The present invention provides a method for the preparation of N-(1-oxopentyl)-N-[[2′-(1H-tetra-zol-5-yl)[1,1′-biphenyl]-4-yl]methyl]-L-valine (Valsartan) which comprises; treating N-[[2′-(1-triphenylmethyl-tetra-zol-5-yl)biphenyl-4-yl]methyl]-L-valine methyl ester (X) with oxalic acid or its hydrates in a solvent to produce N-[[2′-(1-triph-enylmethyl-tetrazol-5-yl)biphenyl-4-yl]methy]-L-valine methyl ester oxalate (Xa) and treating the compound (Xa) with a base in a solvent followed by reacting with valeryl chloride in presence of base in a solvent to produce N-[[2′-(1-triphenylmethyl-tetra-=zol-5-yl)[1,1′biphenyl]-4-yl]methyl]-N-valeryl-L-valine methyl ester (XI), de-protecting the compound (XI) using anhydrous acidic conditions to produce N-(1-oxopentyl)-N-[[2′-(1-H-tetrazol-5-yl)[1,1′biphenyl]-4-yl]methyl-L-valine methyl ester (V) followed by
本发明提供了一种制备缬沙坦(Valsartan)的方法,包括以下步骤:将N-[[2'-(1-三苯甲基-四唑-5-基)[1,1'-联苯]-4-基]甲基]-L-缬氨酸甲酯(X)与草酸或其水合物在溶剂中反应,生成N-[[2'-(1-三苯甲基-四唑-5-基)联苯-4-基]甲基]-L-缬氨酸甲酯草酸酯(Xa),然后将化合物(Xa)与溶剂中的碱反应,随后在溶剂中的碱存在下与戊酰氯反应,生成N-[[2'-(1-三苯甲基-四唑-5-基)[1,1'联苯]-4-基]甲基]-N-戊酰-L-缬氨酸甲酯(XI),用无水酸性条件去保护化合物(XI),生成N-(1-氧代戊基)-N-[[2'-(1-H-四唑-5-基)[1,1'联苯]-4-基]甲基]-L-缬氨酸甲酯(V),最后在溶剂中用碱处理,生成缬沙坦。
Iterative Optimization and Structure–Activity Relationship Studies of Oseltamivir Amino Derivatives as Potent and Selective Neuraminidase Inhibitors <i>via</i> Targeting 150-Cavity
作者:Han Ju、Lingxin Hou、Fabao Zhao、Ying Zhang、Ruifang Jia、Laura Guizzo、Anna Bonomini、Jiwei Zhang、Zhen Gao、Ruipeng Liang、Chiara Bertagnin、Xiujie Kong、Xiuli Ma、Dongwei Kang、Arianna Loregian、Bing Huang、Xinyong Liu、Peng Zhan
DOI:10.1021/acs.jmedchem.1c01970
日期:2022.9.8
With our continuous endeavors in seeking neuraminidase (NA) inhibitors, we reported herein three series of novel oseltamivir amino derivatives with the goal of exploring the druggable chemical space inside the 150-cavity of influenza virus NAs. Among them, around half of the compounds in series C were demonstrated to be better inhibitors against both wild-type and oseltamivir-resistant group-1 NAs
随着我们不断努力寻找神经氨酸酶 (NA) 抑制剂,我们在此报告了三个系列的新型奥司他韦氨基衍生物,目的是探索流感病毒 NA 150 腔内的可药化化学空间。其中,C 系列中大约一半的化合物被证明是比奥司他韦羧酸盐 (OSC) 更好的对野生型和奥司他韦耐药组 1 NAs 的抑制剂。值得注意的是,在细胞试验中,化合物12d、12e、15e和15i与 OSC 相比,对 H1N1、H5N1 和 H5N8 病毒表现出更强或等效的抗病毒活性。此外,化合物12e和15e在人肝微粒体 (HLM) 中表现出高代谢稳定性和对主要细胞色素 P450 (CYP) 酶的低抑制作用,以及低急性/亚急性毒性和一定的体内抗病毒功效。此外,还进行了药代动力学 (PK) 和分子对接研究。总体而言,12e和15e作为抗流感候选药物具有很大潜力,值得进一步研究。