摘要:
A novel three-step process for resolving a racemic spiro-hydantoin compound into its optical antipodes is disclosed, which involves (1) reacting said racemic compound with an optically-active asymmetric isocyanate of the formula RNCO, wherein R is (S)- or (R)-1-phenylethyl or (S)-or (R)-1-(1-naphthyl)ethyl, to form the corresponding diastereomeric ureido compound; (2) separating the resulting diastereomeric mixture into its component parts, and (3) thereafter converting the separated ureido diasteromers obtained in step (b) to the corresponding asymmetric hydantoin compounds by treatment with an alkali metal lower alkoxide (C.sub.1 -C.sub.4), followed by acidification, whereupon the desired optical isomer is obtained. The final products so obtained, such as (4S)-(+)-6-fluoro-2,3-dihydro-spiro-[4H-1-benzopyran-4,4'-imidazolidine]-2',5'-dione(sorbinil) and (5'S)-3'-chloro-5', 6',7',8'-tetrahydro-spiro[imidazolidine-4,5'-quinoline]-2,5-dione, are known to be useful in preventing or alleviating certain chronic diabetic complications. The aforementioned diastereomeric ureido intermediates are novel compounds.
摘要:
A novel three-step process for resolving a racemic spiro-hydantoin compound into its optical antipodes is disclosed, which involves (1) reacting said racemic compound with an optically-active asymmetric isocyanate of the formula RNCO, wherein R is (S)- or (R)-1-phenylethyl or (S) or (R)-1-(1-naphthyl)ethyl, to form the corresponding diastereomeric uredio compound; (2) separating the resulting diastereomeric mixture into its component parts, and (3) thereafter converting the separated ureido diastereomers obtained in step (b) to the corresponding asymmetric hydantoin compounds by treatment with an alkali metal lower alkoxide (C.sub.1 -C.sub.4), followed by acidification, whereupon the desired optical isomer is obtained. The final products so obtained, such as (4S)-(+)-6-fluoro-2,3-dihydro-spiro[4H-1-benzopyran-4,4'-imidazolidine]-2', 5'-dione (sorbinil) and (5'S)-3'-chloro-5', 6', 7', 8'-tetra-hydro-spiro[imidazolidine-4,5'-quinoline]-2,5-dione, are known to be useful in preventing or alleviating certain chronic diabetic complications. The aforementioned diastereomeric uredio intermediates are novel compounds.
摘要:
Certain 1-substituted 4-(1,2-benzisoxazolyl)-piperidine compounds exhibit neuroleptic activity and are useful in the treatment of psychosis and anxiety.
摘要:
The present invention relates to compounds of the formula wherein R1 through R4, X, Y, m and n are defined as in the specification. Such compounds are useful exhibit activity as serotonin, norepinephrine and dopamine reuptake inhibitors, and their pharmaceutically acceptable salts, and their use in the treatment of central nervous system and other disorders.
摘要:
Compounds of the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.4, R.sup.23, R.sup.24, R.sup.25 and R.sup.26 are defined as in the specification.These compounds are useful psychotherapeutics and are potent serotonin (5-HT.sub.1) agonists and antagonists.
摘要:
Certain 1-substituted 4-(1,2-benzisoxazolyl)piperidine compounds exhibit neuroleptic activity and are useful in the treatment of psychosis and anxiety.
摘要:
Certain substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones are highly potent gabaergic agents, valuable in the treatment of individuals suffering from schizophrenia or reversing the side effects of a previously or concurrently administered neuroleptic agent; or in the treatment of epilepsy. A wider class of substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones, together with 1-phenyl-3-(2-pyrrolidinylidene)-2(1H,3H)-indolones, and homologs thereof, are valuable in the treatment of anxiety.
摘要:
Certain substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones are highly potent gabaergic agents, valuable in the treatment of individuals suffering from schizophrenia or reversing the side effects of a previously or concurrently administered neuroleptic agent; or in the treatment of epilepsy. A wider class of substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones, together with 1-phenyl-3-(2-pyrrolidinylidene)-2(1H,3H)-indolones, and homologs thereof, are valuable in the treatment of anxiety.
摘要:
A series of novel 3-mono(substituted methyl)- and 3,3-di(substituted methyl)-2-oxo-indoline-1-alkanoic acid compounds have been prepared, including their lower alkyl esters and unsubstituted amide derivatives, as well as the base salts of said acids with pharmacologically acceptable cations. These compounds are useful in therapy as aldose reductase inhibitors for the control of certain chronic diabetic complications. Said oxindole-1-alkanoic acid compounds are of the formulae: ##STR1## wherein X is hydrogen and X.sup.1 is hydrogen, hydroxy, fluorine, chlorine, bromine, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy; or X and X.sup.1, when taken separately, are each chlorine, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, and when taken together are --OCH.sub.2 (CH.sub.2).sub.n O-- at the 4,5-, 5,6- or 6,7-positions of the molecule wherein n is zero or one; R.sub.1 is hydrogen or methyl; R.sub.2 is hydrogen, C.sub.1 -C.sub.4 alkyl or phenylalkyl having up to three carbon atoms in the alkyl moiety wherein said phenylalkyl is optionally substituted with up to two chlorine substituents on the phenyl ring; R.sub.3 is naphthylmethyl, furfuryl, thenyl, benzothienylmethyl, benzoxazolylmethyl, benzothiazolylmethyl or phenylalkyl having up to three carbon atoms in the alkyl moiety wherein said phenylalkyl is optionally substituted with up to two identical or non-identical substituents on the phenyl ring, said identical substituents being fluorine, chlorine, bromine, trifluoromethyl, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy and said non-identical substituents being chlorine, methyl, methoxy or trifluoromethyl; and Y is hydrogen, fluorine, chlorine, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 -alkoxy.