6-amino-6-desoxyfumagillols, production and use thereof
CA 2011448 C · Owner: Kishimoto, Shoji · Inventors: Kishimoto, Shoji; Marui, Shogo; Fujita, Takeshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a compound of the formula:, (see formula I), wherein R1 is 2-methyl-1-propenyl group or isobutyl group; R2 and R3 are each hydrogen atom an optionally, substituted hydrocarbon residue or an optionally substituted acyl group or R2 and R3 may form a ring together with the adjacent nitrogen atom; and the bonding mark ~ means .alpha.-linkage or .beta.-linkage or a salt, thereof. The compound (I) of the present invention has among others, angiogenesis inhibiting activity cell-growth inhibiting activity and immune reaction inhibiting activity, thus being useful as medicines etc.
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 March 5, 1990 and granted June 27, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2012.
- 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.