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  • Title: Isolation and synthesis of 4-bromopyrrole-2-carboxyarginine and 4-bromopyrrole-2-carboxy-N(epsilon)-lysine from the marine sponge Stylissa caribica.
    Author: Grube A, Lichte E, Köck M.
    Journal: J Nat Prod; 2006 Jan; 69(1):125-7. PubMed ID: 16441082.
    Abstract:
    Two new bromopyrrole alkaloids were isolated from the Caribbean sponge Stylissa caribica. The new natural products, 4-bromopyrrole-2-carboxyarginine (1) and 4-bromopyrrole-2-carboxy-N(epsilon)-lysine (2), are derivatives of amino acids linked with a 4-bromopyrrole-2-carboxylic acid. The structures were elucidated on the basis of NMR and MS/MS data and their absolute configurations assigned via synthesis.
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