Mammea coumarins from the flowers of Mammea siamensis.
Four 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
Chulabhorn
C
Chulabhorn Research Institute, Vipavadee Rangsit Highway, Bangkok 10210, Thailand.
Kaweetripob
Wirongrong
W
Prawat
Hunsa
H
Ruchirawat
Somsak
S
D000107:Acetylation; D002851:Chromatography, High Pressure Liquid; D003374:Coumarins / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D013785:Thailand
D003374:Coumarins