Chulabhorn MahidolWirongrong KaweetripobHunsa PrawatSomsak RuchirawatChulabhorn Research InstituteThe Institute of Science and Technology for Research and Development, Mahidol UniversityMahidol University2018-07-242018-07-242002-06-03Journal of Natural Products. Vol.65, No.5 (2002), 757-760016338642-s2.0-0036109191https://repository.li.mahidol.ac.th/handle/20.500.14594/19981Four new mammea coumarins, mammea E/BA cyclo D (1), mammea E/BC cyclo D (2), mammea E/BD cyclo D (3), and mammea E/AC cyclo D (4), were isolated from the flowers of Mammea siamensis, along with six known coumarins. Extensive 1D and 2D NMR experiments and other spectroscopic studies, as well as chemical transformations, were employed to determine the structures of 1-4.Mahidol UniversityAgricultural and Biological SciencesChemistryPharmacology, Toxicology and PharmaceuticsArticleSCOPUS10.1021/np010579u