HUT61985A - New process for producing disulfide-type thiamine derivatives - Google Patents

New process for producing disulfide-type thiamine derivatives

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Publication number
HUT61985A
HUT61985A HU275892A HU275892A HUT61985A HU T61985 A HUT61985 A HU T61985A HU 275892 A HU275892 A HU 275892A HU 275892 A HU275892 A HU 275892A HU T61985 A HUT61985 A HU T61985A
Authority
HU
Hungary
Prior art keywords
alkali
soln
new process
satd
thiamine
Prior art date
Application number
HU275892A
Other languages
Hungarian (hu)
Other versions
HU209921B (en
Inventor
Katsuji Shimizu
Original Assignee
Takeda Chemical Industries 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 Takeda Chemical Industries Ltd filed Critical Takeda Chemical Industries Ltd
Priority to HU275892A priority Critical patent/HU209921B/en
Publication of HUT61985A publication Critical patent/HUT61985A/en
Publication of HU209921B publication Critical patent/HU209921B/en

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  • Plural Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Prodn. of a disulphide form of thiamine or its deriv. comprises mixing of thiamine cpd. of formula (I) and organic thiosulphate of formula (II) with an alkali in aq. soln. In formulae, R1= opt. substd. alkyl or aralkyl; M= ammonium, alkali metal, or alkaline earth metal; R2= H, alkyl, aralkyl, or ester group. - Specifically the reaction system is satd. or super-satd. with NaCl or other inorganic salt; the alkali used is NaOH; (I) and (II) are added to an aq. soln. of alkali; alkali soln. is added to a mixed. aq. soln. of (I) and (II); the mixing is carried out by gradual addn.; and the reaction is seeded with crystals of target cpd.
HU275892A 1990-12-28 1990-12-28 New process for producing disulfide-type derivatives of thiamine HU209921B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HU275892A HU209921B (en) 1990-12-28 1990-12-28 New process for producing disulfide-type derivatives of thiamine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU275892A HU209921B (en) 1990-12-28 1990-12-28 New process for producing disulfide-type derivatives of thiamine

Publications (2)

Publication Number Publication Date
HUT61985A true HUT61985A (en) 1993-03-29
HU209921B HU209921B (en) 1994-12-28

Family

ID=10960969

Family Applications (1)

Application Number Title Priority Date Filing Date
HU275892A HU209921B (en) 1990-12-28 1990-12-28 New process for producing disulfide-type derivatives of thiamine

Country Status (1)

Country Link
HU (1) HU209921B (en)

Also Published As

Publication number Publication date
HU209921B (en) 1994-12-28

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Legal Events

Date Code Title Description
HMM4 Cancellation of final prot. due to non-payment of fee