Phakellisins A-E, cyclopeptides from a marine sponge Phakellia sp. guided by LC-MS.
Bioorganic chemistry(2023)
摘要
A chemical investigation of the marine sponge Phakellia sp. from the South China Sea yielded five new cyclopeptides, phakellisins A-E (1-5). Structures of these compounds were determined by comprehensive analysis of 1D/2D NMR, HRESIMS/MS spectroscopic data and the advanced Marfey's method. All compounds were evaluated for their cytotoxic activity. Compound 1 showed a strong inhibitory activity against WSU-DLCL-2 cells with an IC50 value of 5.25 ± 0.2 μM by induction of G0/G1 cell cycle arrest and apoptosis.
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