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Four new "cage-like" monoterpene glucosides (1-4) were isolated from Paeonia lactiflora. The structures of these compounds were established by spectroscopic methods, mainly 1D and 2D NMR, and mass spectrometric analysis. Compound 4 exhibited moderate cell-protective activity against hydrogen peroxide-induced PC12 cell damage.
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Wang et al. (2009) studied this question.
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