A Convenient Synthesis of 4-Alkyl-5-aminoisoxazoles
摘要:
A series of 4-alkyl-5-aminoisoxazoles have been synthesized in high yield by nucleophilic addition of lithiated alkyl nitriles to (alpha)-chlorooximes. The scope and limitations of this reaction were examined by varying the nature of the nitrile and chloride oxime.
The present invention is concerned with isoxazol-4-yl-oxadiazole derivatives of formula
wherein
R
1
,
R
2
, and
R
3
, are as defined 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.
本发明涉及公式中的异噁唑-4-基-噁唑烷衍生物,其中R1、R2和R3如规范所定义,并且其药学可接受的酸盐。该类化合物具有高亲和力和选择性,可与GABA A α5受体结合位点结合,并可能用作认知增强剂或用于治疗认知障碍,如阿尔茨海默病。
ARYL-ISOXAZOLO-4-YL-OXADIAZOLE DERIVATIVES
申请人:Buettelmann Bernd
公开号:US20090197875A1
公开(公告)日:2009-08-06
The present invention is concerned with isoxazol-4-yl-oxadiazole derivatives of formula
wherein
R
1
,
R
2
, and
R
3
, are as defined 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.
本发明涉及公式中的异噁唑-4-基-噁二唑衍生物,其中R1、R2和R3如规范所定义,并且其药学上可接受的酸盐。这类化合物对GABA A α5受体结合位点具有高亲和力和选择性,并可能用作认知增强剂或治疗认知障碍如阿尔茨海默病。