A JAK inhibitor comprising, as an active ingredient, a nitrogen-containing heterocyclic compound represented by formula (I)
wherein W represents a nitrogen atom or -CH-;
X represents -C (=O) - or -CHR4- (wherein R4 represents a hydrogen atom, or the like);
R1 represents the formula described below [wherein Q1 represents-CR8-(wherein R8 represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like);
Q2 represents -NR15- (wherein R15 represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like); and R5 and R6 may be the same or different and each represents a hydrogen atom, halogen, carboxy, substituted or unsubstituted lower alkyl, or the like], or the like; and
R2 and R3 may be the same or different and each represents a hydrogen atom, halogen, substituted or unsubstituted lower alkyl, or the like} or a pharmaceutically acceptable salt thereof.
A convenient synthesis of 2,2′-bipyridine derivatives
作者:Alexander Gehre、Stephen P. Stanforth、Brian Tarbit
DOI:10.1016/j.tetlet.2007.07.153
日期:2007.9
Picolinates 7 were prepared from the corresponding α-chloro-β-keto-esters 6. Esters 7 were converted into 2,2′-bipyridinederivatives 10 via triazines 9 using an aza Diels–Alder reaction.
Convenient Synthesis of Highly Substituted Imidazole Derivatives
作者:Lai Chun Wong、Alexander Gehre、Stephen P. Stanforth、Brian Tarbit
DOI:10.1080/00397911.2011.591957
日期:2013.1.1
Abstract A one-pot synthesis of the trisubstituted imidazole derivatives from α-acetoxy-α-chloro-β-keto-esters, aldehydes, and ammonium acetate has been developed. GRAPHICAL ABSTRACT
An efficient and mild synthesis of highly substituted imidazoles
作者:Marcus F. Brackeen、Jeffrey A. Stafford、Paul L. Feldman、Donald S. Karanewsky
DOI:10.1016/0040-4039(94)88306-8
日期:1994.3
A versatile, one-step imidazole synthesis employing vicinal tricarbonyl compounds is described.
描述了使用邻位三羰基化合物的通用的一步一步咪唑合成。
Rhodium-catalyzed aerobic conversion of 2-diazo-1,3-dicarbonyls to vicinal tricarbonyl compounds and their in-situ stability toward oxidative degradation
作者:Yi-Ting Tsai、Jia-Liang Zhu
DOI:10.1016/j.molstruc.2022.134521
日期:2023.2
Wolff rearrangement via weak interaction with the substrate carbonyl group (ROC=O or RC=O). The reactions of α-diazo-β-ketoesters and 2-diazo-1,3-diketones give the desirable α,β-diketoesters and vic-triketones in 27-78% isolated yields, along with carboxylicacids and/or 2-oxoacids generated by in-situ oxidative C-C single bond cleavage of the former products. Moreover, the bond cleavage process is completely