11 .beta.-phenyl-4,9,15-estratrienes their manufacture and pharmaceut ical preparations containing same
CA 1320946 C · Owner: Ottow, Eckhard · Inventors: Ottow, Eckhard; Chwalisz, Krzysztof; Beier, Sybille
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New 11.beta. phenyl-4,9,15-estratrienes of formula I ( I ), are described, where, X implies an oxygen atom or a hydroxyimino grouping N~OH R1 stands for a hydrogen atom or a methyl group R2 implies a hydrogen atom, an alkyl radical or an acyl radical with in each case 1 to 10 carbon atoms R3 stands for a hydrogen atom, a cyanomethyl group -(CH2)nCH2Z where n implies the numbers 0 1, 2, 3, 4 or, 5, Z = -H or -OR5 with R5 having the significance of a hydrogen atom or an alkyl or acyl group with in each case 1 to 10 carbon atoms, or for -(CH2)m-C=C-Y where m = 0 - 2 and Y implies a hydrogen, chlorine fluorine, iodine or bromine atom, an alkyl hydroxyalkyl, alkoxy-, alkyl or acyloxyalkyl group …
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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 August 3, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 3, 2010.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.