Synthesis, antioxidant and neuroprotective analysis of diversely functionalized α-aryl-N-alkyl nitrones as potential agents for ischemic stroke therapy
COMPOSITIONS AND METHODS OF INHIBITING RETINAL DEGENERATION
申请人:Anderson Robert E.
公开号:US20130225694A1
公开(公告)日:2013-08-29
Nitrone-based compositions are disclosed that may be utilized for the prevention and treatment of a variety of ophthalmic diseases or conditions where RPE65 protein isomerohydrolase is implicated. Methods of production and use of said nitrone-based compositions, as well as pharmaceutical and ophthalmic compositions containing same, are disclosed.
A compound represented by the figure (1) or a pharmaceutically acceptable salt thereof is useful as a medicament for treating retinal degenerative disorders:
wherein Ar is optionally substituted phenyl or optionally substituted heteroaryl;.
n is 0, 1 or 2;
W is -CH2NH- or -CH=N(O)-;
R1, R2 and R3 are independently optionally substituted alkyl, carboxyl or alkoxycarbonyl; any two groups of R1, R2 and R3 may be taken together with the carbon atom to form optionally substituted cycloalkane; all of R1, R2 and R3 may be taken together with the adjusent carbon atom to form optionally substituted bicycloalkane or optionally substituted tricycloalkane;
R4 and R5 are independently hydrogen atom or optionally substituted alkyl.
Rh(III)- and Ir(III)-Catalyzed C–H Alkynylation of Arenes under Chelation Assistance
作者:Fang Xie、Zisong Qi、Songjie Yu、Xingwei Li
DOI:10.1021/ja501910e
日期:2014.3.26
Rh(III)- and Ir(III)-catalyzed, chelation-assisted C-H alkynylation of a broad scope of (hetero)arenes has been developed using hypervalent iodine-alkyne reagents. Heterocycles, N-methoxy imines, azomethine imines, secondary carboxamides, azo compounds, N-nitrosoamines, and nitrones are viable directing groups to entail ortho C-H alkynylation. The reaction proceeded under mild conditions and with controllable
Synthesis, antioxidant and neuroprotective analysis of diversely functionalized α-aryl-N-alkyl nitrones as potential agents for ischemic stroke therapy