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Tirucallane triterpenoids from the stems of Brucea mollis. | LitMetric

Tirucallane triterpenoids from the stems of Brucea mollis.

Chem Biodivers

State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, P. R. China.

Published: April 2013

AI Article Synopsis

  • Three new tirucallane triterpenoids, named brumollisols A-C, were discovered in the stems of Brucea mollis, alongside five previously known compounds.
  • The structures of these compounds were determined using advanced techniques like 1D and 2D NMR and mass spectrometry.
  • Compound 6 showed notable cytotoxicity against specific cancer cell lines and at a concentration of 10 µM, compounds 1-5, 7, and 8 effectively inhibited nitric oxide production in mouse macrophages.

Article Abstract

Three new tirucallane triterpenoids, brumollisols A-C (1-3, resp.), together with five known analogues, (23R,24S)-23,24,25-trihydroxytirucall-7-ene-3,6-dione (4), piscidinol A (5), 24-epipiscidinol A (6), 21α-methylmelianodiol (7), and 21β-methylmelianodiol (8), were isolated from an EtOH extract of the stems of Brucea mollis. Their structures were elucidated by means of spectroscopic methods including 1D- and 2D-NMR techniques and mass spectrometry. In the in vitro assays, compound 6 exhibited significant cytotoxic activity against A549 and BGC-823 cancer cells with IC50 values of 1.16 and 3.01 μM, respectively. At a concentration of 10 μM, compounds 1-5, 7, and 8 were found to inhibit NO production in mouse peritoneal macrophages with inhibitory ratios ranging from 39.8±7.7 to 68.2±4.5%.

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Source
http://dx.doi.org/10.1002/cbdv.201200079DOI Listing

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