Process for preparing substituted pyridines

Details Process for preparing substituted pyridines Process for preparing substituted pyridines

2005-01-18

2005-01-18

Davis, Zinna Northington (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S345000, C546S346000

Reexamination Certificate

active

06844441

ABSTRACT:
A process for preparing a compound of the formula:wherein n, R1, R2, R3and X are as defined above, used as an intermediate in the synthesis of β-adrenergic receptor agonists.

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J.Y.L. Chung, et al.,Practical chemoenzymatic synthesis of a 3-pyrodylethanolamino β3adrenergic receptor agonist. Tetrahedron Letters, vol. 40, 1999, pp. 6739-6743.
E. R. Parmee, et al.,Human β3Adrenergic Receptor Agonists Containing Cyclic Ureidobenzenesulfonamides, Bioorganic&Medicinal Chemistry Letters, vol. 9, 1999, pp. 749-754.
E. M. Naylor, et al.,Human β3Adrenergic Receptor Agonists Containing Imidazolidinone and Imidazolone Benzenesulfonamides, Bioorganic&Medicinal Chemistry Letters, vol. 9, 1999, pp. 755-758.
T. L. Shih, et al.,L-770,664: A Potent and Selective Human β3Adrenergic Receptor Agonist with Improved Oral Bioavailability, Bioorganic&Medicinal Chemistry Letters, vol. 9, 1999, pp. 1251-1254.
*English language equivalent of WO/0048997.
Naylor, E. M., et al.,3-Pyridylethanolamines: Potent and Selective Human β3Adrenergic Recepter Agonists, Biorganic&Medicinal Chemistry Letters, 8, (1998), pp. 3087-3092.
Database Crossfire Beilstein Online! Database accession # BRN 4182021, XP002229586, & Jahangir, W., et al., Can. J. Chem., vol. 68, No. 4, 1990, pp. 587-591.

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