A new antibacterial octaketide and cytotoxic phenylethanoid glycosides from Pogostemon cablin (Blanco) Benth

Kim KH, Beemelmanns C, Clardy J, Cao S (2015) A new antibacterial octaketide and cytotoxic phenylethanoid glycosides from Pogostemon cablin (Blanco) Benth Bioorg. Med. Chem. Lett. 14(25), 2834-2836. PubMed

Abstract

A new octaketide, named cytosporone V (1), and two other known phenylethanoid glycosides (23), were isolated from the aerial parts of Pogostemon cablin (Blanco) Benth. The structure of 1 was elucidated by a combination of extensive spectroscopic analyses, including extensive 2D NMR and HR-MS. Compounds 13 displayed weak antibacterial activity against two gram-positive bacteria, Bacillus subtilis and Staphylococcus aureus. All isolates were also evaluated for their antiproliferative activities against four human tumor cell lines (A549, SK-OV-3, SK-MEL-2, and HCT-15). Compounds 2 and 3 showed significant cytotoxicity against A549, SK-OV-3, SK-MEL-2, and HCT-15 cell lines with IC50 values ranging from 2.73 to 9.52 μM.

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doi: 10.1016/j.bmcl.2015.04.094 PMID: 25981688