New Flavan 3,4-Diol Derivatives from the Heartwood of Robinia Pseudoacacia

  • Bae, Young-Soo (Department of Wood Science and Technology, College of Forest Sciences, Kangwon National University) ;
  • Ham, Yeon-Ho (Radiation Food Technology and Bioscience Team, Korea Atomic Energy Research Institute) ;
  • Kim, Jin-Kyu (Department of Wood Science and Technology, College of Forest Sciences, Kangwon National University)
  • Received : 2000.08.08
  • Accepted : 2000.09.09
  • Published : 2000.12.30

Abstract

Two flavan 3,4-diol derivatives were isolated from the heartwood of Robinia pseudoacacia and characterized by spectroscopic methods including $^1H$ and $^{13}C$ NMR and positive FAB-MS. The structures were identified as 2,3-trans-3,4-cis-3,4,7,3',4',5'-hexahydroxy flavan, one of isomeric leucorobinetinidins, and 4'-methoxy-2,3-trans-3,4-cis-3,4,7,3',5'-pentahydroxy flavan.

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