A Convergent Solution-Phase Synthesis of the Macrocycle Ac-Phe-[Orn-Pro-<scp>d</scp>-Cha-Trp-Arg], a Potent New Antiinflammatory Drug
作者:Robert C. Reid、Giovanni Abbenante、Stephen M. Taylor、David P. Fairlie
DOI:10.1021/jo034228r
日期:2003.5.1
few cyclic peptides have reached the pharmaceutical marketplace during the past decade, most produced through fermentation rather than made synthetically. Generally, this class of compounds is synthesized for research purposes on milligram scales by solid-phase methods, but if the potential of macrocyclic peptidomimetics is to be realized, low-cost larger scale solution-phase syntheses need to be devised
在过去的十年中,相对较少的环肽进入了制药市场,大多数是通过发酵而不是合成制备的。通常,这类化合物是通过固相方法以毫克级为研究目的合成的,但是如果要实现大环肽模拟物的潜力,则需要设计和优化低成本的大规模溶液相合成方法,以提供足够的用于临床前,临床和商业用途的数量。在这里,我们描述了人类C5a受体的第一个报道的高效,选择性和口服活性拮抗剂的廉价,中等规模的溶液相合成方法。这种化合物Ac-Phe [Orn-Pro-d-Cha-Trp-Arg],称为3D53,是人血浆蛋白C5a的大环肽模拟物,在许多人类疾病的动物模型中显示出出色的抗炎活性。在收敛方法中,首先通过使用混合酸酐法的高产率溶液相偶联制备了两个三肽片段Ac-Phe-Orn(Boc)-Pro-OH和Hd-Cha-Trp(For)-Arg-OEt偶联它们以得到线性六肽,在脱保护后,其可从市售氨基酸中以38%的总产率获得。HPLC纯化后,使用B