A regioselective functionalization of the pyrazolo[1,5-a]pyridine scaffold using Mg- and Zn-TMP bases (TMP = 2,2,6,6-tetramethylpiperidyl) in the presence or absence of BF3·OEt2 is described. Also, various functionalized pyrazolo[1,5-a]pyridines bearing an ester function (and an NHBoc or ethyl group) are magnesiated and functionalized, leading to polysubstituted heterocycles. Additionally, a sulfoxide
描述了在存在或不存在BF 3 ·OEt 2的情况下,使用Mg-和Zn-TMP碱基(TMP = 2,2,6,6-四甲基哌啶基)对吡唑并[1,5- a ]吡啶骨架进行的区域选择性官能化。另外,将具有酯官能团(和NHBoc或乙基)的各种官能化的吡唑并[1,5- a ]吡啶进行镁化和官能化,从而形成多取代的杂环。另外,据报道使用亚硫酸镁直接进行亚金属的邻位金属化,然后进行吡唑并[1,5- a ]吡啶亚砜的无过渡金属的胺化。
Process for production of pyrazole-fused ring derivatives
申请人:Negi Shigeto
公开号:US20070191613A1
公开(公告)日:2007-08-16
An object of the invention is to find out intermediates usful for the synthesis of pyrazol-fused ring derivatives (such as 7-phenylpyrazolo[1,5-a]pyridine derivatives) and a method for producing the same. A method for producing compound represented by the general formula (II), wherein Z
1
and Z
2
each independently represents a methine group or a nitrogen atom; R
1
represents an ethyl group or the like; R
5
represents a hydrogen atom or the like; R
2
and R
3
each independently represents a C
1-6
alkyl group or the like, salts thereof, or solvates of both, comprising the step of: reacting a compound represented by the general formula (I), wherein Z
1
, Z
2
, R
5
, R
1
, R
2
and R
3
each has the same definition as described above, with an organometallic reagent; and then reacting the resulting product with pentafluoroiodobenzene.
Provided is a compound showing excellent antifungal activity against Trichophyton fungus, which is a major causative microorganism of superficial mycosis, and high effectiveness on diseases caused by Trichophyton fungi. A biaryl derivative represented by the formula (I) or a salt thereof:
wherein ring A is an optionally substituted phenyl, or an optionally substituted 5- or 6-membered ring heteroaryl (ring A may be further condensed to form an optionally substituted fused ring); Q is CH2, C=O, NH, O, S or the like; X1, X2 and X3 are CR1 or N; Y is CH or N; Z is CR2b or N; R2a and R2b are each a hydrogen atom, a halogen atom, an optionally substituted C1-C6 alkyl group, a C1-C6 haloalkyl group or the like; R2a and R2b may form, together with carbon atoms bonded thereto, an optionally substituted carbocycle, or an optionally substituted heterocycle.
Provided is a compound showing excellent Antifungal activity against Trichophyton fungus, which is a major causative microorganism of superficial mycosis, and high effectiveness on diseases caused by Trichophyton fungi. A biaryl derivative represented by the formula (I) or a salt thereof:
wherein ring A is an optionally substituted phenyl, or an optionally substituted 5- or 6-membered ring heteroaryl (ring A may be further condensed to form an optionally substituted fused ring); Q is CH2, C═O, NH, O, S or the like; X1, X2 and X3 are CR1 or N; Y is CH or N; Z is CR2b or N; R2a and R2b are each a hydrogen atom, a halogen atom, an optionally substituted C1-C6 alkyl group, a C1-C6 haloalkyl group or the like; R2a and R2b may form, together with carbon atoms bonded thereto, an optionally substituted carbocycle, or an optionally substituted heterocycle.
[EN] 2H-INDAZOLE DERIVATIVES AND THEIR USE IN THE TREATMENT OF DISEASE<br/>[FR] DÉRIVÉS DE 2H-INDAZOLE ET LEUR UTILISATION DANS LE TRAITEMENT DE MALADIES