Title:
【発明の名称】ジメチルスルホニウム化合物の脱メチル化方法
Document Type and Number:
Japanese Patent JPH08510121
Kind Code:
A
Abstract:
PCT No. PCT/EP94/01640 Sec. 371 Date Nov. 14, 1995 Sec. 102(e) Date Nov. 14, 1995 PCT Filed May 16, 1994 PCT Pub. No. WO94/26918 PCT Pub. Date Nov. 24, 1994Process for preparing S-methylmercapto and mercapto compounds comprising the step of demethylating a dimethylsulfonium compound of formula I to the corresponding S-methylmercapto compound of formula II, using a microorganism or alga which is capable of demethylating 3-dimethylsulfonium propionate (DMSP) to S-methyl-3-mercaptopropionate (MMPA), but which is incapable of further demethylating the latter compound to 3-mercaptopropionate with the same speed, or using an enzyme preparation derivable from such microorganism or alga: Preferably the group R denotes CH2-CH2-COOH (I is DMSP), CH2-CH(NH2)-COOH (I is S-dimethyl-cystein), CH2-Ch2-CH (NH2) -COOH (I is S-methyl-methionine) or CH2-COOH (I is 2-dimethylsulfonium acetate), or a salt or ester of any of these. The microorganisms are preferably marine Desulfobacterium strains, especially a Desulfobacterium autotrophicum, Desulfobacterium vacuolatum or similar strain.
Inventors:
Hansen, Theo Adrien
Marrel, Marc José Aye Juan Dale
Marrel, Marc José Aye Juan Dale
Application Number:
JP52499994A
Publication Date:
October 29, 1996
Filing Date:
May 16, 1994
Export Citation:
Assignee:
Qwest International B.B.
International Classes:
C12P11/00; C12P13/04; A23L27/29; C12R1/01; C12R1/89; (IPC1-7): C12P11/00
Attorney, Agent or Firm:
Yoshio Kawaguchi (2 outside)
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