化学学报 ›› 2008, Vol. 66 ›› Issue (2): 257-265. 上一篇    下一篇

研究论文

含杂环残基及非经典环化RGD相关肽的合成

韩香,邱传亮,龚喜,杨潇骁,王德心   

  1. (中国医学科学院中国协和医科大学药物研究所 北京 100050)
  • 投稿日期:2006-11-01 修回日期:2007-06-01 发布日期:2008-01-28
  • 通讯作者: 王德心

Synthesis of Heterocyclic Residue Containing and Backbone Atypically Cyclized RGD Related Peptides

HAN Xiang; QIU Chuan-Liang; GONG Xi; YANG Xiao-Xiao; WANG De-Xin   

  1. (Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050)
  • Received:2006-11-01 Revised:2007-06-01 Published:2008-01-28
  • Contact: WANG De-Xin

以不同的非天然结构代替RGD (Arg-Gly-Asp, 精氨酰甘氨酰天冬氨酸)相关肽中的Arg残基, 共合成了11个改构的RGD相关肽. 其中18为杂环残基肽, 910为局部杂环肽, 11为主链环肽. 在合成方式上, 产物18由传统溶液法制备, 911经固相法制备. 全部产物均由MS分析证明结构. 通过本研究, 为探索新型环肽合成提供了有价值的实验基础.

关键词: 杂环肽, 非经典环化肽, RGD类似物, 固相合成

Eleven modified RGD (Arg-Gly-Asp) peptides were synthesized by using unnatural building blocks as the surrogates for Arg residues. Three kinds of backbone structures were concerned in present products: (1) thiazolino or oxazolino residues were used instead of Arg in 18; (2) Arg was substituted by a locally cyclized structure between α-amino and ω-amino groups of Lys with different bridge structures in 9 and 10; (3) globally cyclized RGD analogue with ether bond bridge was used in 11. Products 18 were prepared by a classical solution procedure, while 911 were constructed on a solid support. All products were characterized by an MS analysis. It is valuable that the protocols related in present paper would afford some feasible ways to synthesize novel cyclo peptide derivatives.

Key words: hetero-cyclo peptide, atypical cyclopeptide, RGD analogue, solid-phase synthesis