Two analogs of azaspiracid isolated from mussels, Mytilus edulis, involved in human intoxication in Ireland

Abstract
Two new analogs of azaspiracid, azaspiracid‐2 and azaspiracid‐3, were isolated from mussels collected at Arranmore Island, Ireland in 1997 as additional causes of human intoxication. Their structures were determined to be 8‐methylazaspiracid and 22‐demethylazaspiracid, respectively by NMR and negative ion FAB CID MS/MS experiments. Copyright © 1999 John Wiley & Sons, Ltd.