GB1306958A - Process for the preparation of substituted cobamides - Google Patents

Process for the preparation of substituted cobamides

Info

Publication number
GB1306958A
GB1306958A GB4654570A GB1306958DA GB1306958A GB 1306958 A GB1306958 A GB 1306958A GB 4654570 A GB4654570 A GB 4654570A GB 1306958D A GB1306958D A GB 1306958DA GB 1306958 A GB1306958 A GB 1306958A
Authority
GB
United Kingdom
Prior art keywords
methyl
cobamides
substituted
preparation
dimethylbenziminazolyl
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
Application number
GB4654570A
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.)
Pierrel SpA
Original Assignee
Pierrel SpA
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 Pierrel SpA filed Critical Pierrel SpA
Publication of GB1306958A publication Critical patent/GB1306958A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H23/00—Compounds containing boron, silicon, or a metal, e.g. chelates, vitamin B12

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)

Abstract

1306958 Substituted cobamides PIERREL SpA 2 Sept 1971 [30 Sept 1970] 46545/70 Heading C2V In a process for the preparation of α-(5,6- dimethylbenziminazolyl) - methyl - cobamide a solution of α-(5,6-dimethylbenziminazolyl)- hydroxy-cobarnide is exposed to white light while being reduced with stannous chloride in an inert atmosphere, the resulting solution under nitrogen and away from light is passed through an anionic exchange resin to remove impurities, then reacted with a methyl halide to obtain the methyl derivative which is absorbed on a non-ionic resin in a column, eluted and the final product crystallized from the eluate. An example is given.
GB4654570A 1970-09-30 1970-09-30 Process for the preparation of substituted cobamides Expired GB1306958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4654570 1970-09-30

Publications (1)

Publication Number Publication Date
GB1306958A true GB1306958A (en) 1973-02-14

Family

ID=10441667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4654570A Expired GB1306958A (en) 1970-09-30 1970-09-30 Process for the preparation of substituted cobamides

Country Status (6)

Country Link
AU (1) AU450779B2 (en)
BE (1) BE773144A (en)
ES (1) ES395551A1 (en)
FR (1) FR2108632A5 (en)
GB (1) GB1306958A (en)
ZA (1) ZA716087B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1236737A1 (en) * 1999-12-09 2002-09-04 Eisai Co., Ltd. Process for production of methylcobalamin

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1236737A1 (en) * 1999-12-09 2002-09-04 Eisai Co., Ltd. Process for production of methylcobalamin
EP1236737A4 (en) * 1999-12-09 2003-02-26 Eisai Co Ltd Process for production of methylcobalamin
US6657057B2 (en) 1999-12-09 2003-12-02 Eisai Co., Ltd. Process for production of methylcobalamin

Also Published As

Publication number Publication date
ES395551A1 (en) 1974-11-01
AU3402871A (en) 1973-04-05
FR2108632A5 (en) 1972-05-19
AU450779B2 (en) 1974-07-18
ZA716087B (en) 1972-05-31
BE773144A (en) 1972-01-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees