hexa-O-acetyl-D-lactal 、
cyclo<-Phe-D-Pro-Phe-Ala-Ahc-Phe-> 在
N-碘代丁二酰亚胺 作用下,
以
乙腈 为溶剂,
反应 144.0h,
以67%的产率得到cyclo<-L-Phenylalanyl-D-prolyl-L-phenylalanyl-L-alanyl-O-(2',3',4',6'-tetra-O-acetyl-β-D-galactopyranosyl)-(1-4)-O-(3,6-di-O-acetyl-2-desoxy-2-iod-α-D-mannopyranosyl)-(1-6)-L-(2-amino-6-hydroxy)caproyl-L-phenylalanyl->