Spectinomycin derivatives and processes for their preparation
CA 1105458 A · Owner: Thomae (Dr. Karl) G.M.B.H. · Inventors: Reuter, Wolfgang; Maier, Roland; Woitun, Eberhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is compounds of formula I, wherein X is a protective group which is readily removable by treatment with acid or base or by reduction, and their acid addition salts. The compounds of formula I are valuable intermediates in the preparation of 4-spectinomycylamine, which displays strong antimicrobial activity.
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
- Granted July 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 1998.
- 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.