[Structure determination of three new triterpenoids from Helicteres angustifolia Linn].
D055598:Chemical Phenomena; D002621:Chemistry; D008516:Medicine, Chinese Traditional; D010946:Plants, Medicinal / Q000032:analysis*; D014315:Triterpenes / Q000302:isolation & purification*
D014315:Triterpenes; C049015:methyl helicterilate; C049014:methyl helicterate; C049016:helicterilic acid