1. Academic Validation
  2. Pyrrolizidine alkaloids from Echium glomeratum (Boraginaceae)

Pyrrolizidine alkaloids from Echium glomeratum (Boraginaceae)

  • Phytochemistry. 2008 Sep;69(12):2341-6. doi: 10.1016/j.phytochem.2008.06.017.
Feras Q Alali 1 Yahya R Tahboub Eyad S Ibrahim Amjad M Qandil Khaled Tawaha Jason P Burgess Arlene Sy Yuka Nakanishi David J Kroll Nicholas H Oberlies
Affiliations

Affiliation

  • 1 Department of Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan. falali@just.edu.jo
Abstract

The methanolic extract of the whole plant of Echium glomeratum Poir. (Boraginaceae) has afforded five Pyrrolizidine Alkaloids, three that were (7S, 8R)-petranine (1), (7S, 8S)-petranine (2), and (7R, 8R)-petranine (3a) or (7R, 8S)-petranine (3b), comprising a tricyclic Pyrrolizidine Alkaloids subclass; and two that were known but to the species: 7-angeloylretronecine (4) and 9-angeloylretronecine (5). All compounds were tested against a human tumor panel for cytotoxicity; no activity was observed (EC50 values>20microg/ml).

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