1. A new natural spiro heterocyclic compound and the cytotoxic activity of the secondary metabolites from Juniperus brevifolia leaves
- Author
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Moujir, Laila M., Seca, Ana M.L., Araujo, Liliana, Silva, Artur M.S., and Barreto, M. Carmo
- Subjects
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ALTERNATIVE medicine , *ANALYSIS of variance , *ANTI-infective agents , *BIOLOGICAL assay , *BIOPHYSICS , *PHYSICAL & theoretical chemistry , *DOSE-effect relationship in pharmacology , *LEAVES , *RESEARCH methodology , *MEDICINAL plants , *NUCLEAR magnetic resonance spectroscopy , *RESEARCH funding , *PHYTOCHEMICALS , *PLANT extracts , *PHARMACODYNAMICS - Abstract
Abstract: A new natural spiro compound 3,4-dehydrotheaspirone 1 and the known arctiol [1β,6α-dihydroxy-4(14)-eudesmene] 2 were isolated from Juniperus brevifolia. Arctiol is reported for the first time in the Juniperus genus. Their structures were established by 1D, and 2D NMR and MS spectra. Antimicrobial and cytotoxic activities of 1 and several secondary metabolites 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 previously isolated by our group from J. brevifolia were evaluated and some SAR has been established. The 18-hydroxydehydroabietane (4) displayed great antiproliferative activity against cancer cell lines tested, namely HeLa, A-549 and MCF-7. Compound 4 also presented a significant bactericidal effect against Bacillus cereus at different concentrations tested. [Copyright &y& Elsevier]
- Published
- 2011
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