Tm. Hu et al., SPIROLIDE-B AND SPIROLIDE-D, 2 NOVEL MACROCYCLES ISOLATED FROM THE DIGESTIVE GLANDS OF SHELLFISH, Journal of the Chemical Society, Chemical Communications, (20), 1995, pp. 2159-2161
Two polar lipid-soluble macrocycles 1 and 2, a spiro-linked tricyclic
ether ring system and an unusual seven-membered spiro-linked cyclic im
inium moiety, have been isolated from the digestive glands of mussels
(Mytilus edulis) and scallops (Placopecten magellanicus).