Abstract
The absolute configuration of dilospirane B (1), a diterpene featuring a novel carbon framework recently isolated from the brown alga Dilophus spiralis, was established on the basis of theoretical calculations of its electronic circular dichroism spectra applying the time-dependent density functional theory method. Metabolite 1, evaluated for its in vitro antitumor activity against six human cancer cell lines displaying various levels of sensitivity to pro-apoptotic stimuli, exhibited growth inhibitory activity with a mean IC 50 value of 66 μM. Quantitative videomicroscopy analyses indicated that 1 initially displays cytostatic effects which later become cytotoxic.
| Original language | English |
|---|---|
| Pages (from-to) | 747-751 |
| Number of pages | 5 |
| Journal | Phytochemistry Letters |
| Volume | 5 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Dec 2012 |
| Externally published | Yes |
Keywords
- Absolute configuration
- Antitumor activity
- Dilospirane B
- ECD