Keramamides M and N, two new cyclic peptides with a sulfate ester from Theonella sponge

Keramamides M and N, two new cyclic peptides with a sulfate ester from Theonella sponge Keramamides E, G, H, and J, new cyclic peptides containing an oxazole or a thiazole ring from a Theonella sponge Keramamides K and L, new cyclic peptides containing unusual tryptophan residue from Theonella sponge Keramamide A, a novel peptide from the Okinawan marine sponge Theonella sp. Keramamine-A and -B, novel antimicrobial alkaloids from the Okinawan marine sponge sp. Hymenamides C ~ E, new cyclic heptapeptides with two proline residues from the okinawan marine sponge hymeniacidon sp. Hymenamides a and b, new proline-rich cyclic heptapeptides from the okinawan marine sponge hymeniacidon sp. Microsclerodermins C - E, antifungal cyclic peptides from the lithistid marine sponges Theonella sp. and Microscleroderma sp. Keramaphidin C and keramamine C plausible biogenetic precursors of manzamine C from an Okinawan marine sponge New Cyclic Peptides from the Indonesian Sponge Theonella swinhoei