Reaction Steps
The title compound (0.4 mg) was prepared from methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-5a,5b,8,8,11a-pentamethyl-3a-((2-(piperazin-1-yl)ethyl)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)benzoate following the general procedure as described above using isobutyric acid as the acylating agent. LCMS: m/e 712.8 (M+H)+, 4.46 min (method 15). 1H NMR (500 MHz, METHANOL-d4) δ 7.88 (d, J=8.2 Hz, 2H), 7.15 (d, J=7.9 Hz, 2H), 5.30 (d, J=4.9 Hz, 1H), 4.78 (s, 1H), 4.67 (s, 1H), 3.77-3.54 (m, 4H), 2.97 (dt, J=13.4, 6.6 Hz, 2H), 2.86-2.71 (m, 3H), 2.70-2.51 (m, 4H), 2.46 (br. s., 1H), 2.15 (dd, J=17.1, 6.4 Hz, 1H), 2.08-1.82 (m, 5H), 1.75 (s, 3H), 1.73-1.18 (m, 16H), 1.22 (s, 3H), 1.11 (d, J=6.7 Hz, 6H), 1.10 (s, 3H), 1.05 (s, 3H), 0.97 (s., 3H), 0.97 (s., 3H),
