4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-((1,1-dioxidotetrahydrothiophen-3-yl)amino)ethyl)amino)-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 → 4-((1S,3aS,5aR,5bR,7aS,9S,11aS,11bR,13aR,13bR)-1-isopropyl-5a,5b,8,8,11a-pentamethyl-3a-((2-(methylamino)-2-oxoethyl)amino)icosahydro-1H-cyclopenta[a]chrysen-9-yl)benzoic acid

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Reaktionsschritte

The title compound was prepared following the method described above for the synthesis 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-((1,1-dioxidotetrahydrothiophen-3-yl)amino)ethyl)amino)-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 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-5a,5b,8,8,11a-pentamethyl-3a-((2-(methylamino)-2-oxoethyl)amino)-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 as the starting material. The product was isolated as a white solid (3 mg, 28%). LCMS: m/e 605.45 (M+H)+, 2.58 min (method 10). 1H NMR (500 MHz, Acetic) δ 8.02 (d, J=8.2 Hz, 2H), 7.36 (d, J=8.2 Hz, 2H), 4.22 (d, J=15.6 Hz, 1H), 3.85 (d, J=15.6 Hz, 1H), 2.87 (s, 3H), 2.50 (dd, J=13.1, 2.4 Hz, 1H), 2.35-1.02 (m, 26H), 1.28 (s, 3H), 1.13 (s, 3H), 1.08 (s, 3H), 0.95 (d, J=6.7 Hz, 3H), 0.87 (d, J=6.7 Hz, 3H), 0.84 (s, 3H), 0.80 (s, 3H).

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