Novel pyrimidine derivatives and processes for the preparation thereof
CA 2197298 C · Owner: Kim, Jae Kyu · Inventors: Lee, Sang Ho; Lee, Jong Wook; Shon, Moon Kyu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel pyrimidine derivatives of formulae (I- 1) and (I-2) and pharmaceutically acceptable salts thereof which possess an excellent anti-secretory activity, pharmaceutical compositions containing same as an active ingredient, their novel intermediates and processes for the , preparation thereof. In said formulae R4 and R5, which may be the same or , different are independently hydrogen or a C1-C3 alkyl group or jointly form , a cyclopentyl or cyclohexyl ring; A is a group of formula (II) wherein R1 and R2 are, independently of each other, hydrogen or a C1-C3 alkyl group and R3 , is hydrogen, a C1-C3 alkyl group or a halogen; and B is 1-(substituted)- …
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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
- Filed August 10, 1995 and granted October 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 10, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 2017.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.