AI Article Synopsis
- A new clerodane diterpenoid and two known flavonoids were isolated from the plant Crassocephalum bauchiense through phytochemical investigation.
- Compound 2 demonstrated weak activity against the Plasmodium falciparum strain, while compounds 1 and 3 showed no activity.
- The structures of these compounds were determined using various advanced spectral analysis techniques, including NMR and mass spectrometry.
Article Abstract
A phytochemical investigation of the whole plant of Crassocephalum bauchiense Huch. resulted in the isolation of a new clerodane diterpenoid, ent-2β,18,19-trihydroxycleroda-3,13-dien-16,15-olide (1), together with two known flavonoids 3',5-dihydroxy-4',5',6,7,8-pentamethoxyflavone (2) and 4',5-dihydroxy-3',5',6,7,8-pentamethoxyflavone (3). The compounds were tested against the chloroquine-sensitive 3D7 strain of Plasmodium falciparum. Compound 2 showed weak activity (IC50 = 10.1 g/mL) whilst compounds 1 and 3 were inactive. The structures of the compounds were elucidated by using detailed spectral analyses, especially (1)H and (13)C NMR, (1)H-(1)H COSY, NOESY, HMBC and HR-ESI-MS.
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| http://dx.doi.org/10.1080/14786419.2015.1022541 | DOI Listing |
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