The purpose of the present invention is to provide a novel method for producing cereulide and a derivative thereof; an intermediate for cereulide; and a novel cereulide derivative. A novel didepsipeptide, a novel tetradepsipeptide, a novel octadepsipeptide and a novel dodecadepsipeptide are prepared. A linear precursor of cereulide or a derivative thereof, which is composed of any one of the novel depsipeptides, is cyclized by forming an intramolecular amide bond.
本发明的目的是提供一种生产谷
氨酰胺和其衍
生物的新方法;一种谷
氨酰胺的中间体;以及一种新的谷
氨酰胺衍
生物。制备了一种新的二肽、一种新的四肽、一种新的八肽和一种新的十二肽。由任何一种新的肽组成的谷
氨酰胺或其衍
生物的线性前体,通过形成分子内酰胺键而环化。