2-(Methylazaniumyl)-3-(3-methyl-5-sulfanylimidazol-4-yl)propanoate

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 2-(Methylazaniumyl)-3-(3-methyl-5-sulfanylimidazol-4-yl)propanoate
• 化学式: C8H13N3O2S
• 分子量: 215.28
• InChiKey: VBMIRSPJYVMQOI-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.6
• 重原子数：
  14
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  75.6
• 氢给体数：
  2
• 氢受体数：
  4

文献信息

• PROCESS FOR THE SYNTHESIS OF L-(+)-ERGOTHIONEINE
  申请人：Trampota Miroslav

  公开号：US20090093642A1

  公开（公告）日：2009-04-09

  This invention relates to a novel process for the preparation of optically pure L-(+)-ergothioneine. The process for the chemical synthesis of L-ergothioneine comprises steps which consist of reacting L-histidine alkyl ester with an acid halide, chloroformate or pyrocarbonate in the presence of a base, hydrolysis of the alkyl-(S,Z)-2,4,5-triamidopent-4-enoate to obtain a (S)-alkyl 2,5-diamido-4-oxopentanoate, acid catalyzed hydrolysis of the (S)-alkyl 2,5-diamido-4-oxopentanoate followed by reaction with a metal thiocyanate to obtain the thiohistidine, protection of the sulfur of thiohistidine as the tert-butyl thioether, dialkylation of the primary amine to obtain a tertiary amine, quaternization of the tertiary amine, and removal of the protecting group to obtain the desired (S)-3-(2-mercapto-1H-imidazol-5-yl)-2-(trialkylammonio)propanoate (I). This process affords a better yield and is capable of practical application at large scale.

  这项发明涉及一种制备光学纯L-(+)-麦角硫胺的新工艺。L-麦角硫胺的化学合成过程包括以下步骤：将L-组氨酸烷基酯与酸卤、氯甲酸酯或吡碳酸酯在碱的存在下反应，水解烷基-(S,Z)-2,4,5-三氨基戊-4-烯酸酯以获得(S)-烷基2,5-二氨基-4-氧代戊酸酯，酸催化水解(S)-烷基2,5-二氨基-4-氧代戊酸酯，然后与金属硫氰酸盐反应以获得硫组氨酸，将硫组氨酸的硫保护为叔丁基硫醚，对一级胺进行二烷基化以获得三级胺，对三级胺进行季铵化，去除保护基以获得所需的(S)-3-(2-巯基-1H-咪唑-5-基)-2-(三烷基铵)丙酸酯(I)。这个工艺提供了更好的产率，并且适用于大规模实际应用。
• US7767826B2
  申请人：——

  公开号：US7767826B2

  公开（公告）日：2010-08-03