Substituted styryl benzylsulfones for treating proliferative disorders
CA 2406212 C · Owner: Reddy, M. V. Ramana · Inventors: Reddy, M. V. Ramana; Reddy, E. Premkumar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Styryl benzylsulfones of formula (I) are useful as antiproliferative agents including, for example, anticancer agents. In said formula (a) (i) at least , three of R1, R2, R3 R4 and R5 are independently selected from the group consisting of halogen, C1-C6 alkyl, C1-C6 alkoxy nitro, cyano, carboxyl, hydroxyl, phosphonato amino, sulfamyl, acetoxy, dimethylamino(C2-C6 alkoxy) and trifluoromethyl, and the balance of said R1 R2, R3, R4 and R5 are , independently selected from the group consisting of hydrogen halogen, C1-C6 , alkyl, C1-C6 alkoxy, nitro cyano, carboxyl, hydroxyl, phosphonato amino, sulfamyl, acetoxy, dimethylamino(C2-C6 alkoxy) and trifluoromethyl; and (ii) R6, R7, R8, R9, and …
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 April 13, 2001 and granted February 1, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 13, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 2023.
- 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.