Hymenamides a and b, new proline-rich cyclic heptapeptides from the okinawan marine sponge hymeniacidon sp.

Hymenamides a and b, new proline-rich cyclic heptapeptides from the okinawan marine sponge hymeniacidon sp. Hymenamides C ~ E, new cyclic heptapeptides with two proline residues from the okinawan marine sponge hymeniacidon sp. Hymenamides G, H, J, and K, four new cyclic octapeptides from the Okinawan marine sponge Hymeniacidon sp. Hymenamide F, new cyclic heptapeptide from marine sponge Hymeniacidon sp Wainunuamide, a histidine-containing proline-rich cyclic heptapeptide isolated from the Fijian marine sponge Stylotella aurantium 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 Stylissamides A–D – New Proline‐Containing Cyclic Heptapeptides from the Marine Sponge <i>Stylissa caribica</i> Spongiacidins A−D, New Bromopyrrole Alkaloids from <i>Hymeniacidon</i> Sponge Hymenin, a novel α-adrenoceptor blocking agent from the Okinawan marine spongeHymeniacidon sp.