JPS54109953A - Separation of dl-isoleucine - Google Patents

Separation of dl-isoleucine

Info

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
Application number
JP1804578A
Other languages
Japanese (ja)
Inventor
Ichiro Senhata
Shigeki Yamada
Chikara Hongo
Ryuzo Yoshioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tanabe Seiyaku Co Ltd
Original Assignee
Tanabe Seiyaku Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tanabe Seiyaku Co Ltd filed Critical Tanabe Seiyaku Co Ltd
Priority to JP1804578A priority Critical patent/JPS54109953A/en
Publication of JPS54109953A publication Critical patent/JPS54109953A/en
Pending legal-status Critical Current

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  • 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
JP1804578A 1978-02-17 1978-02-17 Separation of dl-isoleucine Pending JPS54109953A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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