Process for the preparation of fused pyridine compounds
CA 1301157 C · Owner: Wong, George S.K. · Inventors: Taylor, Edward C.; Wong, George S.K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
960-105, PROCESS FOR THE PREPARATION OF FUSED PYRIDINE COMPOUNDS ABSTRACT, 2-Amino-4 hydroxy-6-2-(4-carboxyphenyl)alk-1-en- 1-ylpyrido2,3,-dpyrimidines and 2-amino-4-hydroxy-6- 2-(4-carboxyphenyl)alk-1-yn-1-ylpyrido2,3-dpyrimidines are prepared through the reaction of a haloaromatic compound and an unsaturated compound in the presence of a palladium catalyst. The products are chemical intermediates for the preparation of antineoplastic agents. A typical embodiment is the reaction of a protected 2-amino-4-hydroxy-6-ethynylpyrido2,3-dpyrimidine and an ester of 4-iodobenzoic acid.
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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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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.