报道了一系列作用于电压门控钙通道 (Ca v α2δ-1) α2δ-1 亚基的新系列哌嗪基喹唑啉-4-(3 H )-one 衍生物的合成和药理活性。探索了微摩尔 HTS 命中的不同位置,并获得了在 quinazolin-4-(3 H )-one 支架的位置 3 和 3-methyl-piperazin-1-yl- 中含有小烷基的化合物的最佳活性或位置 2 的 3,5-二甲基-哌嗪-1-基-丁基。活性显示在位置 2 的链的R对映异构体中,并且几个 eutomers 达到个位数纳摩尔亲和力。中央支架的最终修饰以降低亲脂性提供了吡啶并[4,3- d]pyrimidin-4(3 H )-one 16RR ,它对 Ca v α2δ-1 和 Ca v α2δ-2表现出高选择性,这可能与其在小鼠中比普瑞巴林提高的镇痛功效-安全比有关。
An evaluation of the substrate specificity and asymmetric synthesis potential of the cloned <scp>L</scp>-lactate dehydrogenase from <i>Bacillus</i><i>stearothermophilus</i>
作者:Daniel Bur、Marcel A. Luyten、Hla Wynn、Louis R. Provencher、J. Bryan Jones、Marvin Gold、James D. Friesen、Anthony R. Clarke、J. John Holbrook
DOI:10.1139/v89-161
日期:1989.6.1
assure its plentiful supply. Its specificity for keto acid substrates possessing straight- and branched-chain alkyl, cyclopropyl, or phenyl groups has been evaluated in preparative and kinetic terms, and compared with that of the mammalian pig heart enzyme (PHLDH). The specificities of BSLDH and PHLDH are similar, with branched alkyl-chain keto acids being poor substrates for both enzymes. Keywords: enzymes
作者:Alois Fürstner、Melanie Bonnekessel、Jarred T. Blank、Karin Radkowski、Günter Seidel、Fabrice Lacombe、Barbara Gabor、Richard Mynott
DOI:10.1002/chem.200700926
日期:2007.10.26
exquisitely selective ring closing alkyne metathesis reaction (RCAM) catalyzed by the molybdenum tris-amido complex 20 activated in situ with CH2Cl2. The resulting cyclic enyne 76 was subjected to a ruthenium catalyzed trans-hydrosilylation/proto-desilylation tandem. Although [Cp*Ru(MeCN)3]PF6 had previously been recommended as catalyst of choice for trans-hydrosilylation reactions of internal alkynes
Oxidase‐catalyzed kinetic resolution is important for the production of enantiopure 2‐hydroxycarboxylic acids (2‐HAs), which are versatile building blocks for the synthesis of many significant compounds. However, in contrast to that of (R)‐2‐HAs, the production of (S)‐2‐HA is challenging because of the lack of related oxidases. Herein, suitable enzymes were screened systematically through the analysis
[EN] INDANE AND INDOLINE DERIVATIVES AND THE USE THEREOF AS SOLUBLE GUANYLATE CYCLASE ACTIVATORS<br/>[FR] DÉRIVÉS D'INDANE ET D'INDOLINE ET LEUR UTILISATION EN TANT QU'ACTIVATEURS DE LA GUANYLATE CYCLASE SOLUBLE
申请人:NOVARTIS AG
公开号:WO2016001875A1
公开(公告)日:2016-01-07
The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof; a method for manufacturing the compounds of the invention, and its therapeutic uses. The present invention further provides a combination of pharmacologically active agents and a pharmaceutical composition.
Selective Reductions. 59. Effective Intramolecular Asymmetric Reductions of α-, β-, and γ-Keto Acids with Diisopinocampheylborane and Intermolecular Asymmetric Reductions of the Corresponding Esters with <i>B</i>-Chlorodiisopinocampheylborane
作者:P. Veeraraghavan Ramachandran、Sangeeta Pitre、Herbert C. Brown
DOI:10.1021/jo025594y
日期:2002.7.1
stereochemistry of the products obtained from the intramolecular asymmetric reduction of a series of ketoacids with (-)-diisopinocampheylborane and intermolecular asymmetric reduction of the corresponding series of ketoesters with (-)-B-chlorodiisopinocampheylborane ((-)-DIP-Chloride) has been made. The stereochemistry of the hydroxy acidsfrom the reduction of ketoacids is dependent only on the enantiomer