C-17 spirolactonization and 6,7 oxidation of steroids

Details C-17 spirolactonization and 6,7 oxidation of steroids C-17 spirolactonization and 6,7 oxidation of steroids

C - Chemistry, Metallurgy

07

J

C07J 71/00 (2006.01) C07J 1/00 (2006.01) C07J 21/00 (2006.01) C07J 75/00 (2006.01)

Patent

CA 2480151

Novel processes for the C-17 spirolactonization and 6,7 oxidation of steroid compounds are provided. In certain preferred embodiments, the present invention provides for the preparation of steroid compounds which are useful in the preparation of methyl hydrogen 9,11.alpha.-epoxy-17.alpha.-hydroxy-3- oxopregn-4-ene-7.alpha., 21-dicarboxylate, -lactone (otherwise referred to as eplerenone or epoxymexrenone).

L'invention concerne de nouveaux procédés de C-17 spirolactonisation et d'oxydation 6,7 de composés stéroïdes. Dans certains modes de réalisation préférés, l'invention concerne la préparation de composés stéroïdes pouvant servir à la préparation de méthyle hydrogène 9,11.alpha.-époxy-17.alpha.-hydroxy-3-oxopregn-4-ène-7.alpha.,21dicarboxylate, .UPSILON.-lactone (également appelé éplérone ou époxymexrénone).

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