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US3580936A Expired / Lapsed US ⏱️ 0.0 years remaining

5beta-taurocholenic acids and 5beta-taurocholadienic acids

Assignee: Merck and Co Inc
•
Filing: 1968-10-02
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Granted: 1971-05-25
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Expires: 1988-10-02
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Abstract

Abstract 5B-TAUROCHOLENIC ACIDS WHEREIN THE DOUBLE BOND MAY BE EITHER IN THE 22-POSITION OF THE ALIPHATIC CHAIN OR WITHIN THE CHOLANE RING; AND 5B-TAUROCHOLADIENIC ACIDS WHEREIN ONE DOUBLE BOND IS IN THE 22-POSITION OF THE CHAIN AND THE SECOND IS WITHIN THE CHOLANE NUCLEUS; AND THE SALTS, ESTERS AND AMIDE DERIVATIVES THEREOF. THE INSTANT PRODUCTS MAY BE OBTAINED: (1) VIA THE REACTION OF 5B-CHOLENIC ACID OR 5B-CHOLADIENIC ACID WITH AN ALKYL HALOFORMATE IN THE PRESENCE OF A BASE TO AFFORD A 5B-CHOLENIC ALKYLCARBONIC ANHYDRIDE OR 5B-CHOLADIENIC ALKYLCARBONIC ANHYDRIDE, WHICH INTERMEDIATE IS THEN TREATED WITH TAURINE IN A BASIC MEDIUM TO YIELD THE DESIRED 5B-TAUROCHOLENIC ACID SALT OR 5B-TAUROCHOLADIENIC ACID SALT; OR (2) BY THE REACTION OF THE ACID HALIDE OF CHOLENIC ACID WITH EITHER TAURINE OR WITH A SUITABLE TAURINE SALT IN THE PRESENCE OF A BASE. THE PRODUCTS ARE HYPOCHOLESTEROLEMICS AND HYPOLIPEMICS WHICH HAVE UTILITY IN THE TREATMENT OF CONDITIONS ASSOCIATED WITH BLOOD LIPID DEPOSITION.

Inventors

  • 👤 Arthur A Patchett
  • 👤 John Hannah

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 13:59
CPC Classifications
C; C07; C07J; C07J9/00; A; A61; A61K; A61K31/00; A61K31/56; A61K31/575; C07J41/00

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-05-24 1974-11-23 1975-05-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-24 1978-11-23 1979-05-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-24 1982-11-23 1983-05-25 $7700.00 Window Closed / Lapsed

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