Process for the preparation of new 19-nor steroids...

Details Process for the preparation of new 19-nor steroids... Process for the preparation of new 19-nor steroids...

C - Chemistry, Metallurgy

07

J

260/2

C07J 1/00 (2006.01) C07J 21/00 (2006.01) C07J 41/00 (2006.01) C07J 43/00 (2006.01) C07J 71/00 (2006.01)

Patent

CA 1220780

PRECIS DE DIVULGATION L'invention a pour objet un procédé pour préparer les pro- duits de formule (I) : Image dans laquelle R1 = radical organique C1-18 comportant éventuellement un ou plusieurs hétéroatomes; R2 = radical hydrocarboné C1-8; X = cycle pentagonal ou hexagonal; les cycles A et B représentent les groupements : Image R' et R" = H, CN ou Alkyle C1-4; Rx = ? ou ORe; Re = H, alkyle C1-6 ou acyle; RA = Image ; R'a et R"a = Alk C1-4 soit R'a et R"a forment un hétérocycle ou Ra = acyloxy. Les produits (I) sont utiles comme médicaments.

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