Abstract
AbstractTwo new flavanol derivatives, bearing phenylpropionic acid moiety at C‐4 through a CC bonding, named brainin B (1) and brainin C (2), were isolated from Brainea insignis. Their structures were elucidated by NMR and MS spectrometry. Brainins B and C were tested for their antioxidant properties in DPPH (2,2‐diphenyl‐1‐picrylhydrazyl) radical scavenging, and both compounds displayed potent antioxidant activities.
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