Cyclodepsipeptides of the enniation-, PF1022-, and verticilide-family represent a diverse class of highly interesting naturalproducts with respect to their manifold biological activities. However, until now no stepwise solid-phase synthesis has been accomplished due to the difficult combination of N-methyl amino acids and hydroxycarboxylic acids. We report here the first stepwise solid-phase synthesis
The first structure-activity relationships of the anthelmintic cyclooctadepsipeptide PF1022A have been established via a systematic exchange of the leucine residues by a series of related N-alkylated amino acids. The data presented strongly suggest that (L)-N-methyl-leucine is crucial for high in vivo activity. (C) 1998 Elsevier Science Ltd. All rights reserved.
METHOD FOR THE SYNTHESIS OF CYCLIC DEPSIPEPTIDES
申请人:Bayer Animal Health GmbH
公开号:US20210130315A1
公开(公告)日:2021-05-06
The present invention relates to a method for the synthesis of cyclic depsipeptides, in particular emodepside, from the open form.