GB1461663A - Process for the preparation of 17-esters of 17alpha,21-dihydroxy steroids of the pregnane series and products obtained - Google Patents

Process for the preparation of 17-esters of 17alpha,21-dihydroxy steroids of the pregnane series and products obtained

Info

Publication number
GB1461663A
GB1461663A GB2754374A GB2754374A GB1461663A GB 1461663 A GB1461663 A GB 1461663A GB 2754374 A GB2754374 A GB 2754374A GB 2754374 A GB2754374 A GB 2754374A GB 1461663 A GB1461663 A GB 1461663A
Authority
GB
United Kingdom
Prior art keywords
esters
phosphate
carboxylic acid
dihydroxy
acyloxy
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
GB2754374A
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.)
Lark SpA
Original Assignee
Lark SpA
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
Priority claimed from IT19058/74A external-priority patent/IT1044791B/en
Priority claimed from IT1905974A external-priority patent/IT1064067B/en
Application filed by Lark SpA filed Critical Lark SpA
Publication of GB1461663A publication Critical patent/GB1461663A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07JSTEROIDS
    • C07J51/00Normal steroids with unmodified cyclopenta(a)hydrophenanthrene skeleton not provided for in groups C07J1/00 - C07J43/00
    • 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
    • C07J9/005Normal 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 containing a carboxylic function directly attached or attached by a chain containing only carbon atoms to the cyclopenta[a]hydrophenanthrene skeleton

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Steroid Compounds (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1461663 Preparing 17-esters of 17α,21-dihydroxy steroids LARK SpA 12 Nov 1974 [4 Jan 1974 (2)] 27543/74 Heading C2U A 17 - monoester of a 17α,21 - dihydroxy steroid is prepared by esterifying the corresponding 17α,21-dihydroxy steroid 21-phosphate with a carboxylic acid, a carboxylic acid anhydride or a carboxylic acid chloride under mild conditions, then dephosphorylating the intermediate 17-acyloxy-21-phosphate by enzymatic hydrolysis using an acid phosphatase at a controlled pH. The acylating agent preferably contains up to 11 C atoms and may be mixed with a diluent. An aqueous suspension, dispersion or solution of cells or tissues or their fragments or constituents, particularly of rice bran, is preferably used for the dephosphorylation carried out in an acidic medium, particularly pH 4-5, and at 10-50‹ C. The enzymatic dephosphorylation may be carried out on the esterification reaction mixture without isolating the 17 - acyloxy - 21 - phosphate. The 17- monoesters obtained may be further esterified to 17,21-diacyl-esters with the acyl residues being the same or different. Forty-one compounds falling within the formula are novel, where R 1 is H, F, Cl, CH 3 or CF 3 ; R 2 is H, OH, CH 3 , methylene or halomethylene; R 3 is H, CF, F, OH, or keto; R 4 is H, F, Cl, Br, CH 3 or methylene; X is H, F, or Cl and R ester groups include formate, acetate, propionate, butyrate, isobutyrate, valerate, isovalerate, caproate, caprylate, palargonate, aenanthate, and benzoate.
GB2754374A 1974-01-04 1974-11-12 Process for the preparation of 17-esters of 17alpha,21-dihydroxy steroids of the pregnane series and products obtained Expired GB1461663A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19058/74A IT1044791B (en) 1974-01-04 1974-01-04 METHOD FOR THE PREPARATION OF 17 ACIL ESTERS OF 17 ALPHA 21 OF HYDROXY STEROIDS OF THE PREGNANO SERIES
IT1905974A IT1064067B (en) 1974-01-04 1974-01-04 17 Alpha, 21-dihydroxy-steroid 17-monoesters prepn. - by 17-esterifying 21-phosphates and enzymatically dephosphorylating

Publications (1)

Publication Number Publication Date
GB1461663A true GB1461663A (en) 1977-01-19

Family

ID=26327038

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2754374A Expired GB1461663A (en) 1974-01-04 1974-11-12 Process for the preparation of 17-esters of 17alpha,21-dihydroxy steroids of the pregnane series and products obtained

Country Status (12)

Country Link
JP (2) JPS5096558A (en)
AU (1) AU7050774A (en)
CA (1) CA1034521A (en)
CH (1) CH606096A5 (en)
DE (2) DE2431377A1 (en)
DK (2) DK132661C (en)
FI (1) FI189274A7 (en)
FR (2) FR2256926B1 (en)
GB (1) GB1461663A (en)
IL (1) IL45142A0 (en)
NL (2) NL7408524A (en)
SE (1) SE408898B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104610414A (en) * 2013-11-05 2015-05-13 河南利华制药有限公司 Prednisolone sodium phosphate production technology
CN109988212A (en) * 2019-04-22 2019-07-09 河南利华制药有限公司 A kind of Inflamase production method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4154748A (en) * 1978-01-20 1979-05-15 The Upjohn Company Phosphate catalyzed acylation of steroidal tertiary alcohols
IT202000006442A1 (en) * 2020-03-27 2021-09-27 Genetic S P A BUDESONIDE 21-PHOSPHATE SALTS AND PHARMACEUTICAL COMPOSITIONS CONTAINING THE SAME

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS421686Y1 (en) * 1964-05-02 1967-02-02
JPS4617693Y1 (en) * 1966-09-23 1971-06-21

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104610414A (en) * 2013-11-05 2015-05-13 河南利华制药有限公司 Prednisolone sodium phosphate production technology
CN104610414B (en) * 2013-11-05 2016-08-31 河南利华制药有限公司 A kind of production technology of Inflamase
CN109988212A (en) * 2019-04-22 2019-07-09 河南利华制药有限公司 A kind of Inflamase production method
CN109988212B (en) * 2019-04-22 2020-11-20 河南利华制药有限公司 Prednisolone sodium phosphate production method

Also Published As

Publication number Publication date
NL7416691A (en) 1975-07-08
JPS5096558A (en) 1975-07-31
FI189274A7 (en) 1975-07-05
JPS5096559A (en) 1975-07-31
FR2256926B1 (en) 1977-07-08
SE408898B (en) 1979-07-16
SE7408296L (en) 1975-07-07
DE2461512A1 (en) 1975-07-24
FR2256926A1 (en) 1975-08-01
DK689774A (en) 1975-09-01
DE2431377A1 (en) 1975-07-17
CA1034521A (en) 1978-07-11
DK342774A (en) 1975-09-01
DK132661C (en) 1976-06-28
DK132661B (en) 1976-01-19
FR2256763A1 (en) 1975-08-01
CH606096A5 (en) 1978-10-13
NL7408524A (en) 1975-07-08
AU7050774A (en) 1976-01-08
IL45142A0 (en) 1974-09-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee