LIU Rong, DING Li-sheng, CHEN Neng-yu, WANG Ming-kui. CHEMICAL CONSTITUENTS FROM THE ROOT OF RUBUS CHROOSEPALUSJ. Acta Pharmaceutica Sinica, 2001, 36(1): 38-41.
Citation: LIU Rong, DING Li-sheng, CHEN Neng-yu, WANG Ming-kui. CHEMICAL CONSTITUENTS FROM THE ROOT OF RUBUS CHROOSEPALUSJ. Acta Pharmaceutica Sinica, 2001, 36(1): 38-41.
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CHEMICAL CONSTITUENTS FROM THE ROOT OF RUBUS CHROOSEPALUS

    Abstract
  • AIM　To investigate the chemical constituents of Rubus chroosepalus Focke. METHODS The methanol extracts were suspended in H2O and then extracted with EtOAc. Column chromatography was used for separation and purification, while spectral analysis was used for identification. RESULTS　Seven compounds were isolated and identified as 2α,3β-dihydroxy-urs-12,19-dien-23,28-oic acid (I), 2α,3β,23-trihydroxy-urs-12,18-dien-28-oic acid (IIa), 2α,3β,23-trihydroxy-urs-12,19-dien-28-oic acid (IIb), 2α,3α-dihydroxy-urs-12,18-dien-28-oic acid (IIIa), 2α,3α-dihydroxy-urs-12,19-dien-28-oic acid (IIIb), and the acetonide of IIIa and IIIb (IVa and IVb). CONCLUSION　I was found to be a new pentacyclic triterpenoid acid.
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