Bioorganic and Medicinal Chemistry Letters 2016-Feb
Alkenes with antioxidative activities from Murraya koenigii (L.) Spreng.
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Four new alkenes (1-4), and six known alkenes (5-12) were isolated from Murraya koenigii (L.) Spreng. Their structures were elucidated on the basis of spectroscopic analyses and references. Compounds (1-12) were evaluated for antioxidative activities. Among them, compounds 1, 2, 4, and 7 exhibited significant antioxidative activities using 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay with IC50=21.4-49.5 μM. The known compounds (5-12) were isolated from this plant for the first time.