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Synthesis and structure of 4′,4′-dimethyl[16α,17α]spiropentanopregn-4-ene-3,20-dione

✍ Scribed by I. S. Levina; L. E. Kulikova; E. V. Shulishov; I. P. Klimenko; A. V. Kamernitskii; Yu. V. Tomilov

Publisher
Springer
Year
2006
Tongue
English
Weight
259 KB
Volume
55
Category
Article
ISSN
1573-9171

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Single-crystal X-ray study T = 293 K Mean '(C±C) = 0.004 A Ê R factor = 0.038 wR factor = 0.092 Data-to-parameter ratio = 10.9 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

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Synthesis of 6α-Methyl-16α,17α-cyclohexanoprogesterone via γ-Methylenation of 16α,17. alpha.-Cyclohexanopregn-4-ene-3,20-dione. -An improved synthetic way to the title cyclohexanoprogesterone (IV) is presented. The introduction of the 6α-methyl group is achieved by regioselective γ-methylenation of