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Cuparene‐Derived Sesquiterpenes from the Chinese Red Alga Laurencia okamurai Y amada
Author(s) -
Mao ShuiChun,
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.200590074
Subject(s) - chemistry , laurencia , stereochemistry , sesquiterpene , algae , botany , biology
Four new cuparene‐derived sesquiterpenes, laureperoxide ( 1 ), 10‐bromoisoaplysin ( 2 ), isodebromolaurinterol ( 3 ), and 10‐hydroxyisolaurene ( 4 ), together with seven known, related sesquiterpenes, 5 – 11 , have been isolated from the red alga Laurencia okamurai. Their structures were determined on the basis of detailed spectroscopic analyses and comparison with known compounds. Compounds 8 – 11 were shown for the first time to represent true natural products, and the full 1 H‐ and 13 C‐NMR assignments of 5 are reported for the first time.