2,3,4,6-Tetrakis-O-trimethylsilyl-D-gluconolactone

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Warning

• 유해·위험 문구

  H315：피부에 자극을 일으킴

  H319：눈에 심한 자극을 일으킴

  H335：호흡 자극성을 일으킬 수 있음

• 예방조치문구

  P261：분진·흄·가스·미스트·증기·...·스프레이의 흡입을 피하시오.

  P271：옥외 또는 환기가 잘 되는 곳에서만 취급하시오.

  P280：보호장갑/보호의/보안경/안면보호구를 착용하시오.

2,3,4,6-Tetrakis-O-trimethylsilyl-D-gluconolactone 화학적 특성, 용도, 생산

• 화학적 성질

  Pale yellow oil

• 용도

  2,3,4,6-Tetrakis-O-trimethylsilyl-D-gluconolactone is an antidiabetic agent and an intermediate of Dapagliflozin (D185370). 2,3,4,6-Tetrakis-O-trimethylsilyl-D-gluconolactone acts as a reagent in the synthesis of trans-cyclohexane-bearing C-glucose as sodium glucose co-transporter 2 inhibitors.

• Synthesis

  At present, the publicly reported synthesis process of 2,3,4,6-Tetrakis-O-trimethylsilyl-D-gluconolactone is mainly prepared by the synthesis of D-gluconolactone and trimethylsilyl chloride in the presence of an acid-binding agent or the preparation of D-gluconolactone and hexamethyldisilazane in dichloromethane reflux. The former has problems such as high pH requirements, low atom economy, and severe pollution. In contrast, the latter has such problems as the large amount of hexamethyldisilazane used, the strong volatility of dichloroethane, and severe pollution. Therefore, Li et al. developed a method for preparing 2,3,4,6-Tetrakis-O-trimethylsilyl-D-gluconolactone, comprising the following operations: reacting D-gluconolactone with hexamethyldisilazane in an ionic liquid at standard pressure, and removing the ionic liquid by reduced pressure distillation after the reaction is completed to obtain 2,3,4,6-Tetrakis-O-trimethylsilyl-D-gluconolactone; the cation in the ionic liquid is an alkyl imidazolium ion, and the anion in the ionic liquid is hexafluorophosphate, tetrafluoroborate, tetrachloroaluminate or chloride ion.

2,3,4,6-Tetrakis-O-trimethylsilyl-D-gluconolactone 공급 업체

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