumarin, 7-methoxy-3-(4-hydroxybenzyl)coumarin (4), together with seven known phenolic compounds, bonducellin (3), anemarcoumarin A (5), (+)-syringaresinol (6), curuilignan D (7), scopoletin (8), and p-hydroxybenzaldehyde (9), were isolated from Tara (Caesalpinia spinosa Kuntze). The structures of the new compounds were characterized from their 1D and 2D NMR spectral data. All the compounds were isolated from this plant for the first time.

Keywords: 3-benzyl coumarin; Caesalpinia spinosa; Leguminaceae; Tara; homoisoflavan.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzopyrans
  • Caesalpinia / chemistry*
  • Coumarins
  • Molecular Structure
  • Nuclear Magnetic Resonance, Biomolecular
  • Phenols / chemistry
  • Phenols / isolation & purification*
  • Plant Leaves / chemistry

Substances

  • 3,4-cis-di-O-3-hydroxy-7-methoxy-3-(4-hydroxybenzyl)-4-ethoxychroman
  • 4'-hydroxy-7-methoxy-3-benzyl-2H-chromene
  • 7-methoxy-3-(4-hydroxybenzyl)coumarin
  • Benzopyrans
  • Coumarins
  • Phenols