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US4012429A Expired / Lapsed US ⏱️ 0.0 years remaining

16,16-Dimethyl 9-oxo-11α-hydroxymethyl-15ε-hydroxyprosta-5(cis), 13(trans)-dienoic acid derivatives and process for the preparation thereof

Assignee: Sankyo Co Ltd
•
Filing: 1974-04-03
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Granted: 1977-03-15
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Expires: 1994-04-03
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Abstract

Abstract Prostanoic acid derivatives having the formula ##STR1## wherein A represents a straight or branched alkylene group having from one to 5 carbon atoms, R 1 represents a straight or branched alkyl group having from 4 to 10 carbon atoms and R 2 represents hydrogen atom or a straight or branched alkyl group having from one to 6 carbon atoms and pharmaceutically acceptable salts thereof. The compounds are useful as oxytocic agents and agents inhibiting the secretion of gastric acid and may be prepared by oxidizing a compound having the formula ##STR2## wherein A, R 1 and R 2 are the same as above, R 3 and R 4 are the same or different and each represents a protecting group for the hydroxyl group to give a compound having the formula ##STR3## wherein A, R 1 , R 2 , R 3 and R 4 are the same as above, removing the hydroxyl-protecting group from the latter compound and, if appropriate, salifying the product thus obtained.

Inventors

  • 👤 Kiyoshi Sakai
  • 👤 Osamu Oda
  • 👤 Takashi Yusa
  • 👤 Mitsuo Yamazaki
  • 👤 Masaaki Sasaki
  • 👤 Kazuhiko Sasagawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 21:33
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/17; C07C43/174; A; A61; A61P; A61P43/00; C07C405/00; C07D; C07D307/00; C07D307/77; C07D307/93; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 34 words
Compounds having the formula ##STR38##wherein R 1 is 1,1-dimethylpentyl and R 2 represents hydrogen atom or a straight or branched alkyl group having from one to 6 carbon atoms, and pharmaceutically acceptable salts thereof.
Claim 2
Dependent Claim 34 words
Compounds having the formula ##STR38##wherein R 1 is 1,1-dimethylpentyl and R 2 represents hydrogen atom or a straight or branched alkyl group having from one to 6 carbon atoms, and pharmaceutically acceptable salts thereof.
Claim 3
Dependent Claim 9 words
9-Oxo-11α-hydroxymethyl-15α (or β)-hydroxy-16,16-dimethylprosta-5(cis),13(trans)-dienoic acid and pharmaceutically acceptable salts thereof.
Claim 4
Dependent Claim 9 words
9-Oxo-11α-hydroxymethyl-15α (or β)-hydroxy-16,16-dimethylprosta-5(cis),13(trans)-dienoic acid and pharmaceutically acceptable salts thereof.
Claim 5
Dependent Claim 4 words
Methyl 9-oxo-11α-hydroxymethyl-15α (or β)-hydroxy-16,16-dimethylprosta-5(cis),13(trans)-dienoate.
Claim 6
Dependent Claim 4 words
Methyl 9-oxo-11α-hydroxymethyl-15α (or β)-hydroxy-16,16-dimethylprosta-5(cis),13(trans)-dienoate.
Claim 7
Dependent Claim 4 words
Potassium 9-oxo-11α-hydroxymethyl-15α (or β)-hydroxy-16,16-dimethylprosta-5(cis),13(trans)-dienoate.
Claim 8
Dependent Claim 4 words
Potassium 9-oxo-11α-hydroxymethyl-15α (or β)-hydroxy-16,16-dimethylprosta-5(cis),13(trans)-dienoate.

References Cited (Backward Citations)

US3816393A Cited
DE2313868A1 Cited
US3849474A Cited
NL7311403A Cited
US3845042A Cited
US3931282A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-03-14 1980-09-13 1981-03-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-03-14 1984-09-13 1985-03-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-03-14 1988-09-13 1989-03-15 $7700.00 Window Closed / Lapsed

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