Aromatic acids

Details Aromatic acids Aromatic acids

1994-09-30

1996-12-24

Sayala, Chhaya D.

Chemistry: natural resins or derivatives; peptides or proteins;

Proteins, i.e., more than 100 amino acid residues

Chemical modification or the reaction product thereof, e.g.,...

530406, 530408, 530350, C07K 1107

Patent

active

055874614

ABSTRACT:
The invention relates to novel aromatic acids, especially to compounds of formula ##STR1## wherein R.sub.1 is lower alkyl, R.sub.2 is lower alkyl, R.sub.3 is hydrogen, carboxy or sulfo, R.sub.4 is carboxy or sulfo, G is an unsubstituted or substituted 1,4-phenylene group or an unsubstituted or substituted 1,4-naphthylene group, and wherein either R.sub.5 and R.sub.6 together are an additional bond and L is an oxygen or sulfur atom or wherein R.sub.5 is hydrogen, R.sub.6 is halomethyl and L is an oxygen atom, and salts thereof, to the use of compounds I and their salts, to a process for the preparation of compounds I and their salts, to starting materials used in that preparation process, and salts thereof, to a process for the preparation of those starting materials and their salts, to a device in which the compounds I and their salts are used, and to a process in which that device is used. The compounds of formula I can be used as adjuncts in the investigation of proteins and can be prepared in a manner known per se.

REFERENCES:
patent: 4837310 (1989-06-01), Morimitsu et al.
patent: 5192332 (1993-03-01), Lang et al.
patent: 5229503 (1993-07-01), Chang
patent: 5382659 (1995-01-01), Chang

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