GB785681A - Steroid compounds - Google Patents

Steroid compounds

Info

Publication number
GB785681A
GB785681A GB25642/53A GB2564253A GB785681A GB 785681 A GB785681 A GB 785681A GB 25642/53 A GB25642/53 A GB 25642/53A GB 2564253 A GB2564253 A GB 2564253A GB 785681 A GB785681 A GB 785681A
Authority
GB
United Kingdom
Prior art keywords
keto
convertible
acid hydrolysis
acid
group
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
GB25642/53A
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.)
Merck and Co Inc
Original Assignee
Merck and Co Inc
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 Merck and Co Inc filed Critical Merck and Co Inc
Publication of GB785681A publication Critical patent/GB785681A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J9/00—Normal 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J75/00—Processes 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 compounds having the formul : <FORM:0785681/IV (a)/1> in which (Formula I) the 3-position is occupied by either a divalent group convertible to keto by acid hydrolysis, e.g. a cyclic acetal, or by a pair of univalent groups together convertible to a single keto group by acid hydrolysis, e.g. a non-cyclic acetal or in which (Formula II) the 3-position is occupied by a univalent group which is convertible to keto by acid hydrolysis, e.g. an enol ether and their preparation from the corresponding 17-acetyl compound by treatment with an oxalic acid diester, e.g. dimethyl oxalate in the presence of a strong alkali, e.g. sodamide, sodium hydride and sodium triphenylmethyl, or of an alkali-metal alkoxide, e.g. sodium methoxide. Examples disclose the production of d and dl-D 5-3-ethylenedioxy-11-keto-etrenoylpyruvic acid. Specifications 763,208, 777,691, 777,693, 785,683 and 785,684 are referred to.
GB25642/53A 1952-09-17 1953-09-16 Steroid compounds Expired GB785681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US785681XA 1952-09-17 1952-09-17

Publications (1)

Publication Number Publication Date
GB785681A true GB785681A (en) 1957-11-06

Family

ID=22144869

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25642/53A Expired GB785681A (en) 1952-09-17 1953-09-16 Steroid compounds

Country Status (1)

Country Link
GB (1) GB785681A (en)

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