A fragment-based lead discovery approach was used to discover novel ERK2 inhibitors. The crystal structure of N-benzyl-9H-purin-6-amine 1 in complex with ERK2 elucidated its hinge-binding mode. In addition, the simultaneous binding of an imidazole molecule adjacent to 1 suggested a direction for fragment expansion. Structure-based core hopping applied to 1 led to 5H-pyrrolo[3,2-b] pyrazine (3) that afforded direct vectors to probe the pockets of interest while retaining the essential hinge binding elements. Utilizing the new vectors for SAR exploration, the new core 3 was quickly optimized to compound 39 resulting in a greater than 6600-fold improvement in potency. (C) 2015 Elsevier Ltd. All rights reserved.
[DE] 7-([1,2,3]TRIAZOL-4-YL)-PYRROLO[2,3-B]PYRAZINDERIVATE<br/>[EN] 7-([1,2,3]TRIAZOL-4-YL)-PYRROLO[2,3-B]PYRAZINE DERIVATIVES<br/>[FR] DÉRIVÉS DE 7-([1,2,3]TRIAZOL-4-YL)-PYRROLO[2,3-B]PYRAZINE
申请人:MERCK PATENT GMBH
公开号:WO2012059171A1
公开(公告)日:2012-05-10
Verbindungen der Formel (I), worin R1, R2 und R3 die in Anspruch 1 angegebenen Bedeutungen haben, sind Inhibitoren der PDK1 und der Zellproliferation/ Zellvitalität und können zur Behandlung von Tumoren eingesetzt werden.
Compounds of the formula (I), in which R
1
, R
2
and R
3
have the meanings indicated in Claim
1
, are inhibitors of PDK1 and cell proliferation/cell vitality and can be employed for the treatment of tumours.