Isolations and structures of new ureido amino acids, lividine and grateloupine, from red algae Ograteloupia c. agardh genus

Isolations and structures of new ureido amino acids, lividine and grateloupine, from red algae Ograteloupia c. agardh genus Structural determination of carnosadine, a new cyclopropyl amino acid, from red alga Grateloupia carnosa Structures of domoilactone A and B, novel amino acids from the red alga, A new acidic amino acid from a Basidiomycetes, Lactarius piperatus. Nicaeensin, a New Amidinoureido Compound from the Red Alga Schottera nicaeensis Alkaloids of the Papaveraceae. X. New alkaloids from Argemone gracilenta Die freien Aminosäuren der Samen von<i>Acacia Willardiana (Mimosaceae).</i>Isolierung von Willardiin, einer neuen pflanzlichen Aminosäure, vermutlich L-Uracil-[β-(α-amino-propionsäure)]-(3) Un nouvel acide amine dans les graines de Vigna vexillata Gracilarioside and Gracilamides from the Red Alga <i>Gracilaria </i><i>asiatica</i> Gracilarioside and Gracilamides from the Red Alga <i>Gracilaria </i><i>asiatica</i>