Conclusions
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1.
By the oxidation of 4-ethynyltetrahydro-2,5-dimethylthiopyran-4-ols with hydrogen peroxide all the four theoretically possible 4-ethynyltetrahydro-2,5-dimethylthiopyran-4-ol 1,1-dioxides were synthe-sized, and from these sulfur-containing analogs of corticosteroids with anα-ketol side chain were prepared.
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2.
The reactions of cis- and trans-tetrahydro-2,5-dimethylthiopyran-4-ones with acetylene in liquid ammonia go with predominantly axial entry of the ethynyl group.
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A. A. Akhrem and V. V. Kokhomskaya, Izv. AN SSSR, Ser. Khim.,1963, 2156.
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H. Lindlar, Helv. Chim. Acta,35, 446 (1952).
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 1974–1982, November, 1966.
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Akhrem, A.A., Kokhomskaya, V.V., Ivanova, L.I. et al. Heterocyclic analogs of corticosteroids. Russ Chem Bull 15, 1907–1913 (1966). https://doi.org/10.1007/BF01179701
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DOI: https://doi.org/10.1007/BF01179701