1.4;3.6-dianhydrohexitol nitrates substituted by purine bases, processes for their preparation and pharmaceutical compositions
CA 1190544 A · Owner: Schwabe (Dr. Willmar) Gmbh & Co. · Inventors: Chatterjee, Shyam S.; Klessing, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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1.4;3.6-Dianhydrohexitol nitrates substituted by purine bases namely, adenyl-desoxy-1.4;3.6-dianhydrohexitol nitrates of the general formula Ia as well as theophyllinyl-desoxy-1.4;3.6dianhydrohexitol nitrates of the general formula Ib (Ia) (Ib), wherein R1 and R2 are the same or different and independently of, one another signify, (a) a hydrogen atom (b) a straight-chained or branched alkyl group with 1 to 7 Catoms, (c) an .omega.-phenylalkyl group whereby the alkyl group has 1 to 7, C-atoms and whereby the phenyl ring can be halogen-substituted in the p-position, or wherein, (d) R1 signifies one of the residues given under (a) to (c) and R2 an acyl radical or an aliphatic, possibly …
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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 July 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2002.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.