The present invention discloses a new and improved process for the preparation of the tetrapeptide H-Tyr-D-Ala-Phe(F)-Phe-NH2 that is a peptide of formula (I), or a pharmaceutically acceptable salt thereof, as well as new intermediates in the preparation thereof. The novel process is a fragment synthesis and suitable for large-scale production.
本发明揭示了一种新的、改进的四肽H-Tyr-D-Ala-Phe(F)-Phe-NH2的制备方法,该四肽的
化学式为(I),或其药学上可接受的盐,以及其制备中的新中间体。这种新的方法是一种片段合成方法,适用于大规模生产。