Preparation of (S)-piperazine-2-carboxylic acid, (R)-piperazine-2-carboxylic acid, and (S)-piperidine-2-carboxylic acid by kinetic resolution of the corresponding racemic carboxamides with stereoselective amidases in whole bacterial cells
摘要:
Whole bacterial cells containing stereospecific amidases were used for the kinetic resolution of racemic piperazine-2-carboxamide and piperidine-2-carboxamide to (S)- and (R)-piperazine-2-carboxylic acid, and (S)-piperidine-2-carboxylic acid, respectively. (S)-Piperazinecarboxylic acid dihydrochloride produced with the biocatalysts Klebsiella terrigena DSM 9174 had an ee value of 99.4% (41% yield), and the ee value of (R)-piperazinecarboxylic acid dihydrochloride obtained with Burkholderia sp. DSM 9925 was 99.0% (22% yield). Using Pseudomonas fluorescens DSM 9924 (S)-piperidine-2-carboxylic acid with an ee value of 97.3% (20% yield) was isolated. (C) 1997 Elsevier Science Ltd.
Solid-phase synthesis and biological evaluation of piperazine-based novel bacterial topoisomerase inhibitors
作者:Thomas Flagstad、Mette T. Pedersen、Tim H. Jakobsen、Jakob Felding、Tim Tolker-Nielsen、Michael Givskov、Katrine Qvortrup、Thomas E. Nielsen
DOI:10.1016/j.bmcl.2021.128499
日期:2022.2
There is an emerging global need for new and more effective antibiotics against multi-resistant bacteria. This situation has led to massive industrial investigations on novelbacterialtopoisomeraseinhibitors (NBTIs) that target the vital bacterial enzymes DNA gyrase and topoisomerase IV. However, several of the NBTI compound classes have been associated with inhibition of the hERG potassium channel
全球迫切需要新的更有效的抗生素来对抗多重耐药菌。这种情况导致了针对重要细菌酶 DNA 促旋酶和拓扑异构酶 IV 的新型细菌拓扑异构酶抑制剂 (NBTI) 的大规模工业研究。然而,一些 NBTI 化合物类别与抑制 hERG 钾通道有关,hERG 钾通道是心律失常的不良原因,通过漫长的合成路线挑战药物化学工作。我们在此提出了一种固相策略,可快速促进一类有前途的新型 NBTI 的化学合成。合成了一个概念验证文库,该文库能够通过支架替代调节 hERG 亲和力和抗菌活性。
[EN] HETEROCYCLIC COMPOUNDS FOR THE TREATMENT OF ABNORMAL CELLULAR PROLIFERATION<br/>[FR] COMPOSÉS HÉTÉROCYCLIQUES POUR LE TRAITEMENT D'UNE PROLIFÉRATION CELLULAIRE ANORMALE
申请人:G1 THERAPEUTICS INC
公开号:WO2019136244A1
公开(公告)日:2019-07-11
This invention is in the area of heterocyclic-based compounds for the treatment of disorders involving abnormal cellular proliferation, including but not limited to tumors and cancers.
这项发明涉及杂环基化合物领域,用于治疗涉及异常细胞增殖的疾病,包括但不限于肿瘤和癌症。
NOVEL 1,2,4-TRIAZOLE DERIVATIVES AND PROCESS OF MANUFACTURING THEREOF
申请人:Fehrentz Jean-Alain
公开号:US20090239877A1
公开(公告)日:2009-09-24
The invention provides 1,2,4-triazole compounds, compositions containing those compounds, methods of treating diseases and/or disorders with those compounds and processes of manufacturing 1,2,4-triazole compounds.
The present invention is related to piperazine-2-carboxamide derivatives of formula (I) for the treatment and/or prophylaxis of preterm labor, premature birth, dysmenorrhea and for stopping labor prior to cesarean delivery. Wherein A, X, Y, R
1
and R
2
are as defined in the description.