13.alpha.-alkylgonan-delta _____-5,10-epoxides

Details 13.alpha.-alkylgonan-delta _____-5,10-epoxides 13.alpha.-alkylgonan-delta _____-5,10-epoxides

C - Chemistry, Metallurgy

07

J

260/14, 204/91.2

C07J 71/00 (2006.01)

Patent

CA 1289135

Abstract of the Disclosure 13alpha-alkylgonan-delta9(11)-5,10 expoxides of the formula Image in which R is hydrogen, methyl or ethyl and Z is a ketal or thioketal group effective as a keto-blocking group, are provided by a process wherein a compound of the formula Image in which R and Z are as defined above, is irradiated with active ultraviolet radiation. They are useful as intermediates in the production of 11-beta-aryl-substituted 13-alpha-alkylgonans in good yields and in high purity.

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