Bisamides from Aglaia species: structure analysis and potential to reverse drug resistance with cultured cells.

The structure of pyramidatine [1], a new bisamide alkaloid from leaves of Aglaia pyramidata, was determined through extensive nmr studies, including homonuclear COSY, NOESY, APT, HETCOR, and selective INEPT techniques. Revision of the 13C-nmr assignment of piriferine [2], an alkaloid previously isolated from A. pirifera, was achieved by examination of several 2D nmr spectra (homonuclear COSY, NOESY, and HETCOR) and confirmed by selective INEPT nmr experiments. Evaluation of the cytotoxic potential of the two alkaloids, along with two other bisamides from Aglaia odorata, odorine [3] and 5'-epi-odorine [4], was carried out in eleven human cancer cell lines. None of these bisamides showed significant cytotoxicity. Nevertheless, piriferine [2], odorine [3], and 5'-epi-odorine [4] were found to inhibit the growth of the vinblastine-resistant KB cells by enhancing the anticancer activity of vinblastine.
AuthorsE Saifah, J Puripattanavong, K Likhitwitayawuid, G A Cordell, H Chai, J M Pezzuto
JournalJournal of natural products (J Nat Prod) Vol. 56 Issue 4 Pg. 473-7 (Apr 1993) ISSN: 0163-3864 [Print] UNITED STATES
PMID8496701 (Publication Type: Journal Article, Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • Alkaloids
  • Antineoplastic Agents, Phytogenic
  • Vinblastine
  • Alkaloids (chemistry, pharmacology)
  • Antineoplastic Agents, Phytogenic (chemistry, pharmacology)
  • Cell Survival (drug effects)
  • Drug Resistance
  • Humans
  • KB Cells
  • Magnetic Resonance Spectroscopy
  • Tumor Cells, Cultured
  • Vinblastine (pharmacology)

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