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GB924588A - Improvements in or relating to a - nor - steroid derivatives - Google Patents

Improvements in or relating to a - nor - steroid derivatives

Info

Publication number
GB924588A
GB924588A GB773161A GB773161A GB924588A GB 924588 A GB924588 A GB 924588A GB 773161 A GB773161 A GB 773161A GB 773161 A GB773161 A GB 773161A GB 924588 A GB924588 A GB 924588A
Authority
GB
United Kingdom
Prior art keywords
ene
dione
radical
pregn
androst
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
GB773161A
Inventor
Tokuo Kubota
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.)
Shionogi and Co Ltd
Original Assignee
Shionogi and Co 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 Shionogi and Co Ltd filed Critical Shionogi and Co Ltd
Priority to GB773161A priority Critical patent/GB924588A/en
Publication of GB924588A publication Critical patent/GB924588A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J9/00Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J75/00Processes for the preparation of steroids in general

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Steroid Compounds (AREA)

Abstract

The invention comprises A-nor-cholest-3(5)-ene-1,2-dione, 11b ,17a ,21- trihydroxy-A-nor-pregn-3(5)-ene-1,2,20-trione and the 21-acetate thereof, and 17b -hydroxy-A-nor-androst-3(5)-ene-1,2-dione and the 17-propionate thereof, and a process for the preparation of A-nor-steroids having the following partial formula at ring A <FORM:0924588/IV(a)/1> by treating steroids having the following partial formula at ring A <FORM:0924588/IV(a)/2> wherein R represents <FORM:0924588/IV(a)/3> or an oxo radical when the 4(5) double bond is present, and wherein R represents an oxo radical when the 4(5) bond is saturated, with manganese dioxide. The steroid reactant may contain substituents in other positions such as an 11- or 17-hydroxy radical or a 17-branched chain radical. 1-#x,2#x- Dihydroxycholest- 4-en- 3-one, 1#x,2#x,11b ,17a -tetrahydroxy- 21-acetoxy-pregn-4-ene- 3,20-dione, and 1#x,2#x-dihydroxy-17b -propionyloxy-androst-4-en-3-one are prepared by treating cholesta-1,4-diene-3-one, prednisolone acetate and D 1-dehydrotestosterone propionate respectively with osmium tetroxide in pyridine.
GB773161A 1961-03-02 1961-03-02 Improvements in or relating to a - nor - steroid derivatives Expired GB924588A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB773161A GB924588A (en) 1961-03-02 1961-03-02 Improvements in or relating to a - nor - steroid derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB773161A GB924588A (en) 1961-03-02 1961-03-02 Improvements in or relating to a - nor - steroid derivatives

Publications (1)

Publication Number Publication Date
GB924588A true GB924588A (en) 1963-04-24

Family

ID=9838656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB773161A Expired GB924588A (en) 1961-03-02 1961-03-02 Improvements in or relating to a - nor - steroid derivatives

Country Status (1)

Country Link
GB (1) GB924588A (en)

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