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ES401041A1 - A procedure for the preparation of 17 alpha etinil-stryles. (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure for the preparation of 17 alpha etinil-stryles. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES401041A1
ES401041A1 ES401041A ES401041A ES401041A1 ES 401041 A1 ES401041 A1 ES 401041A1 ES 401041 A ES401041 A ES 401041A ES 401041 A ES401041 A ES 401041A ES 401041 A1 ES401041 A1 ES 401041A1
Authority
ES
Spain
Prior art keywords
formula
translation
procedure
preparation
machine
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
ES401041A
Other languages
Spanish (es)
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.)
Eli Lilly and Co
Original Assignee
Eli Lilly and Co
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 US127771A external-priority patent/US3697558A/en
Application filed by Eli Lilly and Co filed Critical Eli Lilly and Co
Publication of ES401041A1 publication Critical patent/ES401041A1/en
Expired legal-status Critical Current

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Abstract

A procedure for the preparation of 17α-ethinylestriols of formula II **(See formula)** where R'' is hydrogen, C1-C3 alkyl or C5-C6 cycloalkyl, whose process is characterized by: (1) reacting a mixture of isomers of the following formulas II and III **(See formula)** where R'' is as defined above, with acetone in the presence of an acid to give a compound of formula IV **(See formula)** where R'' has the meaning given above, separating said acetonide by chromatography from the desired compound of formula II and recovering said compound of formula II and, if desired, (2) when R'' is hydrogen, reacting a metal salt of 17α-ethinylestriol with a C5-C6 cycloalkyl halide in dimethylformamide to give the C5-C6 cycloalkyl ether of formula V **(See formula)** where R3 is C5-C6 cycloalkyl. (Machine-translation by Google Translate, not legally binding)
ES401041A 1971-03-24 1972-03-21 A procedure for the preparation of 17 alpha etinil-stryles. (Machine-translation by Google Translate, not legally binding) Expired ES401041A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12769071A 1971-03-24 1971-03-24
US127771A US3697558A (en) 1971-03-24 Preparation of 17alpha-ethynylestriol

Publications (1)

Publication Number Publication Date
ES401041A1 true ES401041A1 (en) 1975-07-01

Family

ID=26825881

Family Applications (1)

Application Number Title Priority Date Filing Date
ES401041A Expired ES401041A1 (en) 1971-03-24 1972-03-21 A procedure for the preparation of 17 alpha etinil-stryles. (Machine-translation by Google Translate, not legally binding)

Country Status (2)

Country Link
ES (1) ES401041A1 (en)
HU (2) HU164892B (en)

Also Published As

Publication number Publication date
HU164892B (en) 1974-05-28
HU165337B (en) 1974-08-28

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