| homotyrosine-containing cyanopeptolins 880 and 960 and anabaenopeptins 908 and 915 from planktothrix agardhii cya 126/8. | two homotyrosine-bearing cyanopeptolins are described from planktothrix agardhii cya 126/8. the compounds feature a common homotyrosine-containing cyclohexadepsipeptide and differ by sulfation of an exocyclically located 2-o-methyl-d-glyceric acid residue. in addition we describe two anabaenopeptins, which contain two homotyrosine residues, one of which is n-methylated. the anabaenopeptins have a common cyclopentapeptide portion and differ in the amino acid linked to it via an ureido bond, argin ... | 2009 | 19115837 |