The present invention relates to new substituted ethanolamine adrenergic receptor modulators, pharmaceutical compositions thereof, and methods of use thereof.
本发明涉及新的取代乙醇胺肾上腺素受体调节剂,其药物组成物以及使用方法。
Solid-state NMR investigations on urea inclusion compounds: Order and dynamics of 1,6-dibromohexane
作者:Xiaorong Yang、Klaus Müller
DOI:10.1016/j.molstruc.2006.07.031
日期:2007.4
contributions, such as overall molecular fluctuations and lateral motions, also contribute to spin relaxation. The molecular behaviour of 1,6-dibromohexane in urea is completely different from that reported for the long chain analogues or for n -alkanes where typically unhindered overall rotational motions of the guests in their all-trans conformation around the urea channel long axis are discussed. The
摘要 利用多核固态核磁共振光谱研究了1,6-二溴己烷在其尿素包合物中的分子性质。首次进行了 13 C CP/MAS 和 1 H MAS NMR 研究(线形、自旋晶格弛豫测量)以探测客体动力学和构象顺序。变温 2 H NMR 研究包括线形分析以及自旋晶格弛豫(T 1Z ,T 1Q )实验,是在客体分子在两个不同位置选择性氘化的样品上进行的。对实验数据的定量分析证明,客体动力学由两个 gauche 构象异构体之间的相互交换主导。结果表明,通过对 T 1Z 和 T 1Q 数据的综合分析,可以明确地量化这些客体运动(类型和时间尺度)。此外,有证据表明其他运动贡献,例如整体分子波动和横向运动,也有助于自旋弛豫。尿素中 1,6-二溴己烷的分子行为与长链类似物或正烷烃的分子行为完全不同,其中讨论了围绕尿素通道长轴的全反式构象中客体通常不受阻碍的整体旋转运动. 客体排序和动力学的差异是尿素晶格结构(单斜与六方尿素晶格)差异的直接结果。尿素中的
A Reductive Deuteration Approach to the Efficient Synthesis of Deuterated Polymers
作者:Yanhong Dong、Jie An、Lei Ning、Lijun Wang、Mengqi Peng、Zixuan Qin、Hengzhao Li、Shangzhong Liu
DOI:10.1055/a-1796-7064
日期:2022.5
Deuterated polymers have wide applications but limited synthetic methods. In this study, we report an efficient two-step approach for the synthesis of deuterated polyesters and polyurethanes. Firstly, two practical single-electron transfer (SET) reductive-deuteration methods have been developed for site-selective introduction of C(sp3)–D into diol monomers. Nine deuterated diol monomers with high deuterium
氘代聚合物应用广泛,但合成方法有限。在这项研究中,我们报告了一种有效的两步法合成氘代聚酯和聚氨酯。首先,已经开发了两种实用的单电子转移 (SET) 还原-氘化方法,用于将 C(sp 3 )-D 位点选择性引入二醇单体中。在 SmI 2 -D 2 O 和/或 Na-EtOD- d 1下合成了九种具有高氘掺入的氘化二醇单体SET 还原氘条件。然后,使用这些氘代单体在典型的聚合条件下合成了六种典型的氘代聚酯和聚氨酯。在所有合成的聚合物中,充分保持了高氘掺入,这展示了该方法在合成具有位点特异性氘标记的聚合物中的潜在应用。
Kujanpaeae, Jukka P.; Riddell, Frank G., Journal of the Chemical Society. Perkin Transactions 2 (2001), 2000, # 11, p. 2225 - 2231
作者:Kujanpaeae, Jukka P.、Riddell, Frank G.
DOI:——
日期:——
A Convenient and Effective Method for the Regioselective Deuteration of Alcohols
The convenient and regioselectivedeuteration of hydroxy groups on vicinal carbons was achieved by the combination of 5% ruthenium on carbon (Ru/C), hydrogen gas and deuterium oxide (D2O).