Synthesis of a 7-Deazaguanine-Functionalized β-Amino Acid: Improved Specificity of β-Peptide Helix Organization
作者:Pradip Chakraborty、Arndt M. Brückner、Ulf Diederichsen
DOI:10.1002/ejoc.200501003
日期:2006.5
Nucleobase-functionalized β-peptides are a suitable scaffold for the construction of well-defined tertiary structures organized by nucleobase pair recognition. Since guanine-rich oligomers are especially known to form higher aggregates, an enantiomerically pure 7-deazaguanine (zG)-functionalized nucleo-β3-amino acid was synthesized from a β-lactam derivative as a key intermediate. Incorporated into
核碱基功能化的 β-肽是构建由核碱基对识别组织的明确三级结构的合适支架。由于富含鸟嘌呤的低聚物尤其会形成更高的聚集体,因此从作为关键中间体的 β-内酰胺衍生物合成了对映异构纯的 7-脱氮鸟嘌呤 (zG) 功能化的核-β3-氨基酸。结合到 β-肽 14-螺旋中,可以减少聚集现象并提高识别选择性。碱基对介导的螺旋识别的证据是通过温度依赖性 UV 和 CD 光谱获得的。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)