某些硝基罗吲唑和硝基苯并三唑衍生物中的替代亲核取代与叔碳负离子几乎完全导致产物在硝基的对位被取代。从理论计算和结构证据来看,这种反应结果主要是由于立体电子学的原因和Cortho-CNO 2 键的显着缩短相结合。手性和前手性中心(分别为次甲基和 N 亚甲基基团)的存在通常会引起亚甲基质子信号的额外分裂,该信号在长距离上传输,前提是偶联途径中没有吡啶氮。
Efficient and Regioselective Synthesis of 2-Alkyl-2H-indazoles
摘要:
An efficient and regioselective synthesis of 2-methyl-2H-indazoles and 2-ethyl-2H-indazoles using trimethyloxonium tetrafluoroborate or triethyloxonium hexafluorophosphate is reported.
on the indazole building block have been investigated referring to molecular modeling hypotheses and thanks to the in vitro biologicalevaluation of N1- and N2-methyl and ethyl-4-substituted indazoles on nNOS. Secondly, we attempted to confirm the importance of the substitution in position 4 or 7 by a hydrogen bond acceptor group thanks to the synthesis and the in vitro biologicalevaluation of a new
TRICYCLIC INHIBITORS OF PRO-MATRIX METALLOPROTEINASE ACTIVATION
申请人:WANG Aihua
公开号:US20120129811A1
公开(公告)日:2012-05-24
This invention relates to tricycle I and its therapeutic and prophylactic uses, wherein the variables C
1
, C
2
, Z
1
, Z
2
, Q, J, R
1
, and R
3
are defined in the specification. Disorders treated and/or prevented include rheumatoid arthritis.
Selective N2-Alkylation of 1H-Indazoles and 1H-Azaindazoles
作者:Allyn T. Londregan、Jennifer Clemens、Emily L. Bell
DOI:10.1055/s-0040-1719917
日期:2022.7
A general and selective procedure for the N2-alkylation of 1H-indazoles and 1H-azaindazoles is presented. Promoted by either trifluoromethanesulfonic acid or copper(II) triflate, diverse 1H-indazoles/azaindazoles are selectively alkylated with varied primary, secondary, and tertiary alkyl 2,2,2-trichloroacetimidates at the N2-nitrogen to afford the corresponding 2-alkyl-2H-indazoles/azaindazoles. Forty-one
Compounds and compositions are provided for treatment or amelioration of one or more symptoms of α-synuclein toxicity, α-synuclein mediated diseases or diseases in which α-synuclein fibrils are a symptom or cause of the disease.
Compounds and compositions are provided for treatment or amelioration of one or more disorders characterized by defects in protein trafficking. A method of treating a disorder characterized by impaired protein trafficking includes administering to a subject or contacting a cell with a compound of Formula I: [formula here] or pharmaceutically acceptable salts or derivatives thereof.