13 .alpha.-ALKYLGONANES, THEIR PREPARATION AND PHARMACEUTICAL PREPARATIONS CONTAINING THEM
CA 1307784 C · Owner: Schering Aktiengesellschaft · Inventors: Elger, Walter; Rohde, Ralph; Neef, Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a compound of the general formula, (I), in which, R1 represents a group of the general formula , in which RI and RII, which may be the same or different, each represents a hydrogen, atom or an alkyl group having from 1 to 4 carbon atoms, or, RI and RII, together with the nitrogen atom to which they are attached, represent a saturated 5- or 6-membered ring, which may, if, desired contain a further hetero, atom, or, a corresponding tertiary N-oxide group or, ORIII in which, RIII represents a methyl ethyl, propyl, isopropyl, methoxyphenyl allyl or-, .beta.-dimethylaminoethyl group R2 represents a hydrogen atom, a methyl group or an ethyl group, R3 represents a …
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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 September 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 22, 2009.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.