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Coralloidolide A and Coralloidolide B, the First Cembranoids from a Mediterranean Organism, the Alcyonacean Alcyonium coralloides
Author(s) -
D'Ambrosio Michele,
Fabbri Daniele,
Guerriero Antonio,
Pietra Francesco
Publication year - 1987
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.19870700108
Subject(s) - chemistry , stereochemistry , mediterranean climate , botany , ecology , biology
The alcyonacean Alcyonium ( = Parerythropodium ) coralloides (P ALLAS 1766) is the first Mediterranean organism shown to contain cembranoids. These are of unusual type like coralloidolide A ( = (−)‐(1 R *, 2 R *, 3 R *, 12 S *, 5 Z , 7 Z , 9 Z )‐1, 2:7, 10‐diepoxy‐12‐isopropenyl‐5, 9‐dimethylcyclotetradeca‐5, 7, 9‐triene‐1, 3‐carbolactone; (−)‐6) and coralloidolide B ( =(−)‐(1 R *,2 S *,3 R *,7 S *,10 S *,12 S *,5 Z ,8 Z ,)‐2, 7:7, 10‐diepoxy‐1, 10‐dihydroxy‐12‐isopropenyl‐5, 9‐dimethylcyclotetradeca‐5,8‐diene‐1,3‐carbolactone; (−)‐8). Structural assignments are mainly based on 1D‐ and 2D‐NMR data and on chemical transformations.