Dihomo-seco-cholestanes with two unsaturated bonds in the side chain
CA 2296145 A1 · Owner: Mohr, Peter · Inventors: Barbier, Pierre; Mohr, Peter; Muller, Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polyunsaturated 24a,24b-dihomo-9,10-secocholestane derivatives of formula (I) wherein A is a single or double bond, B1 and B2 are each independently CH=CH or CC, T is CH2 or CH2CH2, X is -CH2- or > C=CH2 R1 is H, F or OH, R2 and R3 , are each independently lower alkyl or CF3 or C(R2,R3) is C3-6-cycloalkyl, are , useful in the treatment or prevention of vitamin D dependent disorders and of IL-12-dependent autoimmune diseases, particularly psoriasis basal cell , carcinomas, disorders of keratinization and keratosis leukemia, osteoporosis, hyperparathyroidism accompanying renal failure multiple sclerosis, transplant , rejection graft vs. host disease, rheumatoid arthritis insulin-dependent …
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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
- Filed July 10, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2020.
- 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.