Conclusion
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1.
The synthesis of 3β-acetoxy-20-hydroxy-Δ5-bisnorchoIenealdehyde (VII), the starting material for the synthesis of ecdysone-related compounds, was accomplished.
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2.
Starting with (VII), the isomeric Δ5-cholestene-3β,20,22-triols (I and XI) were obtained by the Grignard reaction.
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Translated from Izvestiya Akademii Nauk, SSSR, Seriya Khimiya, No. 1, pp. 161–165, January, 1977.
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Sydykov, Z.S., Segal', G.M. Partial synthesis of 20 (R),22 (R)-δ5-cholestene-3β,20,22, triol. Russ Chem Bull 26, 138–141 (1977). https://doi.org/10.1007/BF00921511
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DOI: https://doi.org/10.1007/BF00921511