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Hyrtiosins A–E, Five New Scalarane Sesterterpenes from the South China Sea Sponge Hyrtios erecta
Author(s) -
Yu ZhiGuo,
Bi KaiShun,
Guo YueWei
Publication year - 2005
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200590070
Subject(s) - sponge , chemistry , stereochemistry , two dimensional nuclear magnetic resonance spectroscopy , botany , biology
Five new scalarane sesterterpenes, hyrtiosins A–E ( 1 – 5 ), together with three previously reported sesterterpenes, 25‐dehydroxy‐12‐ epi ‐scalarin ( 6 ), 12‐ epi ‐scalarin ( 7 ) and heteronemin ( 9 ), were isolated from the South China Sea sponge Hyrtios erecta. Their structures were determined on the basis of extensive NMR studies and high‐resolution MS measurements.