在这项工作中,我们合成了一种基于丙烯酰胺的三元共聚物,它是一种由 AB 交替共聚物和 C 均聚物组成的嵌段共聚物。取得空前成就的关键是合理设计一种带有 CF 3取代的水杨酸酯键的丙烯酸酯-丙烯酰胺二乙烯基单体(AAm- CF 3) 以实现高效、选择性的环聚合以及所得环重复单元的定量转化。通过相应模型单体的反应率和模型化合物的定量氨解反应来评估环聚合的选择性和侧链转化能力。通过光诱导电子转移可逆加成-断裂链转移(PET-RAFT)过程与大链转移剂和随后的氨解反应进行环聚合,得到均聚物-嵌段交替共聚物。序列控制的三元共聚物在水中表现出非常独特的热响应行为,这与相应的序列不受控制的三元共聚物(例如均聚物-嵌段统计共聚物和所有统计三元共聚物,尽管结构不能通过1 H NMR 区分。
Ruthenium(II)-Catalyzed Synthesis of Hydroxylated Arenes with Ester as an Effective Directing Group
摘要:
An unprecedented Ru(II) catalyzed ortho-hydroxylation has been developed for the facile synthesis of a variety of multifunctionalized arenes from easily accessible ethyl benzoates with ester as an efficient directing group. Both the TFA/TFAA cosolvent system and oxidants serve as the critical success factors in this transformation. The reaction demonstrates excellent reactivity, good functional group tolerance, and high yields.
The invention relates to Fatty Acid Acetylated Salicylate Derivatives; compositions comprising an effective amount of a Fatty Acid Acetylated Salicylate Derivative; and methods for treating or preventing an inflammatory disorder comprising the administration of an effective amount of a Fatty Acid Acetylated Salicylate Derivative.
Synthesis of Novel Ligustrazine Derivatives as Na<sup>+</sup>/H<sup>+</sup>Exchange Inhibitors
作者:Mei Ren、Jin Dong、Yungen Xu、Nan Wen、Guoqing Gong
DOI:10.1002/cbdv.200900353
日期:2010.11
A novel series of 3,5,6‐trimethylpyrazine‐2‐methoxy (or methylamino) substituted benzoyl‐guanidine derivatives were designed and synthesized as Na+/H+ exchange (NHE) inhibitors. In this study, compounds with electron‐withdrawing substituents on the benzene ring seemed to improve NHE‐1 inhibitory activities. Compounds 6d, 6k, and 6l were found to be potent inhibitors of NHE‐1 (IC50=3.0±1.6, 3.0±1.4
[EN] FATTY ACID ACETYLATED SALICYLATES AND THEIR USES<br/>[FR] SALICYLATES ACÉTYLÉS D'ACIDES GRAS ET LEURS UTILISATIONS
申请人:CATABASIS PHARMACEUTICALS INC
公开号:WO2010006085A1
公开(公告)日:2010-01-14
The invention relates to Fatty Acid Acetylated Salicylate Derivatives; compositions comprising an effective amount of a Fatty Acid Acetylated Salicylate Derivative; and methods for treating or preventing an inflammatory disorder comprising the administration of an effective amount of a Fatty Acid Acetylated Salicylate Derivative.
The invention relates to Fatty Acid Acetylated Salicylate Derivatives; compositions comprising an effective amount of a Fatty Acid Acetylated Salicylate Derivative; and methods for treating or preventing an inflammatory disorder comprising the administration of an effective amount of a Fatty Acid Acetylated Salicylate Derivative.