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JPS55164700A - 1alpha,25-dihydroxy-24-oxocholesterol, and its preparation - Google Patents

1alpha,25-dihydroxy-24-oxocholesterol, and its preparation

Info

Publication number
JPS55164700A
JPS55164700A JP7061779A JP7061779A JPS55164700A JP S55164700 A JPS55164700 A JP S55164700A JP 7061779 A JP7061779 A JP 7061779A JP 7061779 A JP7061779 A JP 7061779A JP S55164700 A JPS55164700 A JP S55164700A
Authority
JP
Japan
Prior art keywords
formula
oxocholesterol
preparation
pref
cholesterol
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.)
Pending
Application number
JP7061779A
Other languages
Japanese (ja)
Inventor
Osamu Nishikawa
Kenji Ishimaru
Toru Takeshita
Hideki Tsuruta
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.)
Teijin Ltd
Original Assignee
Teijin Ltd
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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP7061779A priority Critical patent/JPS55164700A/en
Publication of JPS55164700A publication Critical patent/JPS55164700A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Landscapes

  • Steroid Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

NEW MATERIAL:The titled compound of formula I (R1-3 are H or OH-protecting group).
USE: Intermediate for the preparation of various active vitamin D3.
PROCESS: One of the objective compound of formula I wherein R3 is H can be prepared, e.g. by oxidizing a 1α-hydroxy-24-oxocholesterol derivative of formula II with oxygen in the presence of a basic compound such as sodium-t-butoxide (pref. 1W 10mol per 1mol of the above cholesterol), pref. in a solvent such as benzene. The oxidation is preferably carried out by stirring the reaction liquid in a closed system and letting the liquid absorb 0.5W2mol of oxygen based on 1mol of the cholesterol at -20W+20°C.
COPYRIGHT: (C)1980,JPO&Japio
JP7061779A 1979-06-07 1979-06-07 1alpha,25-dihydroxy-24-oxocholesterol, and its preparation Pending JPS55164700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7061779A JPS55164700A (en) 1979-06-07 1979-06-07 1alpha,25-dihydroxy-24-oxocholesterol, and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7061779A JPS55164700A (en) 1979-06-07 1979-06-07 1alpha,25-dihydroxy-24-oxocholesterol, and its preparation

Publications (1)

Publication Number Publication Date
JPS55164700A true JPS55164700A (en) 1980-12-22

Family

ID=13436736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7061779A Pending JPS55164700A (en) 1979-06-07 1979-06-07 1alpha,25-dihydroxy-24-oxocholesterol, and its preparation

Country Status (1)

Country Link
JP (1) JPS55164700A (en)

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