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GB811651A - Improvements in or relating to tachysterol - Google Patents

Improvements in or relating to tachysterol

Info

Publication number
GB811651A
GB811651A GB14428/56A GB1442856A GB811651A GB 811651 A GB811651 A GB 811651A GB 14428/56 A GB14428/56 A GB 14428/56A GB 1442856 A GB1442856 A GB 1442856A GB 811651 A GB811651 A GB 811651A
Authority
GB
United Kingdom
Prior art keywords
tachysterol
precalciferol
calciferol
dinitrobenzoate
isolated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB14428/56A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanofi Aventis France
Original Assignee
Roussel Uclaf SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roussel Uclaf SA filed Critical Roussel Uclaf SA
Publication of GB811651A publication Critical patent/GB811651A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C401/00—Irradiation products of cholesterol or its derivatives; Vitamin D derivatives, 9,10-seco cyclopenta[a]phenanthrene or analogues obtained by chemical preparation without irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/14—The ring being saturated
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
    • C07C2601/16—Systems containing only non-condensed rings with a six-membered ring the ring being unsaturated
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2602/00—Systems containing two condensed rings
    • C07C2602/02—Systems containing two condensed rings the rings having only two atoms in common
    • C07C2602/14—All rings being cycloaliphatic
    • C07C2602/24—All rings being cycloaliphatic the ring system containing nine carbon atoms, e.g. perhydroindane

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Tachysterol is obtained by irradiating with ultra-violet light precalciferol in solution in a solvent therefore at a temperature comprised between -20 DEG C. and +20 DEG C. whereby an equilibrium mixture of precalciferol and tachysterol results. Irradiation may be effected in ether or ethoxyethanol, preferably between -5 DEG C. and +2 DEG C. The tachysterol may be isolated by combining it with citraconic anhydride or by forming its toluyl ester. The unconverted precalciferol may then be transformed to calciferol which is recovered for example as its 3,5-dinitrobenzoate. In an example, tachysterol is isolated in combination with citraconic acid which is acetylated to form the acetate of tachysterol-citraconic anhydride and the calciferol is obtained as its 3,5-dinitrobenzoate. Specification 668,114 is referred to.
GB14428/56A 1955-05-13 1956-05-09 Improvements in or relating to tachysterol Expired GB811651A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR811651X 1955-05-13

Publications (1)

Publication Number Publication Date
GB811651A true GB811651A (en) 1959-04-08

Family

ID=9261765

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14428/56A Expired GB811651A (en) 1955-05-13 1956-05-09 Improvements in or relating to tachysterol

Country Status (1)

Country Link
GB (1) GB811651A (en)

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