Polyanthumin, a novel cyclobutane chalcone trimmer from Memecylon polyanthum

  title={Polyanthumin, a novel cyclobutane chalcone trimmer from Memecylon polyanthum},
  author={G. Chen and Cheng-bin Cui and Ai-di Qi and Chang‐Wei Li and Zun-Wei Tao and Rong Ren},
  journal={Journal of Asian Natural Products Research},
  pages={170 - 177}
  • G. Chen, C. Cui, R. Ren
  • Published 26 January 2015
  • Chemistry
  • Journal of Asian Natural Products Research
A novel unusual trimmer chalcone, polyanthumin (1), together with five known compounds myricetin 3-O-(3″-O-galloyl)-α-l-rhamnopyranoside (2), sulfuretin (3), fustin (4), gallic acid (5), and ethyl gallate (6), was isolated from the dry stems of Memecylon polyanthum H.L. Li. Among them, compound 1 is a new chalcone trimmer with a novel cyclobutane skeleton in nature. Compounds 3 and 4 are flavonoids carrying a single 7-OH in A ring, which provided the first example of these class flavonoids from… 
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