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US4153803A Expired / Lapsed US ⏱️ 0.0 years remaining

Cholesterol-lowering phenoxyalkanoic acid esters

Assignee: Siegfried AG
•
Filing: 1977-03-01
•
Granted: 1979-05-08
•
Expires: 1997-03-01
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Abstract

Abstract Compounds possessing pharmaceutical activity as substances able to lower the level of fatty substances in the blood possess the following general formula: ##STR1## wherein R represents hydrogen, halogen, hydroxy or alkyl or alkoxy containing from 1 to 4 carbon atoms; A 1 and A 2 which can be the same or different are hydrogen or alkyl containing from 1 to 9 carbon atoms such that A 1 and A 2 contain together not more than 10 carbon atoms, Y is oxygen, in which case X is benzyl, benzyloxy or benzylthio or benzyl, benzyloxy or benzylthio substituted by R and Z is amine, azacyclohydrocarbyloxy cycloalkoxy containing from 3 to 6 ring carbon atoms or tertiary aminoalkoxy or pivaloyloxyalkoxy in which the alkoxy group contains from 1 to 3 carbon atoms, or X is hydrogen and Z is pivaloyloxyalkoxy in which the alkoxy group contains from 1 to 3 carbon atoms, or Y is oxygen, X is benzyl, benzyloxy or benzylthio or benzyl, benzyloxy or benzylthio substituted by R and Z is alkoxy containing from 1 to 4 carbon atoms, hydroxy or O - M + , M being a metal cation of Main Groups I, II or III of the Periodic System of the Elements or an organic base cation or ammonium ion, A 1 and A 2 being the same and being as aforesaid or being different with one of A 1 and A 2 being hydrogen or both being hydrogen and X being a para substituent with respect to Y in the benzene ring in the same general formula, Y is oxygen, X is hydrogen and Z is amine, azacyclohydrocarbyloxy or pivaloyloxyalkoxy in which the alkoxy group contains from 1 to 3 carbon atoms, Or Y is sulphur, in which case X is hydrogen, benzyl, benzyloxy or benzylthio or benzyl, benzyloxy or benzylthio substituted by R and Z is amine, azacyclohydrocarbyloxy, alkoxy containing from 1 to 4 carbon atoms, hydroxy, O - M + wherein M is a metal cation of Main Groups I, II or III of the Periodic System of The Elements or an organic base cation or ammonium ion, cycloalkoxy containing from 3 to 6 ring carbon atoms or tertiaryaminoalkoxy, pivaloyloxyalkoxy or pyridyl-C-alkoxy in which the alkoxy group contains from 1 to 3 carbon atoms, and pharmacologically acceptable acid addition and quaternary ammonium salts of compounds containing basic groups, and optical isomers of said compounds when A 1 and A 2 are different.

Inventors

  • 👤 Kurt Thiele
  • 👤 Quazi Ahmed
  • 👤 Rudolf Adrian
  • 👤 Ulrich Jahn

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 18:07
CPC Classifications
C; C07; C07C; C07C321/00; C07C59/00; C07C59/40; C07C59/58; C07C59/64; C07C59/66; C07C59/68; C07C59/70; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/46; C07D473/00; C07D473/02; C07D473/04; C07D473/06; C07D473/08

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 27 words
A compound of the formula ##STR25## wherein A 1 and A 2 are individually selected from the group consisting of hydrogen and C 1 -C 4 alkyl.
Claim 2
Dependent Claim 27 words
A compound of the formula ##STR25## wherein A 1 and A 2 are individually selected from the group consisting of hydrogen and C 1 -C 4 alkyl.
Claim 3
Dependent Claim 10 words
A compound according to claim 1, which is pivaloyloxymethyl p-(p'-chlorobenzyl)phenoxyacetate.
Claim 4
Dependent Claim 10 words
A compound according to claim 1, which is pivaloyloxymethyl 2-[p-(p'-chlorobenzyl)phenoxy]propionate.
Claim 5
Dependent Claim 10 words
A compound according to claim 1, which is pivaloyloxymethyl 2-methyl-2-[p-(p'chlorobenzyl)phenoxy]propionate.
Claim 6
Dependent Claim 10 words
A compound according to claim 1, which is pivaloyloxymethyl 2-methyl-2-[p-(p'-chlorobenzyl)phenoxy]butyrate.

References Cited (Backward Citations)

GB705251A Cited
US3262850A Cited
US3332842A Cited
US3362997A Cited
US3332957A Cited
US3716583A Cited
DE2356655A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-05-07 1982-11-06 1983-05-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-05-07 1986-11-06 1987-05-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-05-07 1990-11-06 1991-05-08 $7700.00 Window Closed / Lapsed

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