Intermediate compound which is used for the preparation of...

Details Intermediate compound which is used for the preparation of... Intermediate compound which is used for the preparation of...

2008-05-20

2008-05-20

Andres, Janet L. (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S335000

Reexamination Certificate

active

07375231

ABSTRACT:
The present invention relates to a novel compound of formula (IV)which is an intermediate that can be used for the preparation of pioglitazone. It also relates to a method of obtaining the novel compound (IV) starting from the natural product L-tyrosine, in which the amino group is protected in the form of aromatic imino group, and a method of obtaining pioglitazone from the said intermediate.

REFERENCES:
patent: 4687777 (1987-08-01), Meguro et al.
patent: 8-325263 (1996-12-01), None
patent: WO 9638415 (1996-12-01), None
patent: 02/088120 (2002-11-01), None
West, Anthony R., Solid State Chemistry and its Applications, Wiley, New York, 1988, pp. 358 & 365.
Patent Abstract of Japan of 2000-344748 dated Dec. 12, 2000.

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