Process for the production of 17.alpha.-ethynyl-17.beta.-...

Details Process for the production of 17.alpha.-ethynyl-17.beta.-... Process for the production of 17.alpha.-ethynyl-17.beta.-...

C - Chemistry, Metallurgy

07

J

260/31

C07J 1/00 (2006.01)

Patent

CA 1250570

ABSTRACT OF THE DISCLOSURE A process and novel starting materials for the production of 17.alpha. -ethynyl-17.beta. -hydroxy-18-methyl- 4,15-estradien-3-one of Formula I Image ( I ) are disclosed. Novel 17-ketone starting materials have the Formula II Image (II), wherein R is an alkyl residue of 1-3 carbon atoms and B is the grouping Image or Image A wherein R' is an acyl group of up to 10 carbon atoms.

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