3-Amino-1-(2-Aminoimidazolyl)-prop-1-ene from the Marine Sponges Teichaxinella morchella and Ptilocaulis walpersi

3-Amino-1-(2-Aminoimidazolyl)-prop-1-ene from the Marine Sponges Teichaxinella morchella and Ptilocaulis walpersi Structures and Total Synthesis of 2-Aminoimidazoles from a Notodoris Nudibranch Structures and Total Synthesis of 2-Aminoimidazoles from a Notodoris Nudibranch Fusarin C, (7Z)-Fusarin C and (5Z)-Fusarin C; Inhibitors of Dihydroxynaphthalene-melanin Biosynthesis from Nectria coccinea (Cylindrocarpon sp.). Axinellamines A−D, Novel Imidazo−Azolo−Imidazole Alkaloids from the Australian Marine Sponge Axinella sp. Axinellamines A−D, Novel Imidazo−Azolo−Imidazole Alkaloids from the Australian Marine Sponge <i>Axinella</i> sp. 2-Aminoimidazoles and their zinc complexes from indo-pacific leucetta sponges and notodoris nudibranchs 2-amino imidazole alkaloids from the marine sponge leucetta chagosensis Lissodendrins A and B: 2‐Amino­imidazole Alkaloids from the Marine Sponge Lissodendoryx (Acanthodoryx) fibrosa Oriamide, a new cytotoxic cyclic peptide containing a novel amino acid from the marine sponge Theonella sp