ISOLATION AND STRUCTURES OF NEW UREIDO AMINO ACIDS, LIVIDINE AND GRATELOUPINE, FROM RED ALGAE GRATELOUPIA C. AGARDH GENUS

Article abstract of DOI:10.1016/0040-4020(84)85125-X

Two new ureido amino acids, lividine (1) and grateloupine (2) , were isolated from Grateloupia livida and Grateloupia filicina respectively.The structures of both amino acids were assumed mainly by NMR spectra and determined as N^ω-carbamoyl-L-c