Conclusions
The most suitable synthesis for D7′-pentarane is the Dem'yanov-Tiffeneau rearrangement of the corresponding D6′-pentarane aminoalcohol.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2552–2557, November, 1982.
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Kamernitskii, A.V., Kulikova, L.E. & Levina, I.S. Transformed steroids Communication 131. Homologization of the D' ring in 16α,17α-cyclohexanopregnanes (D′6-pentaranes). Russ Chem Bull 31, 2251–2255 (1982). https://doi.org/10.1007/BF00958403
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DOI: https://doi.org/10.1007/BF00958403