Inhibitors of mammalian collagenase
CA 1248296 A · Owner: Squibb (E.R.) & Sons, Inc. · Inventors: Sundeen, Joseph E.; Dejneka, Tamara
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mammalian collagenase is inhibited by compounds of the formula, or salts thereof, wherein R is hydrogen, alkanoyl of 2 to 10 carbon atoms or arylcarbonyl;, R1 is of 3 to 8 carbon atoms cycloalkyl of 3, to 7 carbon atoms, aryl or arylalkyl; R2 is hydrogen, -(lower alkyl)-, or -(lower alkyl)- ;, R3 is , , , , , , -ORg, -Cl, -Br or ;, R4 is hydrogen, methyl, ethyl, or , ; R5 and R6 are each independently selected as -OCH3 or -OCH2CH3 or are combined as -OCH2 CH2O- or -O-(CH2)3-O-;, R7 and R8 are each independently selected as hydrogen, methyl or ethyl or are combined as -(CH2)4- -(CH2)5- or -CH2CH2-O-CH2CH2-;, R9 is hydrogen methyl, ethyl , or, ; m is an integer from 0 to 7; p is an integer …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.