Process for the preparation of 9(11)-dehydro steroids

Details Process for the preparation of 9(11)-dehydro steroids Process for the preparation of 9(11)-dehydro steroids

C - Chemistry, Metallurgy

07

J

260/37, 260/67

C07J 1/00 (2006.01) C07J 3/00 (2006.01) C07J 13/00 (2006.01) C07J 41/00 (2006.01) C07J 75/00 (2006.01)

Patent

CA 1294952

ABSTRACT 9(11)-dehydroandrostanes and 9(11)-dehydropregnanes are prepared by dehydrating the corresponding 9-alpha-hydroxy steroid in the presence of a Lewis acid. The corresponding 8(9)-dehydro-isomer was not detectable. The resulting products are valuable intermediates in steroid synthesis especially in the preparation of corticosteroids.

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