tumor cell apoptosis in various cancercelllines, had previously been reported. Moreover, reports have revealed that the introduction of amino acid to betulinic acid could improve selectivecytotoxicity as well as water solubility. Thus, a series of novel TBA amino acid and dipeptide derivatives were designed, synthesized and screened for selectivecytotoxic activity against five cancercell lines
[EN] 5-(7H-PYRROLO[2,3-d]PYRIMIDIN-4-YL)-5-AZASPIRO[2.5]OCTANE-8-CARBOXYLIC ACID DERIVATIVES AS NOVEL JAK KINASE INHIBITORS<br/>[FR] DÉRIVÉS D'ACIDE 5-(7H-PYRROLO[2,3-D]PYRIMIDIN-4-YL)-5-AZASPIRO[2,5] OCTANE-8-CARBOXYLIQUE EN TANT QUE NOUVEAUX INHIBITEURS DE KINASE JAK
申请人:LEO PHARMA AS
公开号:WO2018141842A1
公开(公告)日:2018-08-09
The present invention relates to a compound according to formula (I), wherein X represents NH or O; n is an integer selected from 1-3; Y represents a bond, -C(O)O-*, -C(O)OR3-* or –C(O)NHR3-*; W is selected from the group consisting of phenyl, pyridyl, (C3-C7)cycloalkyl and 4-6 membered heterocycloalkyl; or pharmaceutically acceptable salts, hydrates, or solvates thereof. The invention relates further to said compounds for use in therapy, to pharmaceutical compositions comprising said compounds, to methods of treating diseases, with said compounds, and to the use of said compounds in the manufacture of medicaments.
structure and stereochemistry of polyoximic acid, a degradation product of polyoxins, was originally designated as trans-3-ethylidene-L-azetidine-2-carboxylic acid. However, total synthesis revealed that the correct structure was in fact cis-3-ethylidene-L-azetidine-2-carboxylic acid, which was confirmed by X-ray crystallography. The synthesis of the trans-isomer was also done and its identity was confirmed
聚肟酸是一种多氧化合物的降解产物,其结构和立体化学最初被命名为反式-3-亚乙基-L-氮杂环丁烷-2-羧酸。然而,全合成表明正确的结构实际上是顺-3-亚乙基-L-氮杂环丁烷-2-羧酸,这通过X射线晶体学证实。反式异构体的合成也已完成,其身份也通过 X 射线分析得到证实。构建四元环的关键步骤是铑催化的类卡宾插入到β-氨基酸衍生物的N 2 H 键中。通过进行 Horner-Emmons-Wadsworth 或 Wittig 反应以分别产生反式和顺式异构体来控制外双键的立体选择性。温雷布' s 酰胺用作潜在的甲基,用于分离反式和顺式混合物。通过广泛的 2D NMR 研究也证实母体多肟中多肟酸的双键立体化学是顺式的。 关键词:重氮插入,...
(2<i>R</i>)- and (2<i>S</i>)-3-Fluoroalanine and Their <i>N</i>-Methyl Derivatives: Synthesis and Incorporation in Peptide Scaffolds
作者:Hamid R. Hoveyda、Jean-François Pinault
DOI:10.1021/ol062434q
日期:2006.12.1
A convergent synthetic methodology has been developed to access both (2S)- and (2R)-3-fluoroalanine and their corresponding N-methyl analogues, in optically pure form, through a common oxazolidinone intermediate that can be obtained from L- or D-serine. In addition, a procedure for incorporation of these unnatural amino acids in peptide scaffolds is also disclosed herein that minimizes the occurrence