Daunomycin and adriamycin sulfono and sulfoxo analogues
CA 1269370 C · Owner: Wong, Chiu M. · Inventors: Wong, Chiu M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides novel compounds of the formula (I):, (I), including all stereoisomers thereof and pharmaceutically ac-, ceptable salts thereof wherein, of A and B , one is C=O and, the other is SW-Y; R is hydrogen hydroxy or methoxy; R1 is, hydrogen or hydroxy; R2 is hydrogen or hydroxy; X is hydrogen hydroxy or methoxy and Y is O or °2; provided that R and X do not both stand for methoxy. These compounds show potent growth inhibition activity against P-388 leukemia cells and are therefore potentially useful in the treatment of cancer.
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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.