11 .beta.-(4-ISOPREPENYLPHENYL)ESTRA-4,9-DIENES, THEIR PRODUCTION, AND PHARMACEUTICAL PREPARATIONS CONTAINING SAME
CA 1289944 C · Owner: Wiechert, Rudolf · Inventors: Elger, Walter; Wiechert, Rudolf; Ottow, Eckhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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11 .beta.-(4-isopropenylphenyl)-estra-4,9-dienes of general Formula I, (I), wherein, X is an oxygen atom or a hydroxyimino grouping N ? OH, R1 is a hydrogen atom or a methyl group R2 is a hydrogen atom or an acyl residue of 1-10 carbon atoms, R3 is a hydrogen atom the cyanomethyl group, -(CH2)n-, CH2Z, -CH=CH-(CH2)mZ or -C?C-Y wherein n = 0 to 5 and m = 1 to 4, Z meaning a hydrogen atom or the OR4 group with R4 meaning a hydrogen atom, an alkyl or alXanoyl group each of 1-4 carbon atoms, and Y meaning a hydrogen, chlorine fluorine, iodine or bromine atom, an alkyl hydroxyalkyl, alkoxyalkyl or acyloxyalkyl group each of 1-4 carbon atoms in the alkyl or acyl residue, possess …
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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 October 1, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2008.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.