Diastereoselective Solution and Multipin-Based Combinatorial Array Synthesis of a Novel Class of Potent Phosphinic Metalloprotease Inhibitors
作者:Anastasios Makaritis、Dimitris Georgiadis、Vincent Dive、Athanasios Yiotakis
DOI:10.1002/chem.200204456
日期:2003.5.9
preparation of a novel class of isoxazole-containing phosphinic peptides (peptides 5 a-i). Solid-phase version of this strategy was efficiently achieved on multipin solid technology, by developing a new protocol for the coupling of P-unprotected dipeptidic blocks with solid supported amino acids in a quantitative and diastereoselective manner. Optimization of dipolar cycloadditions onto pin-embodied
以高收率和光学纯度(3 ad单元)实现了含有三键的新膦肽肽结构单元的溶液相合成和拆分。通过NMR研究明确地确定了目标化合物的绝对构型。这些嵌段的组装后多样化策略是通过各种原位制备的腈氧化物的1,3-偶极环加成反应开发的。该策略导致快速有效地非对映选择性地制备了新型的含异恶唑的次膦酸肽(肽5 ai)。通过开发一种新的方案,可以定量和非对映选择性地将P-未保护的二肽嵌段与固体负载的氨基酸偶联,从而在多针固体技术上有效地实现了该策略的固相形式。偶极次膦肽上偶极环加成反应的优化使得可以方便地制备这种新型的伪肽。如通过RP-HPLC测定,以高产率和纯度获得粗品次膦肽(9ak)。这些肽中的某些的抑制分析表明,它们在效力方面表现出非常强的MMP抑制剂的性能,与以前报道的次膦酸酯肽相媲美(K(i)在几nM范围内)。