Caulerpenyne-Amine Reacting System as a Model forin vivo Interactions of Ecotoxicologically Relevant Sesquiterpenoids of the mediterranean-adapted tropical green seaweedcaulerpa taxifolia
Caulerpenyne (1), the most abundant of the ecotoxicologicallyrelevantsesquiterpenoids of the Mediterranean-adaptedtropicalgreen seaweed Caulerpa taxifolia, was found to react with Et3N or pyridine in MeOH by initial deprotection of C(1)HO to give oxytoxin 1 (2a), previously isolated from the sacoglossan mollusc Oxynoe olivacea. With BuNH2, without any precaution to exclude light, 1 gave the series