Solid-phase synthesis of cyclic peptide chitinase inhibitors: SAR of the argifin scaffold
作者:Mark J. Dixon、Amit Nathubhai、Ole A. Andersen、Daan M. F. van Aalten、Ian M. Eggleston
DOI:10.1039/b815077j
日期:——
Asp residue to the solidsupport and assembly of the linear peptide chain by Fmoc SPPS prior to cyclisation and side-chain manipulation on-resin. Introduction of the key N-methyl carbamoyl-substituted Arg side chain is achieved viaderivatisation of a selectively protected Orn residue, prior to cleavagefrom the resin and side-chain deprotection. A severe aspartimide side-reaction observed upon final
一种新型、高效、全固相合成精氨酸据报道,一种天然产物环状五肽几丁质酶抑制剂。该合成的特点是在树脂上进行环化和侧链操作之前,将正交保护的 Asp 残基附着到固体支持物上,并通过 Fmoc SPPS 组装线性肽链。在从树脂上裂解和侧链脱保护之前,通过选择性保护的 Orn 残基的衍生化来引入关键的N-甲基氨基甲酰基取代的 Arg 侧链。通过使用新型水性酸解程序,避免了最终脱保护时观察到的严重天冬酰亚胺副反应。通过一系列的制备证明了合成的灵活性精氨酸根据与代表性家族 18 几丁质酶复合的天然产物的 X 射线结构设计的类似物。
An efficient synthesis of argifin: A natural product chitinase inhibitor with chemotherapeutic potential
作者:Mark J. Dixon、Ole A. Andersen、Daan M.F. van Aalten、Ian M. Eggleston
DOI:10.1016/j.bmcl.2005.07.068
日期:2005.11
The firstsynthesis of the cyclopentapeptide family 18 chitinaseinhibitor argifin has been achieved by a combination of solid phase and solution chemistry. Synthetic argifin is a nanomolarinhibitor of chitinase B1 from Aspergillus fumigatus and the high-resolution X-ray structure of the synthesized material in complex with the same enzyme is identical to that previously obtained for the natural product