Phosphate ester derivatives, and their use as anti-cancer agents
CA 1299575 C · Owner: Miyazaki, Hideki · Inventors: Miyazaki, Hideki; Nakamura, Norio; Shimizu, Fusaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of formula (I):, (I) (wherein: m is 1-3; A and B are oxygen or sulfur; and one of R1 and R2 is C10-C22 alkyl and the other is a group of formula (II):, (II), where: n is 2 or 3; and -NR3R4R5 is an amino group and salts thereof are effective anti-cancer agents and may be prepared by condensation of an appropriate .omega.-haloalkyl phosphate or cyclic phosphate with an amine of formula NR3R4R5.
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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 April 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 28, 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.
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.