Abstract
Chemical investigation of the extract of Dendronephthya hemprichi, collected from the Red Sea, Egypt, delivered dendrophen (1), the first 3β -acetoxy-glycyrrhetyl amino acid conjugate obtained from nature. Additionally, a new polyhydroxy sterol, dendrotriol (2), together with cholesterol and hexitol were isolated. Chromatographic separation of the low-polarity components of the D. hemprichi extract afforded 4-oxo-pentanoic acid, 2-methyl-acrylic acid 2-diethylaminoethyl ester (3), juniper camphor (4), and 2-octadecanone. The structures of 1 and 2 were confirmed by 1D and 2D NMR studies and mass spectrometry.
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