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Thrombin inhibitors. 2. Amide derivatives of N alpha-substituted L-arginine.

Abstract：

:A series of N alpha-(arylsulfonyl)-L-arginine amide derivatives with substituted or unsubstituted naphthalene and heterocyclic compounds as the N alpha-substituent was prepared and tested as inhibitors of the clotting activity of thrombin. N-n-Butyl and N-n-butyl-N-methyl derivatives of N alpha-dansyl-L-arginine amide were the most inhibitory of N-alkyl and N,N-dialkyl derivatives of N alpha-dansyl-L-arginine amide. Their inhibitory effect was as potent as that of N alpha-dansyl-L-arginine-n-butyl ester with an I50 of 2 X 10(-6) M. N alpha-Substituted naphtalenesulfonyl-L-arginine amide derivatives of 4-methyl- and 4-ethylpiperidine also showed a potent inhibition with an I50 of 10(-7) to 10(-6) M. The most potent inhibitior in this study was 1-[N alpha-(4,6-dimethoxynaphthalene-2-sulfonyl)-arginyl]-4-methylpiperidine, with an I50 of 7.5 X 10(-8) M. Arginine amide derivatives of 4-methyl- or 4-ethylpiperidine with tetralin or an oxygen-containing heterocyclic compound as a N alpha-substituent showed an inhibition with an I50 less than 10(-5) M. N-Monosubstituted derivatives of N alpha-dansyl-L-arginine amide were not hydrolyzed at all by thrombin and were hydrolyzed very slowly by trypsin, and N,N-disubstituted derivatives were not hydrolyzed at all by both enzymes.

journal_name

J Med Chem

journal_title

Journal of medicinal chemistry

authors

Kikumoto R,Tamao Y,Ohkubo K,Tezuka T,Tonomura S,Okamoto S,Funahara Y,Hijikata A

doi

10.1021/jm00182a004

subject

Has Abstract

pub_date

1980-08-01 00:00:00

pages

830-6

issue

8

eissn

0022-2623

issn

1520-4804

journal_volume

23

pub_type

杂志文章

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