A collection of Lyngbya majuscula from Palau contained the peptides dolasta
tin 3 (1), homodolastatin 3 (2), and kororamide (3), together with aplysiat
oxin (4), debromoaplysiatoxin (5), and oscillatoxin A (6). The structures o
f the new peptides homodolastatin 3 (2) and kororamide (3) were determined
by interpretation of spectroscopic data and chemical degradation.