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Diterpenes from the brown alga Dilophus mediterraneus
Author(s) -
Goez Christiane E.,
Wright Anthony D.,
König Gabriele M.,
Sticher Otto
Publication year - 1994
Publication title -
phytochemical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 72
eISSN - 1099-1565
pISSN - 0958-0344
DOI - 10.1002/pca.2800050205
Subject(s) - chemistry , diterpene , dichloromethane , europium , lanthanide , reagent , stereochemistry , organic chemistry , solvent , ion
From the dichloromethane extract of the brown alga Dilophus mediterraneus nine diterpenes, belonging to different skeletal classes, were isolated and characterised spectroscopically (MS, NMR, UV and IR). The structure of a new natural diterpene (1 R *, 2 E , 4 R * , 7 E , 11 R * , 12 S * )‐12, 18‐dihydroxydolabella‐2,7‐diene) was resolved with the aid of the lanthanide shift reagent Europium(III)‐ tris (1,1,1,2,2,3,3)‐heptafluoro‐7,7‐dimethyl‐ d 6 ‐octa‐4,6‐dion‐ d 3 , C 30 H 3 D 27 EuF 21 O 6 , (Eu(fod) 3 ).