Abstract
A new sesquiterpene cacaroborin (1) was isolated from the roots of Cacalia roborowskii, together with three known ones, cinalbicol (2), isopetasin (3), and 3alpha-angeloyloxylactone (4). The structure of compound 1 was elucidated as 1beta,10alpha-dihydroxy-8alpha-methoxyeremophil-7(11)-en-8beta,12-olide on the basis of spectral evidence (1D, 2D NMR, IR, EI-MS, and HR-ESI-MS) and X-ray diffraction analysis.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Asteraceae / chemistry*
-
Crystallography, X-Ray
-
Drugs, Chinese Herbal / chemistry
-
Drugs, Chinese Herbal / isolation & purification*
-
Molecular Conformation
-
Molecular Structure
-
Nuclear Magnetic Resonance, Biomolecular
-
Plant Roots / chemistry
-
Sesquiterpenes / chemistry
-
Sesquiterpenes / isolation & purification*
Substances
-
Drugs, Chinese Herbal
-
Sesquiterpenes
-
cacaroborin