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环(L-天冬氨-L-脯)二肽的合成
Synthesis of cyclodipeptide cyclo(L-Asp-L-Pro)
【摘要】 环二肽在自然界及天然产物中广泛存在,由于其结构特殊,使得环二肽成为药物化学中一个重要的药效团,许多环二肽具有强的生理活性.以N-叔丁氧羰基-L-天冬氨酸-β-苄酯和L-脯氨酸甲酯盐酸盐为原料,经DCC缩合得直链二肽,再经HCl/Et2O脱Boc保护,弱碱性条件下成环,最后Pd/C催化氢解得环(L-天冬氨-L-脯)二肽.结构经ESI-MS、IR、1HNMR、13CNMR等表征.
【Abstract】 Cyclic dipeptides are quite common in nature and many natural products . They are an important pharmacophore in medicinal chemistry because of their stable structural characterstics. Many cyclic dipeptides have a wide range of biological activities. Cyclo(L-Asp-L-Pro) were synthesized from protected N-tertbutyloxycarbonyl-L-aspartic acid-β-benzylester and L-proline methyl ester hydrochloride via DCC condesation, deprotection of tertbutyloxycarbonyl group with aether solution of hydrogen chloride, cyclization with NaHCO3 solution and Pd/C catalytic hydrogenation. The structure was identified by ESI-MS 、IR、1H NMR and 13C NMR.
- 【文献出处】 海南师范大学学报(自然科学版) ,Journal of Hainan Normal University(Natural Science) , 编辑部邮箱 ,2007年01期
- 【分类号】O629.72
- 【被引频次】7
- 【下载频次】451