Synthesis of 3,5-Disubstituted Isoxazoles Containing Privileged Substructures with a Diverse Display of Polar Surface Area
作者:Mingi Kim、Yoon Soo Hwang、Wansang Cho、Seung Bum Park
DOI:10.1021/acscombsci.7b00032
日期:2017.6.12
substituents which uniquely display polar surface area in a diverse manner. A library of 3,5-disubstituted isoxazoles were systematically prepared via 1,3-dipolar cycloaddition of alkynes with nitrile oxides prepared by two complementary synthetic routes; method A utilized a halogenating agent with a base and method B utilized a hypervalent iodine reagent. Through the biological evaluation of corresponding
Catalytic Enantioselective [3 + 2] Cycloaddition of α-Keto Ester Enolates and Nitrile Oxides
作者:Samuel L. Bartlett、Yoshihiro Sohtome、Daisuke Hashizume、Peter S. White、Miki Sawamura、Jeffrey S. Johnson、Mikiko Sodeoka
DOI:10.1021/jacs.7b03782
日期:2017.6.28
An enantioselective [3 + 2] cycloaddition reaction between nitrileoxides and transiently generated enolates of α-keto esters has been developed. The catalyst system was found to be compatible with in situ nitrile oxide-generation conditions. A versatile array of nitrileoxides and α-keto esters could participate in the cycloaddition, providing novel 5-hydroxy-2-isoxazolines in high chemical yield
The present invention is concerned with isoxazole-pyridine derivatives of formula I
wherein X, R
1
to R
6
are as described herein. The compounds are active on the GABA A α5 receptor binding site and useful for the treatment of cognitive disorders, such as Alzheimer's disease.
本发明涉及式I的异恶唑-吡啶衍生物
其中X,R1至R6如本文所述。这些化合物对GABA A α5受体结合位点具有活性,并可用于治疗认知障碍,如阿尔茨海默病。
Aryl-isoxazol-4-yl-imidazole derivatives
申请人:Buettelmann Bernd
公开号:US20070161654A1
公开(公告)日:2007-07-12
The present invention is concerned with aryl-isoxazol-4-yl-imidazole derivatives of formula I:
wherein
R
1
to R
6
are as defmed in the specification and pharmaceutically acceptable acid addition salts thereof. This class of compounds has high affinity and selectivity for GABA A α5 receptor binding sites and might be useful as cognitive enhancer or for the treatment of cognitive disorders like Alzheimer's disease.
本发明涉及式I的芳基异噁唑-4-基咪唑衍生物:其中R1至R6如规范中定义,并且其药用酸盐。这类化合物具有高亲和力和选择性结合到GABA A α5受体结合位点,可能有助于作为认知增强剂或治疗认知障碍如阿尔茨海默病。