Synthesis of linear and angular aryl-morpholino-naphth-oxazines, their DNA-PK, PI3K, PDE3A and antiplatelet activity.

Abstract:

:To continue our study of 2-morpholino-benzoxazine based compounds, which show useful activity against PI3K family enzymes or antiplatelet activity, we designed and synthesized a series of linear 6.7-fused, 5,6-angular fused and 7,8-angular fused-aryl-morpholino-naphth-oxazines. The compounds were prepared from substituted 2-hydroxynaphthoic acid to give the corresponding thioxo analogues 8, 9, 15 and 19. The thioxo products were then converted to the morpholino substituted analogue. The aryl group was introduced by Suzuki coupling of bromo precursors. The products were evaluated for activity at PI3K family enzymes and as platelet aggregation inhibitors and compared to reported unsubstituted analogues. The linear 6.7-fused product 13a and 13b were moderated potent but selective PI3Kδ isoform inhibitors (IC50=7.7 and 5.61μM). Good antiplatelet activity was noticed for the angular 7,8-fused compounds 22a, b, k and l with IC50=3.0,14.0, 2.0 and 5.0μM respectively. The antiplatelet activity is independent of PDE3.

journal_name

Bioorg Med Chem Lett

authors

Morrison R,Zheng Z,Jennings IG,Thompson PE,Al-Rawi JMA

doi

10.1016/j.bmcl.2016.10.003

subject

Has Abstract

pub_date

2016-11-15 00:00:00

pages

5534-5538

issue

22

eissn

0960-894X

issn

1464-3405

pii

S0960-894X(16)31031-9

journal_volume

26

pub_type

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