Reaktion #642444

Reaktionsgleichung

[1-(2-Aminoethyl)-1H-benzoimidazol-5-yl]-(1,3,3-trimethyl-6-aza-bicyclo[3.2.1]oct-6-yl)-methanone trifluoroacetate

2-furoic acid

HOBt

EDAC

→

title compound

Ausbeute 70.0%

Furan-2-carboxylic acid {2-[5-(1,3,3-trimethyl-6-aza-bicyclo[3.2.1]octane-6-carbonyl)benzoimidazol-1-yl]-ethyl}-amide

Ausbeute 70.0%

Lösungsmittel

THF

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONwas added to the solution
2. 2
   SonstigeThe volatiles were evaporated in vacuo
3. 3
   Sonstigethe resulting solid was purified by preparative HPLC
4. 4
   Sonstigedried in vacuo at 50° C.

Vorschrift

To a solution of 2-furoic acid (37 mg, 0.33 mmol) in dry THF (2 mL) at room temperature under an inert atmosphere of nitrogen were added HOBt (49 mg, 0.36 mmol) and EDAC (82 mg, 0.43 mmol), and the resulting solution was stirred for 30 min. [1-(2-Aminoethyl)-1H-benzoimidazol-5-yl]-(1,3,3-trimethyl-6-aza-bicyclo[3.2.1]oct-6-yl)-methanone trifluoroacetate (150 mg, 0.33 mmol) was added to the solution followed by TEA (0.184 mL, 1.32 mmol), and the reaction mixture was stirred for 16 h at room temperature. The volatiles were evaporated in vacuo and the resulting solid was purified by preparative HPLC, dried in vacuo at 50° C. affording 100 mg (70%) of the title compound as a solid. MS-ESI m/z 435; 1H NMR (400 MHz, DMSO-d6) δ 0.88-0.99 (m, 6H), 1.07 (d, 3H), 1.29-1.41 (m, 4H), 1.50-1.52 (m) and 2.10-2.11 (m, 1H), 1.76-1.79 (m, 1H), 3.02 (d), 3.13 (d), 3.32 (d) and 3.47 (d, 2H), 3.69 (t, 2H), 3.87-3.89 (m) and 4.39-4.41 (m, 1H), 4.56 (t, 2H), 6.58 (s, 1H), 6.98 (d, 1H), 7.48 (dd, 1H), 7.77-7.82 (m, 2H), 7.89 (t, 1H), 8.54-8.58 (m, 1H), 9.07 (d, 1H).

Quelle