JPS54109953A - Separation of dl-isoleucine - Google Patents
Separation of dl-isoleucineInfo
- Publication number
- JPS54109953A JPS54109953A JP1804578A JP1804578A JPS54109953A JP S54109953 A JPS54109953 A JP S54109953A JP 1804578 A JP1804578 A JP 1804578A JP 1804578 A JP1804578 A JP 1804578A JP S54109953 A JPS54109953 A JP S54109953A
- Authority
- JP
- Japan
- Prior art keywords
- isoleucine
- naphthalenedisulfonate
- alloisoleucine
- mixture
- sulfonate
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the title pure substance which is a raw material for medicines and nutrients, by separating a novel DL-isoleucine 1,5-naphthalenedisulfonate from a mixture of DL-isoleucine and DL-alloisoleucine, and by decomposing the sulfonate.
CONSTITUTION: A mixture of DL-isoleucine and DL-alloisoleucine is reacted with 1,5-naphthalenedisulfonic acid in an aqueous solvent, e.g. water, an alcohol, and a ketone, under heating to separate novel pure DL-isoleucine 1,5-naphthalenedisulfonate (slightly soluble) containing no DL-alloisoleucine 1,5-naphthalenedisulfonate. The resulting sulfonate is decomposed by the conventional method, e.g. alkali or ion exchange resin treatments, to give DL-isoleucine.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1804578A JPS54109953A (en) | 1978-02-17 | 1978-02-17 | Separation of dl-isoleucine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1804578A JPS54109953A (en) | 1978-02-17 | 1978-02-17 | Separation of dl-isoleucine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54109953A true JPS54109953A (en) | 1979-08-29 |
Family
ID=11960707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1804578A Pending JPS54109953A (en) | 1978-02-17 | 1978-02-17 | Separation of dl-isoleucine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54109953A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0861826A1 (en) * | 1997-02-26 | 1998-09-02 | Ajinomoto Co., Inc. | Method for purifying branched chain amino acids |
-
1978
- 1978-02-17 JP JP1804578A patent/JPS54109953A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0861826A1 (en) * | 1997-02-26 | 1998-09-02 | Ajinomoto Co., Inc. | Method for purifying branched chain amino acids |
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