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Short Paper | Regular issue | Vol 98, No. 4, 2019, pp.558-563
Published online, 14th March, 2019
DOI: 10.3987/COM-19-14054
Agesamines A and B, New Dibromopyrrole Alkaloids from the Sponge Agelas sp.

Ayako Katsuki, Hikaru Kato, Yuji Ise, Fitje Losung, Remy E. P. Mangindaan, and Sachiko Tsukamoto*

*Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-hon-machi, Kumamoto 862-0973, Japan

Abstract

New dibromopyrrole alkaloids, agesamines A (1) and B (2), were obtained as an inseparable epimeric mixture from a marine sponge Agelas sp., collected in Indonesia. The planar structures were elucidated by analysis of spectroscopic data, and the absolute configuration was determined by the calculated ECD spectrum.