[EN] PROCESS FOR PREPARING 5-FLUORO-1H-PYRAZOLO [3, 4-B] PYRIDIN-3-AMINE AND DERIVATIVES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION DE LA 5-FLUORO-1H-PYRAZOLO[3,4-B]PYRIDIN-3-AMINE ET DES DÉRIVÉS DE CELLE-CI
申请人:VERTEX PHARMA
公开号:WO2009018415A1
公开(公告)日:2009-02-05
The present invention relates to a process for the synthesis of 5-fluoro-1H-pyrazolo [3, 4-b]pyridin-3-amine in high yield and purity. The present invention also relates to processes for the synthesis of 5-fluoro-1H-pyrazolo [3, 4- b] ρyridin-3-amine derivatives. These processes are useful for preparing biologically active compounds, particularly certain GSK-3 inhibitors, or derivatives thereof. Reagents and conditi ons : i. Pd ( OAc )2, PPh3, Et3N, H2CO2; i i. 1 ) (COCl )2, CH2Cl2, cat. DMF; 2 ) NH3 (g ), dioxane, i i i. TFAA, Et3N, CH2Cl2, O°C; iv. H2NNH2. H2O, n-butanol, reflux.
本发明涉及一种高产率和纯度合成5-氟-1H-吡唑并[3,4-b]吡啶-3-胺的方法。本发明还涉及合成5-氟-1H-吡唑并[3,4-b]吡啶-3-胺衍生物的方法。这些方法适用于制备生物活性化合物,特别是某些GSK-3抑制剂或其衍生物。试剂和条件:i. Pd(OAc)2,PPh3,Et3N,H2CO2;ii. 1) (COCl)2,CH2Cl2,催化剂DMF;2) NH3(g),二恶烷,iii. TFAA,Et3N,CH2Cl2,0°C;iv. H2NNH2,H2O,正丁醇,回流。