Nine nitrogen-containing compounds including 1 new alkaloid, aspergilamide A (1), and 8 known alkaloids and dipeptides, pseurotin A (2), fumigaclavine C (3), isochaetominine (4), cyclo(L-Pro-L-tyr) (5), cyclo-trans-4-OH-(L)-Pro-(L)-Phe (6), brevianamide F (7), and spirotryprostatins A and B (8 and 9), were obtained from the mangrove-derived fungus Aspergillus sp. 87. Their structures were identified by extensive spectroscopic analyses. All compounds did not show significant antibacterial activities.