Derivatives of phenoxy acetic acid and phenoxymethyl tetrazole having antitumor activity
CA 2267047 A1 · Owner: Schumacher, Ralf · Inventors: Kaluza, Brigitte; Di Domenico, Roberto; Menta, Ernesto
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 the use derivatives of phenoxy acetic acid and of, phenoxymethyl tetrazole of formula (I) wherein:, - the -O-C(R1)(R2)-(CH2)P A group can be in ortho meta or para position;, - A is selected from -COOH -COO-(C1-C4)alkyl, -CN or a group of formula in which R' is hydrogen or (C1-C4)alkyl; or the group A-(CH2)P C(R1)(R2)- is selected from phenyl benzyl or , (indolyl)methyl, which may be subsituted by R4 groups; - p is 0, 1 or 2;, - R1 and R2 are independently selected from hydrogen or (C1-C8)alkyl or they form, together with the carbon atom to which they are linked a (C3-C7)cycloalkyl , group;, - R4 are from 0 to 2 substituents independently selected from …
Read the whole patent
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 March 26, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2021.
- 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.