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Characterization of N‐methyl‐L‐methionine sulfoxide and isethionic acid from the red alga Grateloupia doryphora
Author(s) -
SimonColin Christelle,
Kervarec Nelly,
Pichon Roger,
Bessières MarieAnne,
Deslandes Eric
Publication year - 2002
Publication title -
phycological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.438
H-Index - 44
eISSN - 1440-1835
pISSN - 1322-0829
DOI - 10.1046/j.1440-1835.2002.00265.x
Subject(s) - methionine sulfoxide , sulfoxide , methionine , biology , butyric acid , algae , sulfonic acid , amino acid , biochemistry , organic chemistry , botany , chemistry
SUMMARY Isethionic acid (2‐hydroxyethane sulfonic acid) and N‐methyl‐L‐methionine sulfoxide (4‐methane sulfinyl‐2‐methylamino butyric acid) were isolated from the red alga Grateloupia doryphora (Cryptonemiales) collected from Brittany (France); they were identified as major organic solutes together with floridoside (α‐D‐galacto‐pyranosyl‐(1–2)‐glycerol). The presence of isethionic acid has recently been reported in certain red algae, however, the occurrence of N‐methyl‐L‐methionine sulfoxide is still very rare. This report deals with the first isolation of isethionic acid and N‐methyl‐L‐methionine sulfoxide from G. doryphora and their subsequent NMR characterization.