In continuation of our longstanding interest in the total synthesis of natural products,[2] we have recently reported a concise synthesis of the diazatricyclic core of sarain A.[3] In connection with this, we have undertaken a study aimed at the total synthesis of haliclonin A (1). Preliminary results, involving the construction of compound 2, a tricyclic core of haliclonin A (1), are reported herein. Structurally, halicloninA (1) is a tetracyclic compound ...
