Three new monoterpene glycosides, 4-O-ethylpaeoniflorin (1), 6'-O-benzoyl-4''-hydroxy-3"-methoxy-paeoniflorin (2), 6'-O-benzoylalbiflorin (3), and a new monoterpenoid, 9-hydroxy-paeonilactone-A (4) were isolated from the root cortex of Paeonia delavayi. Their structures were elucidated on the basis of spectral methods.
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Wu et al. (2002) studied this question.
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