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ID: ALA3797042

Journal: J Nat Prod

Title: Hybrid Pyrrole-Imidazole Alkaloids from the Sponge Agelas sceptrum.

Authors: Muñoz J, Köck M.

Abstract: A chemical investigation of the tropical sponge Agelas sceptrum from Plana Cays (Bahamas) led to the isolation of two hybrid pyrrole-imidazole alkaloids (PIAs), 15'-oxoadenosceptrin (1) and decarboxyagelamadin C (2). Herein, we report their challenging structure elucidation established by NMR and ECD spectroscopy. 15'-Oxoadenosceptrin (1) shows sceptrin merged with an adenine moiety, not yet encountered in the PIA family, whereas decarboxyagelamadin C (2) is a close derivative of agelamadins C to E recently isolated from an Agelas sp. from Okinawa.

CiteXplore: 26872204

DOI: 10.1021/acs.jnatprod.5b00265