Chemical Investigations of Heteronema Erecta and an Unidentified Sponge Prom the Red Sea
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Date
1989-06
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Addis Ababa Universty
Abstract
Heteronemin, a pentacyclic sesterterpene has been
characterized from the chloroform extract of an unidentified
sponge sample collected from Massawa, Red Sea. The structure
was established by 1H nmr, 13C nmr, and mass spectral
interpretation.
Another CZ9 compound characterized as S-sitosterol,
has been isolated from the chloroform extract of another
unidentified sponge sample, collected from the same locality
as the first one. The structure of the sterol was characterized
by spectral interpretation, and comparing its physical constant~
with authentic sample.
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Keywords
Red Sea