Summary
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1.
By the selective and exhaustive hydrogenation of (±)-8,14-didehydro-D-homoestrone (I) we obtained (±)-8-dehydro-D-homoestrone (II) and (±)-8-iso-D-homoestrone (III), respectively. By the reduction of (±)-8-dehydeo-D-homoestrone 3-(tetrahydropyran-2yl) ether (IV) with potassium in liquid ammonia with subsequent hydrolysis we synthesized (±)-D-homoestrone (VI). (±)-D-Homoestrone (VI) was also prepared in good yield by the demethylation of (±)-D-homoestrone 3-methyl ether (VII).
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2.
The reduction of the ketones (I), (II), (III), and (VI) with lithium aluminum hydride led stereospecifically and in high yields to the corresponding 17α,β-hydroxy compounds.
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Translated from Izvestiya Akademii Nauk SSSR, Seria Khimicheskaya, No. 10, pp. 1814–1819, October, 1964
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Limanov, V.E., Ananchenko, S.N. & Torgov, I.V. Synthesis of (±)-D-homoestrone, (±)-8-iso-D-homoestrone, and the corresponding estradiols. Russ Chem Bull 13, 1720–1724 (1964). https://doi.org/10.1007/BF00849435
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DOI: https://doi.org/10.1007/BF00849435