American Home Products Corporation

Chester E Orzech

Steven Jay Adelman

Frederick O Gemmill, Jr

This invention relates to treating Alzheimer's disease with 8.alpha.-3-hydroxyestra-1,3,5(10),9(11)tetraen-17-one (.DELTA.9(11)-dehydro-8-isoestrone) (VI), ##STR1## or a pharmaceutically acceptable salt thereof.

.DELTA.9(11)-dehydro-8-isoestrone used to treat alzheimer's disease

This invention relates to 8.alpha.-3-hydroxyestra-1,3,5(10),9(11)tetraen-17-one (.DELTA.9(11)-dehydro-8-isoestrone) (VI), ##STR1## to the process for its preparation, to pharmaceutical compositions containing said 8.alpha.-3-hydroxyestra-1,3,5(10),9(11)tetraen-17-one (.DELTA.9(11)-dehydro-8-isoestrone) (VI) and to the use of said 8.alpha.-3-hydroxyestra-1,3,5(10),9(11)tetraen-17-one (.DELTA.9(11)-dehydro-8-isoestrone) (VI) for modifying the balance between bone production and bone resorption, and as an antioxidant in a host animal, including man.

Method of modifying bone resorption with

This invention relates to 8.alpha.-3-hydroxyestra- 1,3,5( 10),9( 11 )tetraen-17-one (.DELTA.9( 11 )-dehydro-8-isoestrone) (VI), ##STR1## to the process for its preparation, to pharmaceutical compositions containing said 8.alpha.-3-hydroxyestra- 1,3,5(10), 9(11)tetraen-17-one (.DELTA.9(11)-dehydro-8-isoestrone) (VI) and to the use of said 8.alpha.-3-hydroxyestra-1,3,5(10),9(11 )tetraen-17-one (A9( 11 )-dehydro-8-isoestrone) (VI) for modifying the balance between bone production and bone resorption, and as an antioxidant in a host animal, including man.

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Rouses Point, NY, United States of America

Chester E Orzech