J Integr Plant Biol. ›› 1988, Vol. 30 ›› Issue (5): -.
• Research Articles •
Ma Zi-chao and Lawrence J. Porter
Abstract: The gallic acid, (+)-catechin and myricetin glucoside have been isolated and indentified from Bendo Eucalyptus, and two kinds of dimeric flavan-3-ol B1 and B3 were isolated as their peracetates and identified by chromatography on TLC and 1H NMR spectroscopic cha- racteristics. It is showed that condensed tannin is a procyanidin with (+)-catechin as terminal units and (–)-epicatechin as extension units by hydrolyzation anthocyanidin reaction, phloroglucinol degradation and polarimetry, UV and IR spectrometry, HPLC, 3C NMR. Linkage is C4–C8. Degree of polymerization is about 4–5.
Key words: Bendo Eucalyptus, procyanidin, cyanidin, flavan-3-ol, condensed tannin, hydrolyzable tannin
Ma Zi-chao and Lawrence J. Porter. Tannins from Bendo Eucalyptus[J]. J Integr Plant Biol., 1988, 30(5): -.
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