CHEMICAL EXAMINATION OF THE ROOTS OF TERMINALIA ARJUNA - THE STRUCTURES OF ARJUNOSIDE III AND ARJUNOSIDE IV, TWO NEW TRITERPENOID GLYCOSIDES

Article abstract of DOI:10.1016/0031-9422(82)83042-2

The non-phenolic fraction of the alcoholic extract of the root bark of Terminalia arjuna yielded two new triterpenoid glycosides, arjunoside III and arjunoside IV in addition to arjunglucoside I and arjunetin.The structure of arjunoside II was established as the 28-β-D(+)-glucuronopyranoside of arjunic acid by a study of its chemical and spectroscopic (1H and 13C NMR) data.Arjunoside IV was shown to be the 3-O-α-L(-)-rhamnoside of arjunic acid.Leucocyanidin, ellagic acid and gallic acid have been isolated from the phenolic part of the root extract.Key Word Index - Terminalia arjuna; Combretaceae; arjunoside III; arjunoside V; triterpenoid glycosides.