ES8605537A1 - Cyclic ketal(s) prodn. - Google Patents

Cyclic ketal(s) prodn.

Info

Publication number
ES8605537A1
ES8605537A1 ES544825A ES544825A ES8605537A1 ES 8605537 A1 ES8605537 A1 ES 8605537A1 ES 544825 A ES544825 A ES 544825A ES 544825 A ES544825 A ES 544825A ES 8605537 A1 ES8605537 A1 ES 8605537A1
Authority
ES
Spain
Prior art keywords
alkyl
cyclic ketal
prodn
alkenyl
cyclic
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
ES544825A
Other languages
Spanish (es)
Other versions
ES544825A0 (en
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.)
Especialidades Latinas Medicamentos Universales SA
Original Assignee
Especialidades Latinas Medicamentos Universales 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 Especialidades Latinas Medicamentos Universales SA filed Critical Especialidades Latinas Medicamentos Universales SA
Priority to ES544825A priority Critical patent/ES8605537A1/en
Publication of ES8605537A1 publication Critical patent/ES8605537A1/en
Publication of ES544825A0 publication Critical patent/ES544825A0/en
Expired legal-status Critical Current

Links

Abstract

Cyclic corticoids and their 21C-esters, of formula (I) (where X and X1 = H or F, A = satd. or double bond, R = H or 1-12C alkyl, R1 = H or 1-4C alkyl or alkenyl and R2 = 1-12C alkyl or alkenyl) are made by (a) reaction of 1 mole corticoid with 1.5 moles aldehyde or ketone, in dioxane contg. perchloric acid, under anhydrous conditions; (b) sepn. and purificn. of the cyclic ketal formed; and (c) soln. in pyridine and treatment with the appropriate anhydride to form the required ester.
ES544825A 1985-07-03 1985-07-03 Cyclic ketal(s) prodn. Expired ES8605537A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES544825A ES8605537A1 (en) 1985-07-03 1985-07-03 Cyclic ketal(s) prodn.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES544825A ES8605537A1 (en) 1985-07-03 1985-07-03 Cyclic ketal(s) prodn.

Publications (2)

Publication Number Publication Date
ES8605537A1 true ES8605537A1 (en) 1986-02-01
ES544825A0 ES544825A0 (en) 1986-02-01

Family

ID=8489463

Family Applications (1)

Application Number Title Priority Date Filing Date
ES544825A Expired ES8605537A1 (en) 1985-07-03 1985-07-03 Cyclic ketal(s) prodn.

Country Status (1)

Country Link
ES (1) ES8605537A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10711032B2 (en) 2016-11-08 2020-07-14 Regeneron Pharmaceuticals, Inc. Steroids and protein-conjugates thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10711032B2 (en) 2016-11-08 2020-07-14 Regeneron Pharmaceuticals, Inc. Steroids and protein-conjugates thereof

Also Published As

Publication number Publication date
ES544825A0 (en) 1986-02-01

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20051017