Tetrafucol A is a fucol-type

phlorotannin Phlorotannins are a type of tannins found in brown algae such as kelps and rockweeds or sargassacean species, and in a lower amount also in some red algae. Contrary to hydrolysable or condensed tannins, these compounds are oligomers of phlorogl ...

found in the brown algae ''

Ascophyllum nodosum ''Ascophyllum nodosum'' is a large, common cold water seaweed or brown alga (Phaeophyceae) in the family Fucaceae, being the only species in the genus ''Ascophyllum''. It is a seaweed that only grows in the northern Atlantic Ocean, also known in ...

'', ''

Analipus japonicus ''Analipus japonicus'', or sea fir, is a brown alga species in the genus ''Analipus''. This species contains the phlorotannins difucol, trifucol, tetrafucol A and B, two pentafucols, four hexafucols, a heptafucol mixture and halogenated co ...

'' and ''

Scytothamnus australis ''Scytothamnus australis'' is a brown alga species in the genus ''Scytothamnus'' found in New Zealand. It is a sulphated polysaccharide and the type species in the genus. The species contains the phlorotannins trifucol, tetrafucol A, tetrafuco ...

''. In ''A. japonicus'', 5'-bromo- and 5'-chlorotetrafucol-A can also be detected.

References

Phlorotannins Natural phenol tetramers {{aromatic-stub