Somyote SutthivaiyakitJiraporn ThongtanSomchai PisutjaroenpongKanitha JiaranantanontPalangpon KongsaereeRamkhamhaeng UniversityChulabhorn Research InstituteMahidol University2018-09-072018-09-072001-05-01Journal of Natural Products. Vol.64, No.5 (2001), 569-571016338642-s2.0-0034997222https://repository.li.mahidol.ac.th/handle/123456789/26397Three new D:A-friedo-oleanane lactones, viz., 3-oxo-D:A-friedo-oleanan-27,16α-lactone (1), 3α-benzoyloxy-D:A-friedo-oleanan-27,16α-lactone (2), and 3β-hydroxy-D:A-friedo-oleanan-27,16α-lactone (3) were isolated from the stems of Mallotus repandus. Extensive use of NMR spectroscopic techniques led to full assignment of all 1H and 13C chemical shifts. The structure for 2 was confirmed by X-ray diffraction analysis.Mahidol UniversityAgricultural and Biological SciencesChemistryPharmacology, Toxicology and PharmaceuticsArticleSCOPUS10.1021/np0005560