Cyclopentanecarboxylic acid → 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-(4-(cyclopentanecarbonyl)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

Participants

Reaction Steps

The title compound (3.1 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 cyclopentanecarboxylic acid as the acylating agent. LCMS: m/e 738.8 (M+H)+, 3.84 min (method 14). 1H NMR (500 MHz, METHANOL-d4) δ 7.89 (d, J=8.2 Hz, 2H), 7.17 (d, J=8.2 Hz, 2H), 5.30 (d, J=4.6 Hz, 1H), 4.79 (s, 1H), 4.69 (s, 1H), 3.78-3.52 (m, 4H), 3.13-3.01 (m, 2H), 2.97-2.89 (m, 1H), 2.86-2.73 (m, 2H), 2.72-2.61 (m, 3H), 2.60-2.41 (m, 2H), 2.20-1.80 (m, 8H), 1.75 (s, 3H), 1.74-1.18 (m, 22H), 1.23 (s., 3H), 1.11 (s, 3H), 1.06 (s, 3H), 0.97 (s, 3H), 0.97 (s, 3H).

Provenance & Evidence