ES285755A1 - A procedure for the preparation of the 17- (1º-alcoxy) -alquºlicos and (1º-alcoxi) -cicloalquºlicos of 17-beta-hidroxiandrostanes (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of the 17- (1º-alcoxy) -alquºlicos and (1º-alcoxi) -cicloalquºlicos of 17-beta-hidroxiandrostanes (Machine-translation by Google Translate, not legally binding)
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Francesco Vismara SpA
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Francesco Vismara SpA
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A process for the preparation of the 17- (1'-alkoxy) -alkyl and (1'-alkoxy) -cycloalkyl ethers of 17beta-hydroxyandrostanes of formula ** (See formula) ** wherein W represents an alkyl group with 1 to 3 carbon atoms, A and B represent an alkyl group with 1 to 3 carbon atoms or, together with the carbon atom to which they are attached, form a cyclopentyl or cyclohexyl nucleus and S completes the steroid nucleus, characterized in that the corresponding 17beta-hydroxy steroid is first reacted (whose hydroxy group, optionally present in position 3, is protected in the form of lower alkyl ether or lower alkanoyl ester) with a functional derivative of an aliphatic or cycloaliphatic ketone of formula ** (See formula) ** wherein A and B have the meaning set forth above, and then hydrolyzed in an alkaline medium, if necessary, the ester group in position 3. (Machine-translation by Google Translate, not legally binding)
ES285755A1962-02-281963-02-27A procedure for the preparation of the 17- (1º-alcoxy) -alquºlicos and (1º-alcoxi) -cicloalquºlicos of 17-beta-hidroxiandrostanes (Machine-translation by Google Translate, not legally binding)
ExpiredES285755A1
(en)
A procedure for the preparation of the 17- (1º-alcoxy) -alquºlicos and (1º-alcoxi) -cicloalquºlicos of 17-beta-hidroxiandrostanes (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of the 17- (1º-alcoxy) -alquºlicos and (1º-alcoxi) -cicloalquºlicos of 17-beta-hidroxiandrostanes (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of cicloalcenºlicos etheries of 17-betahidroxi-androstanos (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of 3-or2'-amino tiazolo - (5 ', 4'-16,17) - estra 1,3,5 (10), 16-tetraens. (Machine-translation by Google Translate, not legally binding)