已经合成了形成不同构象的受约束的基于γ-氨基酸的ababbutin(Gbn)肽。为了合理化侧翼取向对基于四肽的超分子有机框架和形态实体的影响,Gbn引入了杂合肽Boc-Gbn-Aib-Aaa-Aib-OMe(其中Aaa =肽1的Phe(F),Leu(L )对于肽2和Tyr(Y)肽3)通过在第三位置改变氨基酸合成。通过2D NMR光谱探测溶液状态的双折叠构象(C 12 / C 10 H键合),以支持DMSO- d 6滴定和VT NMR实验。肽1-3采用C12 / C 10型H键合双折叠构型,处于晶体状态。此外,不同的超分子构架是由1-3肽的第三个残基侧链的修饰和定向产生的。通过修饰四肽的侧链主链可实现溶剂诱导的肽1-3的形态学多样性,已通过各种显微镜(SEM和AFM)研究对其进行了研究。基于Gbn的肽1-3具有显着的形态和超分子堆积特性,这与基于加巴喷丁(Gpn)的类似肽完全不同。
Process for the preparation of amino methyl cyclo alkane acetic acids
申请人:Kuppuswamy Nagarajan
公开号:US20060149099A1
公开(公告)日:2006-07-06
This invention relates to an improved process for the preparation of amino methyl cyclo alkane acetic acids. This invention particularly relates to an improved process for the preparation of gabapentin (which is chemically known as 1-aminomethyl-1-cyclohexaneacetic acid), which is a very well known agent useful for the treatment of epilepsy and other cerebral disorders. In the chemical series of 1-amino methyl cyclo alkane-1-acetic acids, Gabapentin, which is 1-amino methyl cyclo hexane-1-acetic acid has been developed as a drug having anti convulsive properties.
作者:Maruthi Konda、Tapas Ghosh、Shaikh M. Mobin、Apurba K. Das
DOI:10.1039/c8nj05009k
日期:——
A dimer-assembly driven supramolecular double helix is observed for the gababutin-based short peptide sequence and this architecture exhibits electrochemical features.
The present invention is concerned with new cyclic amino acids and with the preparation thereof.
本发明涉及新的环状氨基酸及其制备方法。
Process suitable for industrial scale production of gabapentin
申请人:Zhejiang Chiral Medicine Chemicals Co., Ltd.
公开号:US07442834B2
公开(公告)日:2008-10-28
This invention relates to an improved process for the preparation of substantially pure, stable anhydrous gabapentin. Thus, cyclohexane 1,1-diacetic acid monoamide is first treated with NaOH/NaClO to form 3,3-pentamethylenebutyrolactam, which is treated with aqueous HCl solution under reflux to provide gabapentin HCl salt, which is then neutralized with NaOH followed by a dehydration step to provide substantially pure, storage-stable, pharmaceutical grade gabapentin.