[EN] 4-HYDROXYBUTYRIC ACID DEUTERATED ANALOGS<br/>[FR] ANALOGUES DEUTÉRÉS DE L'ACIDE 4-HYDROXYBUTYRIQUE
申请人:CONCERT PHARMACEUTICALS INC
公开号:WO2012112492A1
公开(公告)日:2012-08-23
This invention relates to novel derivatives of 4-hydroxybutyric acid and prodrugs thereof, and pharmaceutically acceptable salts of the foregoing. This invention also provides pharmaceutical compositions comprising a compound of this invention and the use of such compositions in methods of treating narcolepsy, fibromyalgia, other disorders or conditions that are beneficially treated by improving nocturnal sleep or by administering sodium oxybate.
Competition H(D) Kinetic Isotope Effects in the Autoxidation of Hydrocarbons
作者:Hubert Muchalski、Alexander J. Levonyak、Libin Xu、Keith U. Ingold、Ned A. Porter
DOI:10.1021/ja511434j
日期:2015.1.14
both the primary and secondary isotopeeffects for symmetrical substrates by the use of NMR. Intramolecular competition reactions were carried out on substrates having an increasing number of deuterium atoms at symmetry-related sites. Products that arise from peroxyl radical abstraction at each position of the various substrates reflect the competition rates for H(D) abstraction. The primary KIE for
氢原子转移是许多重要自由基链序列的核心。我们在此报告了一种使用 NMR 测定对称底物的初级和次级同位素效应的方法。在对称相关位点具有越来越多氘原子的底物上进行分子内竞争反应。在各种底物的每个位置上由过氧自由基抽象产生的产物反映了 H(D) 抽象的竞争率。四氢化萘自氧化的主要 KIE 被确定为 15.9 ± 1.4,该值超过了 H(D) 零点能量差异预测的最大值 (∼7),强烈表明过氧自由基对 H 原子的夺取发生在大量的量子力学隧道效应。
Use of Deuterium Labeling Studies to Determine the Stereochemical Outcome of Palladium Migrations during an Asymmetric Intermolecular Heck Reaction
作者:Bronwen M. M. Wheatley、Brian A. Keay
DOI:10.1021/jo071119u
日期:2007.9.1
[GRAPHICS]A series of deuterium labeling experiments showed that Pd migrations during an intermolecular asymmetric Heck reaction between phenyl triflate and various deuterated 2,3-dihydrofurans (2b, 2c, 2d, 2e) occurs exclusively by either syn-1,2-dyotropic shifts or a syn-chain-walking mechanism; no evidence was observed to support anti-1,2-dyotropic shifts or anti-beta-H Pd eliminations during the formation of 6 and 7.
A Convenient Route to the Synthesis of Isotopomeric Dihydro-2(3H)furanones
A general synthetic procedure leading to isotopomeric dihydro-2(3H)furanones (gamma-butyrolactones) containing two, four, or six deuterium atoms has been developed. The labeled dihydro-2(3H)furanones were synthesized in quantitative yield from the saturated diacid C-4 (succinic) or unsaturated diacids C-4 (fumaric, maleic, or acetylendicarboxylic) in the presence of Ru4H4(CO)(8)(PBu3)(4) using a deuterium pressure of 180 bar at 180 degrees C. This methodology was applied to the total synthesis of a hexadeuterated matairesinol lignan: The 3,4-bis[3-methoxy-4-(phenylmethoxy)phenyl]methyl}dihydro-2(3H)furanone-[7,7',8,8',9',9'-D-6] (benzyl-protected matairesinol-D-6) was fully characterized.
Substituted pyridines as PARP1 inhibitors
申请人:Xinthera, Inc.
公开号:US11795173B1
公开(公告)日:2023-10-24
Described herein are tricyclic PARP1 inhibitors and pharmaceutical compositions comprising said inhibitors. The subject compounds and compositions are useful for the treatment of cancer and are of Formula (Ip):