反应详情

The title compound was prepared following the method described in above for the synthesis of 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-(4-(tert-butoxycarbonyl)piperazin-1-yl)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 1-(ethylsulfonyl)piperazine as the alkylating reagent in Step 3. The product was isolated as a white solid (11 mg, 53%). LCMS: m/e 734.56 (M+H)+, 2.28 min (method 11). 1H NMR (400 MHz, Acetic) δ 7.99 (d, J=8.5 Hz, 2H), 7.26 (d, J=8.3 Hz, 2H), 5.34 (d, J=4.5 Hz, 1H), 4.81 (s, 1H), 4.70 (s, 1H), 3.63-3.28 (m, 7H), 3.26-3.16 (m, 1H), 3.14-2.98 (m, 6H), 2.95-2.75 (m, 1H), 2.33-1.06 (m, 22H), 1.73 (s, 3H), 1.32 (t, J=7.4 Hz, 3H), 1.23 (s, 3H), 1.10 (s, 3H), 1.06 (s, 3H), 0.98 (s, 3H), 0.97 (s, 3H).