Sugar derivatives
CA 1134819 A · Owner: Hoffmann-La Roche Limited · Inventors: Bollag, Werner; Wyss, Pierre-Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Novel sugar esters and glycosides suitable for the treatment of neoplasms, acne, psoriasis and dermatoses have the formula, wherein R1 represents a group of the formula -CH2OH, -CH2OR6, -COR7 or -CONH2; R2 represents hydrogen or lower alkanoyl; R3 and R4 represent hydrogen or lower alkanoyl or a group R6; R5 represents lower alkoxy or a group OR6 or OR8; R6 represents p-2-(5,6,7,8-tetrahydro-5,5,8,8,- -tetramethyl-2-naphthyl)-propenyl-benzoyl; R7 represents hydroxy, lower alkoxy or OM in which M represents a cation; and R8 represents p-2-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl- -2-naphthyl)-propenyl-benzyl, with the provisos that (i) R1 represents a group of the formula -CH2OR6, …
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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 November 2, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 2, 1999.
- 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.