US Patent Application 20100063157 - CHEMICAL PROCESS AND NEW CRYSTALLINE FORM

Application 20100063157 Filed on March 30, 2005. Published on March 11, 2010

Abstract Claims Description Full Text

Inventor

CAINE, Darren Michael

US Classes

514/629, R is hydrogen or a lower saturated alkyl of less than seven carbons564/221Plural rings in a substituent E

Attorney, Agent or Firm

GLAXOSMITHKLINE;CORPORATE INTELLECTUAL PROPERTY, MAI B482

Foreign Documents

0407521.4 GB 04/02/2004
0411688.5 GB 05/25/2004

International Classes

A61K 31/165
C07C 233/07
A61P 11/00

Issued Patent Number:

7846973

Abstract text

The present invention relates to the preparation of a β₂adrenergic agonist in crystalline salt form. In particular the invention relates to preparation of a crystalline salt of compound (I)

in particular a crystalline monohydrochloride salt. The invention also relates to a new crystalline form (polymorph) of the monohydrochloride salt of compound (Ia) and a process for preparing it.

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