Notoamides F−K, Prenylated Indole Alkaloids Isolated from a Marine-Derived Aspergillus sp.

Abstract
Six new prenylated indole alkaloids, named notoamides F−K (8−13), were isolated from a marine-derived Aspergillus sp. Their structures, including absolute configurations, were elucidated by spectroscopic methods. Notoamide I (11) showed weak cytotoxicity against HeLa cells with an IC50 value of 21 μg/mL.