An iboga alkaloid chemotaxonomic marker from endemic Tabernaemontana ternifolia with antitubercular activity
- Univ. of Santo Tomas, Manila (Philippines); Palawan State Univ., Palawan (Philippines)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Washington State Univ., Pullman, WA (United States)
- Washington State Univ., Pullman, WA (United States)
- University of Illinois at Chicago, IL (United States). Inst. for Tuberculosis Research
- Univ. of Santo Tomas, Manila (Philippines). Phytochemistry Lab., Research Center for the Natural and Applied Sciences
In this work, coronaridine (1) was isolated from the CH2Cl2 root extract of Tabernaemontana ternifolia. The structure of 1 was established from 1D- and 2D-NMR and HR-ESIMS experiments, and by comparison with reported spectroscopic data. To date, this is the first report of compound 1 from T. ternifolia, introduced as new Tabernaemontana species from Philippines in 2005 on the basis of morphological characters. Coronaridine, an iboga-type indole alkaloid, has been isolated from over 50 Tabernaemontana species and can thus be inferred as a chemotaxonomic marker of the genus. T. ternifolia has a distinct arrangement of leaves not known in the genus, but is variable in other genera. Its isolation from endemic T. ternifolia establishes its position in the genus and supports the claim that coronaridine is a chemical marker of the genus Tabernaemontana. Interestingly, coronaridine exhibited relatively weak activity against Mycobacterium tuberculosis H37Rv (MIC 82.64 μg/mL) (Rifampicin MIC 0.05 μg/mL).
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1642384
- Report Number(s):
- PNNL-SA-139640
- Journal Information:
- Natural Product Research, Vol. 34, Issue 8; ISSN 1478-6419
- Publisher:
- Taylor & FrancisCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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