Process for preparing netilmicin
CA 1290751 C · Owner: Schering Corporation · Inventors: Tann, Chou-Hong; Chiu, John Sze-Hung; Thiruvengadam, Tiruvettipuram Kannappan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A high yielding process ofr converting 3,2',6'tri-N-acetyl sisomicin to netilmicin comprising the step of silylating the starting material at the 5 2", positions, and optionally at the 4" positon converting, the 1-amino substituents to a 1-N-imino substituent converting the imino to an ethylamino, deprotecting the compound and recovering netilmicin. Also disclosed are novel intermediate compounds.
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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.