GB1352860A - Process for racemizing alpha-amino-epsilon-caprolactam and the hydrolysis thereof to l-lysine - Google Patents
Process for racemizing alpha-amino-epsilon-caprolactam and the hydrolysis thereof to l-lysineInfo
- Publication number
- GB1352860A GB1352860A GB5984271A GB5984271A GB1352860A GB 1352860 A GB1352860 A GB 1352860A GB 5984271 A GB5984271 A GB 5984271A GB 5984271 A GB5984271 A GB 5984271A GB 1352860 A GB1352860 A GB 1352860A
- Authority
- GB
- United Kingdom
- Prior art keywords
- micro
- cells
- amino
- lysine
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D223/00—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom
- C07D223/02—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings
- C07D223/06—Heterocyclic compounds containing seven-membered rings having one nitrogen atom as the only ring hetero atom not condensed with other rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D223/12—Nitrogen atoms not forming part of a nitro radical
Abstract
1352860 Racemization of α-amino-#-caprolaciam and its hydrolysis to L-lysine TORAY INDUSTRIES Inc 22 Dec 1971 [23 Dec 1970 26 Dec 1970 (2)] 59842/71 Heading C2C α-Amino-#-caprolactam is racemized by treatment with an Achromobacter, Flavobacterium or Alcaligenes micro-organism or with a racemizing agent derived from any of these microorganisms. The amino-lactam may be treated with a growing culture, a culture broth, living cells, treated cells or a cell extract of any of the micro-organisms. Species of micro-organisms specified are Achromobacter cycloclastes, Achromobacter obae, Flavobacterium arborescens, and Alcaligenes faecalis. The aminolactam may be subjected to a selective hydrolysis treatment so as to obtain L-lysine either simultaneously with or subsequent to the racemization treatment. The selective hydrolysis treatment may be effected by a Cryptococcus, Candida or Trichosporon micro-organism or a hydrolysing agent derived therefrom, and the hydrolysing agent may be applied in the form of growing cells, a culture broth, an intact cell suspension, treated cells such as lyophilized cells and acetone-dried cells, a cell extract or an enzyme "L-aminolactam amido hydrolase"; species of hydrolysing micro-organisms specified are Cryptococcus laurentii, Candida humicola, and Trichosporon cutaneum. Reference has been directed by the Comptroller to Specification 1,334,970.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11575970 | 1970-12-23 | ||
JP11893670 | 1970-12-26 | ||
JP11893770 | 1970-12-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1352860A true GB1352860A (en) | 1974-05-15 |
Family
ID=27313021
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5984271A Expired GB1352860A (en) | 1970-12-23 | 1971-12-22 | Process for racemizing alpha-amino-epsilon-caprolactam and the hydrolysis thereof to l-lysine |
Country Status (5)
Country | Link |
---|---|
CA (1) | CA976896A (en) |
FR (1) | FR2120832A5 (en) |
GB (1) | GB1352860A (en) |
IT (1) | IT943347B (en) |
NL (1) | NL153531B (en) |
-
1971
- 1971-12-22 GB GB5984271A patent/GB1352860A/en not_active Expired
- 1971-12-22 FR FR7146161A patent/FR2120832A5/fr not_active Expired
- 1971-12-22 CA CA130,874A patent/CA976896A/en not_active Expired
- 1971-12-22 NL NL7117703A patent/NL153531B/en not_active IP Right Cessation
- 1971-12-23 IT IT7120771A patent/IT943347B/en active
Also Published As
Publication number | Publication date |
---|---|
DE2163018B2 (en) | 1976-12-23 |
DE2163018A1 (en) | 1972-07-06 |
NL7117703A (en) | 1972-06-27 |
FR2120832A5 (en) | 1972-08-18 |
CA976896A (en) | 1975-10-28 |
NL153531B (en) | 1977-06-15 |
IT943347B (en) | 1973-04-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |