Neoclerodane and labdane diterpenoids from Plectranthus ornatus
Three new diterpenoids, a neoclerodane and two labdane derivatives, have been isolated from an acetone extract of Plectranthus ornatus. The structures. of these compounds (plectrornatins A-C, 1-3, respectively) were established mainly by spectroscopic means, particularly by 1D and 2D NMR studies and...
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| Other Authors: | , , , , , |
| Format: | article |
| Language: | eng |
| Published: |
2015
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10451/21129 |
| Country: | Portugal |
| Oai: | oai:repositorio.ul.pt:10451/21129 |
| Summary: | Three new diterpenoids, a neoclerodane and two labdane derivatives, have been isolated from an acetone extract of Plectranthus ornatus. The structures. of these compounds (plectrornatins A-C, 1-3, respectively) were established mainly by spectroscopic means, particularly by 1D and 2D NMR studies and, in the case of the neoclerodane 1, by an X-ray diffraction analysis. Compounds. 1 and 3 showed moderate antimicrobial against five Candida species and selected Gram negative and Gram positive bacteria strains. |
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