在SPPS中使用的β-糖-氨基酸的适当保护的乙基
István Varga1,2, Viktória Goldschmidt Gőz3, István Pintér1
1Laboratory of Structural Chemistry and Biology, Institute of Chemistry, Eötvös Loránd University, Pázmány P. Stny. 1/A, Budapest, 1117, Hungary.
Amino acids
|June 20, 2023
概括
我们开发了一种更快的4-5步合成糖氨基酸 (β-SAA),如Fmoc-GlcAPC-OH. 这种改进的方法可以实现高效的合成和可调节的新生物材料的水友性.
科学领域:
- 有机化学 有机化学
- 药用化学 医学化学
- 生物化学 生物化学
背景情况:
- 基于D-glucosamine-1-carboxylic acid的β-糖氨基酸 (β-SAA) 的传统合成涉及九个步骤和低产量.
- 现有的β-SAA合成方法效率低下,阻碍了它们在类研究中的更广泛应用.
研究的目的:
- 开发一种改进和更有效的β-SAA的合成,特别是Fmoc-GlcAPC-OH和Fmoc-GlcAPC(Ac) -OH.
- 证明这些新型β-SAA在固相合成 (SPPS) 中的实用性,并探索它们的稳定性和修饰性.
主要方法:
- 在4-5个步骤中简化合成Fmoc-GlcAPC-OH和Fmoc-GlcAPC(Ac) -OH.
- 使用1H NMR的活性和胺键形成的表征.
- 在各种Fmoc裂变条件下评估乙保护组的稳定性.
- 使用Fmoc-GlcAPC(Ac) -OH用于模型合成的SPPS协议的设计和实施.
- 使用Zemplén方法合成的脱乙化.
主要成果:
- 与传统的九步协议相比,成功合成了Fmoc-GlcAPC-OH和Fmoc-GlcAPC(Ac) -OH,步骤 (4-5) 显著减少.
- 确认有效的活性和胺键形成.
- 在Fmoc裂变过程中,在高度 (高达40%) 的piperidine下,乙保护组的稳定性被证明是令人满意的.
- 在SPPS中实现了高合效率,用于生产含β-SAAs的模型.
- 通过Zemplén脱乙烯化,展示了通过Zemplén脱乙烯化微调水友性后合成的能力.
结论:
- 这种新型合成提供了一条更有效的途径,以获得有价值的β-SAA.
- 这些β-SAA是稳定且与SPPS兼容的,允许创建复杂的结构.
- 泽普伦脱乙烯化提供了一种合成后修改的方法,增强了含有β-SAA的多功能性.
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