Synthesis of novel 7-substituted pyrido[2',3':4,5]furo[3,2-d]pyrimidin-4-amines and their N-aryl analogues and evaluation of their inhibitory activity against Ser/Thr kinases.

Abstract:

:The efficient synthesis of 7-substituted pyrido[2',3':4,5]furo[3,2-d]pyrimidin-4-amines and their N-aryl analogues is described. 3,5-Dibromopyridine was converted into 3-amino-6-bromofuro[3,2-b]pyridine-2-carbonitrile intermediate which was formylated with DMFDMA. Functionalization at position 7 of the tricyclic scaffold was accomplished, before or after cyclisation step, by palladium-catalyzed Suzuki-Miyaura cross-coupling while the pyrimidin-4-amines and N-aryl counterparts were synthesized by microwave-assisted formamide degradation and Dimroth rearrangement, respectively. The final products were evaluated for their potent inhibition of a series of five Ser/Thr kinases (CDK5/p25, CK1δ/ε, CLK1, DYRK1A, GSK3α/β). Compound 35 showed the best inhibitory activity with an IC50 value of 49 nM and proved to be specific to CLK1 among the panel of tested kinases.

journal_name

Bioorg Med Chem Lett

authors

Deau E,Loidreau Y,Marchand P,Nourrisson MR,Loaëc N,Meijer L,Levacher V,Besson T

doi

10.1016/j.bmcl.2013.10.019

subject

Has Abstract

pub_date

2013-12-15 00:00:00

pages

6784-8

issue

24

eissn

0960-894X

issn

1464-3405

pii

S0960-894X(13)01216-X

journal_volume

23

pub_type

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