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From the ascidian Cnemidocarpa bicornuta, 2-(3'-bromo-4'-hydroxyphenol)ethanamine (3'-bromotyramine) (1) has been isolated along with the previously reported sponge metabolite, 1,3-dimethylisoguanine. The structure of 1 was confirmed by synthesis.
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Lindsay et al. (1998) studied this question.
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