Korean Journal of Pharmacognosy (생약학회지)

The Korean Society of Pharmacognosy (한국생약학회)
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Triterpenoid Components of Betula latifolia $K_{OMAROV}$ -Isolation and Characterization of Triterpenoids-

자작나무 엽(葉)의 Triterpenoid 성분연구(成分硏究) -Triterpenoid의 분리(分離) 및 동정(同定)-

  • Han, Byung-Hoon (Natural Products Research Institute, Seoul National University) ;
  • Chi, Hyung-Joon (Natural Products Research Institute, Seoul National University) ;
  • Han, Young-Nam (Natural Products Research Institute, Seoul National University)
  • Published : 1973.12.15
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Abstract

Five crystalline substances, which are positive to$L_{IEBERMAN}-B_{URCHARD}$ reaction, were isolated from the unsaponifiable fraction of the fresh leaves of Betula latifolia $K_{OMAROV}$ (Betulaceae)by silica gel column chromatographic purification. Compound $A\;(C_{29}H_{50}O,\;mp\;136^{\circ}), \;B\;(C_{30}H_{52}O_3,\;mp\;165^{\circ}), \;C\;(C_{30}H_{52}O_4,\;mp\;237^{\circ}), \;D\;(C_{30}H_{52}O_3,\;mp\;196^{\circ})\;and\; E\;(C_{30}H_{52}O_4,\;mp\;121^{\circ})$ were isolated. Compound B was characterized as a new tetracyclic triterpenoid. Compounds A, C and D were identified as ${\beta}-sitosterol$, betulatriterpene C, and betulafolienetriol, respectively.

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