Tetrahydrofuro [3, 2-b] pyrrol-3-one intermediates

Details Tetrahydrofuro [3, 2-b] pyrrol-3-one intermediates Tetrahydrofuro [3, 2-b] pyrrol-3-one intermediates

C - Chemistry, Metallurgy

07

D

C07D 307/28 (2006.01) C07D 491/04 (2006.01) C07D 493/04 (2006.01)

Patent

CA 2657797

The present invention relates to a process for preparing a compound of formula (Ia), (Ib), (Ic) or (Id), or a pharmaceutically acceptable salt, hydrate, solvate, complex or prodrug thereof, said process comprising the steps of: (A) (i) treating a compound of formula (IVa), where R48 is alkyl or tosyl, with an oxidising agent to form a compound of formula (Va); and (ii) converting said compound of formula (Va) to a compound of formula (Ia) or (Ic); or (B) (i) treating a compound of formula (IVb), where R48 is alkyl or tosyl, with an oxidising agent to form a compound of formula (Vb); and (ii) converting said compound of formula (Vb) to a compound of formula (Ib) or (Id).

La présente invention concerne un procédé de préparation d'un composé de formule (Ia), (Ib), (Ic) ou (Id), ou d'un de ses sels, hydrates, solvates, complexes ou promédicaments pharmaceutiquement acceptables, ledit procédé comprenant les étapes consistant à : (A) (i) traiter un composé de formule (IVa), dans laquelle R<SUP>48</SUP> représente alkyle ou tosyle, avec un agent oxydant pour former un composé de formule (Va); et (ii) transformer ledit composé de formule (Va) en un composé de formule (Ia) ou (Ic); ou (B) (i) traiter un composé de formule (IVb), dans laquelle R<SUP>48</SUP> représente alkyle ou tosyle, avec un agent oxydant pour former un composé de formule (Vb); et (ii) transformer ledit composé de formule (Vb) en un composé de formule (Ib) ou (Id).

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