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JPS5780368A - Preparation of tryptophan and its derivative - Google Patents

Preparation of tryptophan and its derivative

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Publication number
JPS5780368A
JPS5780368A JP15595880A JP15595880A JPS5780368A JP S5780368 A JPS5780368 A JP S5780368A JP 15595880 A JP15595880 A JP 15595880A JP 15595880 A JP15595880 A JP 15595880A JP S5780368 A JPS5780368 A JP S5780368A
Authority
JP
Japan
Prior art keywords
tryptophan
derivative
formula
raw material
expressed
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
JP15595880A
Other languages
Japanese (ja)
Inventor
Shinzo Imamura
Hiroyoshi Kuramoto
Haruyo Satou
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP15595880A priority Critical patent/JPS5780368A/en
Publication of JPS5780368A publication Critical patent/JPS5780368A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain a tryptophan derivative chemically and particularly microbiologically convertible into L-tryptophan industrially and advantageously, by hydrolyzing an N-(substituted methylene)tryptophan ester derivative as a raw material under acidic conditions.
CONSTITUTION: An N-(substituted methylene)tryptophan ester derivative expressed by formula I[R1 is H, lower alkyl or (un)substituted aryl; R2 is (un) substituted aryl; R3 is lower alkyl]as a raw material is hydrolyzed under acidic conditions, e.g. hydrochloric or acetic acid, to prepare a tryptophan derivative expressed by formula II. The resultant compound expressed by formula II is then hydrolyzed in the presence of a base, e.g. sodium hydroxide, to afford tryptophan and treated by a microorganism to give L-tryptophan easily without passing through many troublesome steps. By-products formed in preparing the tryptophan are reusable as the starting raw material.
COPYRIGHT: (C)1982,JPO&Japio
JP15595880A 1980-11-07 1980-11-07 Preparation of tryptophan and its derivative Pending JPS5780368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15595880A JPS5780368A (en) 1980-11-07 1980-11-07 Preparation of tryptophan and its derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15595880A JPS5780368A (en) 1980-11-07 1980-11-07 Preparation of tryptophan and its derivative

Publications (1)

Publication Number Publication Date
JPS5780368A true JPS5780368A (en) 1982-05-19

Family

ID=15617245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15595880A Pending JPS5780368A (en) 1980-11-07 1980-11-07 Preparation of tryptophan and its derivative

Country Status (1)

Country Link
JP (1) JPS5780368A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214141A (en) * 1991-01-18 1993-05-25 Fuji Photo Film Co., Ltd. Azomethine compound and photographic dye comprising the azomethine compound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214141A (en) * 1991-01-18 1993-05-25 Fuji Photo Film Co., Ltd. Azomethine compound and photographic dye comprising the azomethine compound

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