Reaktion #2381903

Reaktionsgleichung

3-amino-4-cyclohexyl-1-cyclopropyl-1-fluoro-2-butanol

(S)-1-(tert-butoxycarbonyl)-α-[(S)-α-[(tert-butylsulphonyl)methyl]hydrocinnamamido]imidazole-4-propionic acid

triethylamine

HOOBT

→

(S)-α-[(S)-α-[(tert-butylsulphonyl)methyl]hydrocinnamamido]-N-[(1S,2R,3S)-1-(cyclohexylmethyl)-3-cyclopropyl-3-fluoro-2-hydroxypropyl]-1-Boc-imidazole-4-propionamide

Lösungsmittel

dimethylformamide

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThereafter, the dimethylformamide is evaporated in a high vacuum
2. 2
   WaschenThe ethyl acetate phase is washed with 20 ml of saturated sodium bicarbonate solution and 20 ml of saturated sodium chloride solution
3. 3
   Trocknendried over sodium sulphate
4. 4
   Sonstigeevaporated under reduced pressure

Vorschrift

A mixture of 147 mg (0.64 mmol) of (1S or R,2R,3S)-3-amino-4-cyclohexyl-1-cyclopropyl-1-fluoro-2-butanol, 365 mg (0.7 mmol) of (S)-1-(tert-butoxycarbonyl)-α-[(S)-α-[(tert-butylsulphonyl)methyl]hydrocinnamamido]imidazole-4-propionic acid, 71 mg (0.7 mmol) of triethylamine, 114 mg (0.7 mmol) of HOOBT and 285 mg (0.7 mmol) of HOBTU in 15 ml of dimethylformamide is stirred at room temperature overnight under argon. Thereafter, the dimethylformamide is evaporated in a high vacuum and the residue is taken up in 50 ml of ethyl acetate. The ethyl acetate phase is washed with 20 ml of saturated sodium bicarbonate solution and 20 ml of saturated sodium chloride solution, dried over sodium sulphate and evaporated under reduced pressure. There is obtained (S)-α-[(S)-α-[(tert-butylsulphonyl)methyl]hydrocinnamamido]-N-[(1S,2R,3S)-1-(cyclohexylmethyl)-3-cyclopropyl-3-fluoro-2-hydroxypropyl]-1-Boc-imidazole-4-propionamide as a yellowish foam.

Quelle