Process for preparing D-(-)-N-carbamoyl-2-(phenyl or substituted phenyl)glycines

Claim 2

A process for preparing D-(-)-N-carbamoyl-2-(phenyl or substituted phenyl)glycines having the following general formula: ##STR3## wherein R 1 , R 2 , R 3 and R 4 are independently hydrogen atom, a halogen atom, hydroxyl group, a lower alkoxyl group or methyl group, which comprises subjecting 5-(phenyl or substituted phenyl)hydantoins having the following general formula: ##STR4## wherein R 1 , R 2 , R 3 and R 4 are as defined above to the action of an enzyme which is in the form of a cultured broth containing microorganisms or the separated cells of said microorganisms in an aqueous medium, said enzyme being capable of hydrolyzing 5-(phenyl or substituted phenyl)hydantoins so as to substantially produce only D-(-)forms of N-carbamoyl-2-(phenyl or substituted phenyl)-glycines, and recovering said D-carbamoyl glycines from the medium.

Claim 3

The process of claim 1, wherein said cells are intact cells or dried cells.

Claim 4

The process of claim 1, wherein said cells are crushed cells or in the form of a cellular extract.

Claim 5

The process of claim 1, wherein said cells are immobilized.

Claim 6

The process of claim 1, wherein said microorganisms are those cultured in a culture medium containing a hydantoin compound which enhances the capability of asymmetrically hydrolyzing the hydantoin ring.

Claim 7

The process of claim 5, wherein said hydantoin compound is at least one member selected from the group consisting of hydantoin, DL-5-methylhydantoin and DL-5-(2-methylthioethyl)hydantoin.

Claim 8

The process of claim 1, wherein said process is conducted in an aqueous medium of pH 7 to 10.

Claim 9

The process of claim 7, wherein said microorganism is one member selected from the group consisting of Achromobacter, Aerobacter, Aeromonas, Agrobacterium, Alcaligenes, Arthrobacter, Bacillus, Brevibacterium, Corynebacterium, Enterobacter, Erwinia, Escherichia, Klebsiella, Microbacterium, Micrococcus, Protaminobacter, Proteus, Pseudomonas, Sarcina, Serratia, Xanthomonas, Actinomyces, Actinoplanes, Mycobacterium, Nocardia, Streptomyces, Aspergillus, Paecilomyces, Penicillium, Candida, Pichia, Rhodotorula and Torulopsis.

Claim 10

A process for preparing D-(-)-N-carbamoyl-2-phenylglycine which comprises subjecting DL-5-phenylhydantoin to the action of an enzyme which is in the form of a cultured broth containing microorganisms, the separated cells of said microorganisms, the immobilized separated cells of said microoganisms or the immobilized separated cells of said microorganisms that have been cultured in the presence of a hydantoin compound, in an aqueous reaction medium of pH 7 to 10, said enzyme being capable of hydrolyzing 5-(phenyl or substituted phenyl)hydantoins so as to substantially produce only D-(-)forms of N-carbamoyl-2-(phenyl or substituted phenyl)-glycines, and recovering said D-carbamoyl glycines from the medium, said microorganism being one member selected from the group consisting of Aerobacter, Agrobacterium, Brevibacterium, Corynebacterium, Microbacterium, Micrococcus, Pseudomonas, Actinoplanes, Mycobacterium, Nocardia and Streptomyces.

Claim 11

A process for preparing D-(-)-N-carbamoyl-2-phenylglycine which comprises subjecting DL-5-phenylhydantoin to the action of an enzyme which is in the form of a cultured broth containing microorganisms, the separated cells of said microorganisms, the immobilized separated cells of said microoganisms or the immobilized separated cells of said microorganisms that have been cultured in the presence of a hydantoin compound, in an aqueous reaction medium of pH 7 to 10, said enzyme being capable of hydrolyzing 5-(phenyl or substituted phenyl)hydantoins so as to substantially produce only D-(-)forms of N-carbamoyl-2-(phenyl or substituted phenyl)-glycines, and recovering said D-carbamoyl glycines from the medium, said microorganism being one member selected from the group consisting of Aerobacter, Agrobacterium, Brevibacterium, Corynebacterium, Microbacterium, Micrococcus, Pseudomonas, Actinoplanes, Mycobacterium, Nocardia and Streptomyces.

Claim 12

A process for preparing D-(-)-N-carbamoyl-2-(hydroxyphenyl)glycine which comprises subjecting DL-5-(hydroxyphenyl)hydantoin to the action of an enzyme which is in the form of a cultured broth containing microorganisms, the separated cells of said microorganisms, the immobilized separated cells of said microorganisms or the immobilized separated cells of said microoganisms that have been cultured in the presence of a hydantoin compound, in an aqueous reaction medium of pH 7 to 10, said enzyme being capable of hydrolyzing 5-(phenyl or substituted phenyl)hydantoins so as to substantially produce only D-(-)forms of N-carbamoyl-2-(phenyl or substituted phenyl)-glycines, and recovering said D-carbamoyl glycines from the medium, said microorganism being one member selected from the group consising of Aerobacter, Agrobacterium, Brevibacterium, Corynebacterium, Microbacterium, Micrococcus, Pseudomonas, Actinoplanes, Mycobacterium, Nocardia and Streptomyces.

Claim 13

A process for preparing D-(-)-N-carbamoyl-2-(hydroxyphenyl)glycine which comprises subjecting DL-5-(hydroxyphenyl)hydantoin to the action of an enzyme which is in the form of a cultured broth containing microorganisms, the separated cells of said microorganisms, the immobilized separated cells of said microorganisms or the immobilized separated cells of said microoganisms that have been cultured in the presence of a hydantoin compound, in an aqueous reaction medium of pH 7 to 10, said enzyme being capable of hydrolyzing 5-(phenyl or substituted phenyl)hydantoins so as to substantially produce only D-(-)forms of N-carbamoyl-2-(phenyl or substituted phenyl)-glycines, and recovering said D-carbamoyl glycines from the medium, said microorganism being one member selected from the group consising of Aerobacter, Agrobacterium, Brevibacterium, Corynebacterium, Microbacterium, Micrococcus, Pseudomonas, Actinoplanes, Mycobacterium, Nocardia and Streptomyces.

Claim 14

The process of claim 10, wherein said DL-5-(hydroxyphenyl)hydantoin is DL-5-(4-hydroxyphenyl)hydantoin.

Claim 15

A process for preparing D-(-)-N-carbamoyl-2-(methoxyphenyl)glycine which comprises subjecting DL-5-(methoxyphenyl)hydantoin to the action of an enzyme which is in the form of a cultured broth containing microorganisms, the separated cells of said microorganisms, the immobilized separated cells of said microorganisms or the immobilized separated cells of said microorganisms that have been cultured in the presence of a hydantoin compound, in an aqueous reaction medium of pH 7 to 10, said enzyme being capable of hydrolyzing 5-(phenyl or substituted pheny)hydantoins so as to substantially produce only D-(-)forms of N-carbamoyl-2-(phenyl or substituted phenyl)-glycines, and recovering said D-carbamoyl glycines from the medium, said microorganism being one member selected from the group consisting of Aerobacter, Agrobacterium, Brevibacterium, Corynebacterium, Microbacterium, Micrococcus, Pseudomonas, Actinoplanes, Mycobacterium, Nocardia and Streptomyces.

Claim 16

A process for preparing D-(-)-N-carbamoyl-2-(methoxyphenyl)glycine which comprises subjecting DL-5-(methoxyphenyl)hydantoin to the action of an enzyme which is in the form of a cultured broth containing microorganisms, the separated cells of said microorganisms, the immobilized separated cells of said microorganisms or the immobilized separated cells of said microorganisms that have been cultured in the presence of a hydantoin compound, in an aqueous reaction medium of pH 7 to 10, said enzyme being capable of hydrolyzing 5-(phenyl or substituted pheny)hydantoins so as to substantially produce only D-(-)forms of N-carbamoyl-2-(phenyl or substituted phenyl)-glycines, and recovering said D-carbamoyl glycines from the medium, said microorganism being one member selected from the group consisting of Aerobacter, Agrobacterium, Brevibacterium, Corynebacterium, Microbacterium, Micrococcus, Pseudomonas, Actinoplanes, Mycobacterium, Nocardia and Streptomyces.

Claim 17

The process of claim 12, wherein said DL-5-(methoxyphenyl)hydantoin is DL-5-(4-methoxyphenyl)hydantoin.