Mukhtar HM, Ansari SH, Ali M, Naved T. New oleanene and fernane-type triterpenes from the stem bark of Betula pendula roth.
Pharmazie 2003;
58:671-3. [PMID:
14531469]
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Abstract
A new oleanene-type triterpene, named betuloleanolic acid acetate and fernane-type triterpenes, namely betufernanediol A and betufernanediol B (isomers) have been isolated from the stem bark of Betula pendula. Their structures have been established as olean-12-en-3beta-ylacetate-29-oic acid, fern-22(29)-en-3beta,12beta-diol and fem-22(29)-en-3alpha,12beta-diol, respectively, on the basis of spectral data analysis and chemical reactions.
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