6.beta. 7.beta.;15, 16-DIMETHYLENE-1,4-ANDROSTADIEN- 3-ONES, PROCESS FOR THEIR PRODUCTION AND THEIR USE AS MEDICAMENTS
CA 1134814 A · Owner: Schering Aktiengesellschaft · Inventors: Wiechert, Rudolf; Casals-Stenzel, Jorge; Prezewowsky, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a 6.beta.7.beta.;15,16-dimethylene- 1,4-androstadien-3-one of the general formula I, in which the 15,16-positioned methylene group may be in the .alpha.- or .beta.-configuration and E represents a group of the formula, , or , and a process for the preparation thereof. Compounds of the invention have useful pharmacological properties, being, inter alia, diuretics of the aldosterone-antagonist type. Accordingly the invention, also provides a pharmaceutical preparation containing a compound of the general formula I.
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 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.