Crystallization of optical isomers of leukotriene antagonists

Details Crystallization of optical isomers of leukotriene antagonists Crystallization of optical isomers of leukotriene antagonists

1991-12-12

1993-05-25

Dees, Jose G.

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

Organic compounds

Carboxylic acids and salts thereof

548253, 549496, 560 12, 560 16, 562426, 562429, 562430, C07B 5700, C07D40314, C07D30736

Patent

active

052142019

ABSTRACT:
This invention relates to certain salts of leukotriene antagonists and the use of a particular amine to form these salts as a means for selectively crystallizing optical isomers of the leukotriene antagonists disclosed herein.

REFERENCES:
patent: 4845272 (1989-07-01), Nohira et al.
patent: 4904822 (1990-02-01), Nohira et al.
patent: 4931587 (1990-06-01), Piselli
patent: 4939295 (1990-07-01), Merli et al.

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