Omt ester derivatives
CA 1189503 A · Owner: Eli Lilly And Company · Inventors: Kirst, Herbert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of the Invention, Ester derivatives of 5-O-mycaminosyl tylonolide (OMT) of the formula (I):, wherein R and R1 are selected from hydrogen optionally, substituted C1-C5-alkanoyl or optionally substituted benzoyl, phenylacetyl, or phenylpropionyl; R2 is ; m is 1 or 2, and R3 is 3-pyridyl or a group of the formula (I):, where R5 and R6 are independently hydrogen methyl, ethyl, methoxy, or nitro, X is O or S and n is 0 or 1;, provided that when R1 is other than hydrogen R must, also be other than hydrogen; and the pharmaceutically acceptable acid addition salts thereof; which are useful highly potent antibiotics, are provided.
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 June 25, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 2002.
- 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.