The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 1992
Filed:
Jun. 05, 1989
Balraj K Handa, Welwyn Garden City, GB;
Peter J Machin, London, GB;
Joseph A Martin, Harpenden, GB;
Sally Redshaw, Stevenage, GB;
Gareth J Thomas, Welwyn, GB;
Hoffmann-La Roche Inc., Nutley, NJ (US);
Abstract
Compounds of the formula ##STR1## wherein R.sup.1 is alkoxycarbonyl, aralkoxycarbonyl, alkanoyl, cycloalkylcarbonyl, aralkanoyl, aroyl, heterocyclylcarbonyl, alkylsulphonyl, arylsulphonyl, monoaralkylcarbamoyl, cinnamoyl or .alpha.-aralkoxycarbonylaminoalkanoyl and R.sup.2 is hydrogen or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached represent a cyclic imide group of the formula ##STR2## in which P and Q together represent an aromatic system; R.sup.3 is alkyl, cycloalkyl, aryl, aralkyl, heterocyclylalkyl, cyanoalkyl, alkyl- sulphinylalkyl, carbamoylalkyl or alkoxycarbonylalkyl or, when n stands for zero, R.sup.3 can also represent alkylthioalkyl or, when n stands for 1, R.sup.3 can also represent alkylsulphonylalkyl; R.sup.4 is alkyl, cycloalkyl, cycloalkylalkyl, aryl or aralkyl; R.sup.5 is hydrogen and R.sup.6 is hydroxy or R.sup.5 and R.sup.6 together represent oxo; R.sup.7 and R.sup.8 together represent a trimethylene or tetramethylene group which is optionally substituted by hydroxy, alkoxycarbonylamino or acylamino or in which one --CH.sub.2 -- group is replaced by --NH--, --N(alkoxycar- bonyl)--, --N(alkyl)-- or --S-- or which carries a fused cycloalkane, aromatic or heteroaromatic ring; and R.sup.9 is alkoxycarbonyl, monoalkylcarbamoyl, monoaralkylcarbamoyl, monoarylcarbamoyl or a group of the formula ##STR3## in which R.sup.10 and R.sup.11 each represent alkyl; and their pharmaceutically acceptable acid addition salts inhibit proteases of viral origin and can be used as medicaments for the treatment or prophylaxis of viral infections. They can be manufactured according to generally known procedures.