Prostaglandin derivatives, their preparation and their...

C - Chemistry – Metallurgy – 07 – C

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167/205, 260/235

C07C 405/00 (2006.01) A61K 31/557 (2006.01) C07D 257/04 (2006.01)

Patent

CA 1326021

ABSTRACT Prostaglandin derivatives having an oxo group at specified positions in the .alpha. side chain and having the formula (I): Image (I) (in which R1 - R5 represent hydrogen or various organic groups, m is 0 - 5 and n is 2 - 5) have a variety of physiological effects, notably a strong anti-ulcer activity accompanied by a limited ability to inhibit blood platelet aggregation. They may be prepared by the oxidation of a corresponding compound in which the oxo group in the cyclopentane ring, and optionally that in the a side chain, is replaced by a hydroxy group.

556820

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