Conclusions
In eductive splitting of 16α,17α-cyclopropano-20-ketopregnanes with lithium in liquid ammonia, followed by an action of electrophilic reagents on the 20-enolate formed, a regio- and stereospecific functionalization of the C17 center takes place.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 6, pp. 1384–1387, June, 1981.
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Kamernitskii, A.V., Kulikova, L.E. & Levina, I.S. Transformed steroids. Russ Chem Bull 30, 1108–1110 (1981). https://doi.org/10.1007/BF00950306
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DOI: https://doi.org/10.1007/BF00950306