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

2009-01-08

2011-10-18

Shameem, Golam M M (Department: 1622)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S452000

Reexamination Certificate

active

08039641

ABSTRACT:
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 R48is alkyl or tosyl, with an oxidizing 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 R48is alkyl or tosyl, with an oxidizing agent to form a compound of formula (Vb); and (ii) converting said compound of formula (Vb) to a compound of formula (Ib) or (Id).

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