C - Chemistry – Metallurgy – 07 – J
Patent
C - Chemistry, Metallurgy
07
J
C07J 53/00 (2006.01) A61K 31/565 (2006.01)
Patent
CA 2056638
The present invention is directed to a group of androstane compounds which contain an ethylene radical bridging the 2- and 19-positions. These compounds are useful as aromatase inhibitors and they are prepared by the cyclization of a 19-[2-(4-toluenesulfonyloxy)ethyl]androst- 4-ene-3,17-dione using a strong base.
Burkhart Joseph P.
Johnston J. O.
Peet Norton P.
Merrell Pharmaceuticals Inc.
Osler Hoskin & Harcourt Llp
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