Synthesis of aminoalkylpyrazoles and-isoxazoles from cyclic β-(trifluoroacetyl) enamines
作者:V. G. Nenajdenko、S. V. Pronin、E. S. Balenkova
DOI:10.1007/s11172-007-0055-7
日期:2007.2
A method for the synthesis of cyclic β-(trifluoroacetyl) enamines was proposed. Reactions of the latter with hydrazine and hydroxylamine gave pyrazoles and isoxazoles, respectively, containing trifluoromethyl and ω-aminoalkyl fragments. Addition of hydrazine (hydroxylamine) to the above amino enones was regiospecific, the regiochemistry of the heterocyclization of trifluoromethyl ketones being different
Discovery of a potent protein kinase D inhibitor: insights in the binding mode of pyrazolo[3,4-d]pyrimidine analogues
作者:Klaas Verschueren、Mathias Cobbaut、Joachim Demaerel、Lina Saadah、Arnout R. D. Voet、Johan Van Lint、Wim M. De Borggraeve
DOI:10.1039/c6md00675b
日期:——
PKD inhibitors based on the pyrazolo[3,4-d]pyrimidine scaffold. The lead compound for this study was 1-NM-PP1, which was previously found by us and others to inhibit PKD. In our screening we identified one compound (3-IN-PP1) displaying a 10-fold increase in potency over 1-NM-PP1, opening new possibilities for specific protein kinase inhibitors for kinases that show sensitivity towards pyrazolo[3,4-d]pyrimidine
在本研究中,我们着手基于吡唑并[3,4- d ]嘧啶支架合理优化PKD抑制剂。本研究的先导化合物是 1-NM-PP1,我们和其他人之前发现它可以抑制 PKD。在我们的筛选中,我们鉴定出一种化合物 (3-IN-PP1),其效力比 1-NM-PP1 提高 10 倍,为对吡唑并显示敏感性的激酶的特定蛋白激酶抑制剂开辟了新的可能性[3,4- d ]嘧啶衍生的化合物。有趣的是,观察到的 SAR 与通常观察到的结合模式并不完全一致,其中吡唑并[3,4- d ]嘧啶化合物以与 PKD 天然配体 ATP 类似的方式结合。因此,我们建议采用另一种结合模式,其中化合物翻转 180 度。这种基于吡唑并[3,4- d ]嘧啶的化合物的可能的替代结合模式可以为用于对吡唑并[3,4- d ]嘧啶敏感的激酶的新型特异性蛋白激酶抑制剂铺平道路。
The present invention provides an agent for the prophylaxis or treatment of autoimmune diseases (e.g., psoriasis, rheumatoid arthritis, inflammatory bowel disease, Sjogren's syndrome, Behcet's disease, multiple sclerosis, systemic lupus erythematosus etc.) and the like, which has a superior Tyk2 inhibitory action.
The present invention relates to a compound represented by the formula
wherein each symbol is as defined in the specification, or a salt thereof.