(1R,3aS,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-3a-((2-(1,1-dioxidothiomorpholino)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 trifluoromethanesulfonate → ethyl 1-cyano-4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-((2-(1,1-dioxidothiomorpholino)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)cyclohex-3-enecarboxylate

Participants

Reaction Steps

The title compound was prepared following the procedure described in general procedure Step 5, using (1R,3aS,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-3a-((2-(1,1-dioxidothiomorpholino)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 trifluoromethanesulfonate and ethyl 1-cyano-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohex-3-enecarboxylate as reactants. The product was isolated as a mixture of diasteroisomers (solid, 61% yield). MS: m/e 748.6 (M+H)+, 2.99 min (method 4). 1H NMR (400 MHz, CHLOROFORM-d) δ 5.35 (d, J=1.8 Hz, 1H), 5.28-5.23 (m, 1H), 4.73 (d, J=1.8 Hz, 1H), 4.61 (s, 1H), 4.29 (q, J=7.0 Hz, 2H), 3.13-3.01 (m, 8H), 2.80-2.46 (m, 9H), 2.33-2.15 (m, 2H), 2.08-0.82 (m, 22H), 1.70 (s, 3H), 1.34 (t, J=7.2 Hz, 3H), 1.07 (s, 3H), 0.97 (s, 3H), 1.03-0.92 (m, 6H), 0.86 (s, 3H).

Provenance & Evidence