Process for making montelukast and intermediates therefor

Details Process for making montelukast and intermediates therefor Process for making montelukast and intermediates therefor

2005-03-17

2010-11-09

Seaman, D. Margaret (Department: 1625)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C514S311000

Reexamination Certificate

active

07829716

ABSTRACT:
A process for making montelukast, a pharmaceutically useful compound of the following formula and salts thereof:using a compound of formula (20)is provided.

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“An Efficient Synthesis of LTD, Antagonist L-699,392” by A.O. King et al.,J. Org. Chem. 1993, 58, pp. 3731-3735.

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