Nucleophilic (Radio)Fluorination of α-Diazocarbonyl Compounds Enabled by Copper-Catalyzed H–F Insertion
作者:Erin E. Gray、Matthew K. Nielsen、Kimberly A. Choquette、Julia A. Kalow、Thomas J. A. Graham、Abigail G. Doyle
DOI:10.1021/jacs.6b06770
日期:2016.8.31
The copper-catalyzed H-F insertion into α-diazocarbonyl compounds is described using potassium fluoride (KF) and hexafluoroisopropanol. Access to complex α-fluorocarbonyl derivatives is achieved under mild conditions, and the method is readily adapted to radiofluorination with [(18)F]KF. This late-stage strategy provides an attractive route to (18)F-labeled biomolecules.
An active ingredient is a compound represented by the general formula [I]:
[wherein R
1
and R
2
represent a lower alkyl group, a C
3-6
cycloalkyl group or the like, X
1
and X
2
represent methine, an Ar—Y
1
—Y
2
—Y
3
-substituted methine or the like, however either of them is an Ar—Y
1
—Y
2
—Y
3
-substituted methine, X
3
to X
8
represent methine, —N— or the like, Y
1
and Y
3
represent a single bond, —O— or the like, Y
2
represent a single bond, a lower alkylene group or the like, W represent —(O)—(CH
2
)n-(O)— or the like, n represents an integer of 1 to 4, L and Z
2
represent a single bond or a methylene group, Z
1
represents a single bond, a C
1-4
alkylene group or the like, and Ar represents an aromatic carbocyclic group or the like]. The compound acts as a melanin-concentrating hormone receptor antagonist and useful as a therapeutic agent for obesity or the like.
Biaryl urea derivative or salt thereof and preparation process and use for the same
申请人:Fudan University
公开号:US10647665B2
公开(公告)日:2020-05-12
The present invention discloses a biaryl urea RORγt inhibitor, and specifically relates to a biaryl urea derivative, as represented by formula I, with an RORγt inhibiting activity, and a preparation process thereof, and a pharmaceutical composition comprising the compound. Further disclosed is use of the compound for treating an RORγt-related disease.
本发明公开了一种双芳基脲 RORγt 抑制剂,具体涉及一种由式 I 表示的具有 RORγt 抑制活性的双芳基脲衍生物及其制备工艺,以及包含该化合物的药物组合物。进一步公开了该化合物用于治疗 RORγt 相关疾病的用途。
Design, Synthesis, and Activity Evaluation of Fluorine-Containing Scopolamine Analogues as Potential Antidepressants
This study aimed to develop novel rapid-acting antidepressants with sustained efficacy and favorable safety profiles. We designed and synthesized a series of fluorine-containing scopolamine analogues and evaluated their antidepressant potential. In vitro cytotoxicity assays showed that most of these compounds exhibited minimal toxicity against neuronal and non-neuronal mammalian cell lines (IC50 >
本研究旨在开发具有持续疗效和良好安全性的新型速效抗抑郁药。我们设计并合成了一系列含氟东莨菪碱类似物,并评估了它们的抗抑郁潜力。体外细胞毒性测定表明,大多数这些化合物对神经元和非神经元哺乳动物细胞系表现出最小的毒性(IC 50 > 100 μM)。采用悬尾试验评价化合物的抗抑郁活性,确定S -3a为具有强效、持续抗抑郁作用的先导化合物。在行为上, S -3a减轻了小鼠的抑郁症状,并表现出比东莨菪碱更高的认知安全裕度。毒理学评估证实了S -3a的安全性,而药代动力学显示其清除速度很快(半衰期:16.6 分钟)。从机制上讲, S -3a拮抗 M 1受体并升高 BDNF 水平,表明其作为抗抑郁药的潜力有待进一步探索。