Ring substituted isoquinolines
CA 1333067 C · Owner: Vecchietti, Vittorio · Inventors: Vecchietti, Vittorio; Giardina, Giuseppe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound, or a solvate or salt thereof of formula, (I):, ( I), in which:, RCO is an acyl group in which the group R contains a substituted or unsubstituted carbocyclic aromatic or heterocyclic aromatic ring and R1 and R2 are independently hydrogen, C1-6 alkyl, C2-6 alkenyl C3-6, cycloalkyl or C4-12 cycloalkylalkyl groups or together form a C2-8 branched or linear polymethylene or C2-6 alkenylene group optionally substituted with a hetero-atom;, R3 is hydrogen, C1-6 alkyl or phenyl, or R3 together, with R1 forms a -(CH2)3- or -(CH2)4group;, R4 and R5, which may be the same or different and may be attached to the same or different carbon atoms of the isoquinoline nucleus, are each hydrogen …
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
- Granted November 15, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 15, 2011.
- 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.