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Synthesis of 2-phenylisothiazol-3(2H)-one 1,1-dioxides: Inhibitors of human leukocyte elastase
被引:0
作者:
Gütschow, Michael
[1
]
Pietsch, Markus
[1
]
Taubert, Kathleen
[2
]
Freysoldt, Tonia H. E.
[2
]
Schulze, Bärbel
[2
]
机构:
[1] Pharmazeutisches Institut, Poppelsdorf, Universität Bonn, D-53115 Bonn
[2] Institut für Organische Chemie, Universität Leipzig, D-04103 Leipzig
来源:
Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
|
2003年
/
58卷
/
01期
关键词:
Enzyme Inhibition;
Human Leukocyte Elastase;
Sultams;
D O I:
10.1515/znb-2003-0115
中图分类号:
学科分类号:
摘要:
A series of 2-phenylisothiazol-3(2H)-one 1,1-dioxides 14a-q were synthesized by oxidation of isothiazolium perchlorates 12. The inhibition of the serine proteases cathepsin G, chymotrypsin and human leukocyte elastase (HLE) by 14 was investigated. Some 4,5-diphenyl substituted derivatives (14i-k) were found to inhibit HLE in a time-dependent manner and exhibited kobs/[I] values > 500 M-1s-1. 14k (kobs/[I] = 2400 M-1s-1), was the most potent HLE inhibitor of this series. Kinetic investigations led to the conclusion that 2-phenylisothiazol-3(2H)-one 1,1-dioxides interact with HLE at the active site as well as at another binding site, resulting in a complex type of inhibition.
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页码:111 / 120
页数:9
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