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Novel structural hybrids of pyrazolobenzothiazines with benzimidazoles as cholinesterase inhibitors.

Abstract：

:Two series of novel pyrazolobenzothiazine-based hybrid compounds were efficiently synthesized starting from saccharin sodium salt. Pyrazolo[4,3-c][1,2]benzothiazine scaffolds were N-arylated by using p-fluorobenzaldehyde, followed by the incorporation of a benzimidazole or similar ring systems by treatment with arylenediamines. These phenylene-connected hybrid compounds were investigated as potential inhibitors of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). Compounds 12d and 12k were the most potent AChE inhibitors with IC50 values of 11 and 13 nM, respectively, while 6j (IC50 = 17 nM) proved to be the most active inhibitor against BuChE with remarkable selectivity for BuChE over AChE. Molecular docking studies were also performed on human AChE and BuChE to suggest possible binding modes in which the inhibitor's extended structure is accommodated along the active site gorge of both enzymes.

journal_name

Eur J Med Chem

journal_title

European journal of medicinal chemistry

authors

Aslam S,Zaib S,Ahmad M,Gardiner JM,Ahmad A,Hameed A,Furtmann N,Gütschow M,Bajorath J,Iqbal J

doi

10.1016/j.ejmech.2014.03.035

subject

Has Abstract

pub_date

2014-05-06 00:00:00

pages

106-17

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(14)00248-7

journal_volume

78

pub_type

杂志文章

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