Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1994-09-14
1995-12-19
Chang, Ceila
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C07D40106, C07D40114
Patent
active
054769426
ABSTRACT:
Compounds of the formula: ##STR1## in which R.sub.1 represents a hydrogen atom or a (C.sub.1 -C.sub.4)alkyl group, R.sub.2 represents a hydrogen atom, a (C.sub.1 -C.sub.4)alkoxycarbonyl group, a carboxyl group, a sodium carboxylate group, a group --CH.sub.2 OR.sub.4, where R.sub.4 is a hydrogen atom or R.sub.4 is a (C.sub.1 -C.sub.4) alkyl or (C.sub.1 -C.sub.4) acyl group, a group --CONR.sub.5 R.sub.6, or a group --CN.sub.4 R.sub.5, where R.sub.5 is a hydrogen atom or a (C.sub.1 -C.sub.4)alkyl group and R.sub.6 is a hydrogen atom or a (C.sub.1 -C.sub.4)alkyl, hydroxyl or (C.sub.1 -C.sub.4) alkoxy or (C.sub.1 -C.sub.3) alkoxyphenyl group and R.sub.3 represents a (C.sub.1 -C.sub.4)alkyl group, and their acid addition salts are useful as synthetic intermediates.
REFERENCES:
patent: 5098888 (1992-03-01), Vincent et al.
Nutt et al. "Synthesis of thyrotropin releasing hormone analogues with selective central nervous system effects" J. Med. Chem. v. 24, pp. 692-698 (1981).
Galli Frederic
Galtier Daniel
Lassalle Gilbert
Chang Ceila
Synthelabo
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