New Antibacterial Diterpenes from <i>Pseudopterogorgia elisabethae</i>

Abstract

Abstract From the MeOH extract of Pseudopterogorgia elisabethae , collected from the Bahamas, four new diterpenes, elisabethin E ( 1 ), elisabethin F ( 2 ), pseudopterosin P ( 3 ), and pseudopterosin Q ( 4 ), were isolated and their structures established with the aid of extensive spectroscopic studies. Compounds 3 and 4 showed antibacterial activity selectively against the Gram‐ positive bacteria Streptococcus pyogenes, Staphylococcus aureus , and Enterococcus faecalis.