Enzyme mediated concise synthesis of NH-Fmoc-S-Trityl-Cα-Methyl Cysteine
作者:Hari Kiran Kotapati、Daniel R. Lawrence、Shelby O. Thames、Douglas S. Masterson
DOI:10.1016/j.tetlet.2016.08.052
日期:2016.9
orthogonally protected Cα-Methyl Cysteine has been developed. Curtius rearrangement of malonate halfester from PLE hydrolysis (J. Pept. Sci. 2008, 14, 1151; J. Org. Chem. 2003, 68, 5403) and simultaneous Fmoc protection using Titanium(IV) Isopropoxide yielded Fmoc protected amino ester that is then transformed into (R)-NH-Fmoc-S-Trityl-Cα-Methyl Cysteine in three steps. For the synthesis of the S enantiomer of
Investigation of Cysteine as an Activator of Side-Chain N→S Acyl Transfer and Tail-to-Side-Chain Cyclization
作者:Derek Macmillan、Durbis Castillo-Pazos
DOI:10.1055/s-0036-1590797
日期:2017.9
N→S Acyltransfer is a popular method for the postsynthesis production of peptide C α-thioesters for use in native chemical ligation and for the synthesis of head-to-tail cyclic peptides. Meanwhile thioesterformation at the side chain of aspartic or glutamic acids, leading to tail-to-side-chain-cyclized species, is less common. Herein we explore the potential for cysteine to function as a latent thioester
N→S 酰基转移是合成后合成肽 C α-硫酯的常用方法,用于天然化学连接和头对尾环肽的合成。同时,在天冬氨酸或谷氨酸的侧链上形成硫酯,导致尾侧链环化物种,不太常见。在此,我们探索了半胱氨酸附加到谷氨酸侧链时作为潜在硫酯发挥作用的潜力。通过研究 C 末端 β-丙氨酸作为增加链长的模型获得的初步见解最终应用于肽大环化。我们的结果强调了在谷氨酸侧链上增加的酰基转移障碍,并表明半胱氨酸本身促进的缓慢反应如何通过立体电子环境的微调来加速。
TRIAZOLE-CROSSLINKED AND THIOETHER-CROSSLINKED PEPTIDOMIMETIC MACROCYCLES
申请人:Aileron Therapeutics, Inc.
公开号:US20130210745A1
公开(公告)日:2013-08-15
Provided herein are peptidomimetic macrocycles and methods of using such macrocycles for the treatment of disease.
本文提供了肽类模拟大环化合物以及利用这些大环化合物治疗疾病的方法。
[EN] TRIAZOLE-CROSSLINKED AND THIOETHER-CROSSLINKED PEPTIDOMIMETIC MACROCYCLES<br/>[FR] MACROCYCLES PEPTIDOMIMÉTIQUES RÉTICULÉS PAR TRIAZOLE ET PAR THIOÉTHER
申请人:AILERON THERAPEUTICS INC
公开号:WO2013123267A1
公开(公告)日:2013-08-22
Provided herein are peptidomimetic macrocycles and methods of using such macrocycles for the treatment of disease.
本文提供了肽类模拟大环和使用这种大环治疗疾病的方法。
BIS-SULFHYDRYL MACROCYCLIZATION SYSTEMS
申请人:Aileron Therapeutics, Inc.
公开号:US20160095896A1
公开(公告)日:2016-04-07
The present invention provides novel peptidomimetic macrocycles and methods for their preparation and use, as well as amino acid analogs and macrocycle-forming linkers, and kits useful in their production.