تفاعل #172805

معادلة التفاعل

4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(2-(2-carboxyethylamino)ethylamino)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)benzoic acid

N,N-dimethylacrylamide

→

title compound

4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(2-(3-(dimethylamino)-3-oxopropylamino)ethylamino)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)benzoic acid

ظروف التفاعل

الإجراء التجريبي

The title compound was prepared following the method described above for the synthesis of 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(2-(2-carboxyethylamino)ethylamino)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)-2,3,3a,4,5,5a,5b,6,7,7a,8,11,11a,11b,12,13,13a,13b-octadecahydro-1H-cyclopenta[a]chrysen-9-yl)benzoic acid using N,N-dimethylacrylamide as the Michael aceptor reagent in the first step. The product was isolated as a white solid (9 mg, 50%). LCMS: m/e 672.47 (M+H)+, 2.33 min (method 2). 1H NMR (500 MHz, Acetic acid d4) δ ppm 8.04 (d, J=8.2 Hz, 2H), 7.30 (d, J=8.2 Hz, 2H), 5.37 (d, J=4.6 Hz, 1H), 4.88 (s, 1H), 4.76 (s, 1H), 3.86-3.59 (m, 4H), 3.51-3.37 (m, 2H), 3.07 (s, 3H), 2.99 (s, 3H), 2.95 (t, J=5.6 Hz, 2H), 2.90-2.76 (m, 1H), 2.37-1.22 (m, 22H), 1.78 (s, 3H), 1.20 (s, 3H), 1.14 (s, 3H), 1.09 (s, 3H), 1.02 (s, 3H), 1.00 (s, 3H).

المصدر