The invention disclosed herein relates to the novel method for the preparation of cyclic peptides, wherein a linear peptide is reacted, in solution in a polar organic solvent, with an insoluble, resin-bound carboxyl-activating reagent such as resin-bound isopropylcarbodiimide. Cyclic peptides thus obtained have been found to retain biological activity characteristic of their linear counterparts, with increased biostability; the cyclic peptide, Gramicidin S, which can be prepared by this method, is a valuable antibacterial.
本发明涉及一种新型的环肽制备方法,其中线性肽在极性有机溶剂中与不溶性
树脂结合的
羧酸活化试剂(如结合异丙基脒)反应。由此得到的环肽保留了其线性对应物的
生物活性,并具有增强的
生物稳定性;通过该方法可以制备出一种有价值的抗菌剂,即环肽格拉米酸S。