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Aplysqualenols A and B: Squalene‐Derived Polyethers with Antitumoral and Antiviral Activity from the Caribbean Sea Slug Aplysia dactylomela
Author(s) -
Vera Brunilda,
Rodríguez Abimael D.,
Avilés Edward,
Ishikawa Yasuyuki
Publication year - 2009
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.200900775
Subject(s) - aplysia , squalene , chemistry , slug , marine toxin , biochemistry , ecology , toxin , neuroscience , biology
The novel bromotriterpene polyethers aplysqualenol A ( 1 ) and B ( 2 ) have been isolated from the Caribbean sea slug Aplysia dactylomela , collected in Puerto Rico, and their structures and relative configurational assignments established from spectroscopic data aided by quantum mechanical calculations of NMR chemical shifts. Although both these compounds may be conceived as polyoxacyclic derivatives of the C 30 squalene skeleton, it is notable that 1 and 2 each possess an unprecedented C15‐to‐C24 flexible chain of (14 S *) spatial disposition that contains a unique ether bridge between C16 and C19. Biological activity screening tests revealed that, although aplysqualenol A ( 1 ) does not have significant antiinfective properties, it possesses potent antitumoral and antiviral activities. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)