Hydrochloric Acid → HCID 50924853, compound

Participants

Reaction Conditions

Reaction Steps

4-((1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-3a-(2-(6-(carboxymethyl)-2,2-dimethyl-1,3-dioxan-4-yl)ethylcarbamoyl)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-1H-cyclopenta[a]chrysen-9-yloxy)-2,2-dimethyl-4-oxobutanoic acid (Example 80, 0.3 g) was taken in MeOH (3 ml) and cooled the contents to 0° C. then Aq HCl (0.5 ml) was added and the contents were stirred for 6 hours at room temperature. After completion of the reaction (monitored by TLC), the reaction mixture was evaporated under reduced pressure. The residue was taken in water and extracted with DCM, the organic layer was dried over Na2SO4 and concentrated under reduced pressure. The residue was purified by silica gel column chromatography using 5% methanol in DCM as eluent to furnish the title compound (0.08 g) as a white solid. 1H NMR (300 MHz, CDCl3): 0.57-0.97 (m, 19H); 1.18-1.21 (m, 8H); 1.25-1.41 (m, 12H); 1.49-1.62 (m, 8H); 1.65-1.82 (m, 10H); 1.85-1.98 (m, 4H); 2.56-2.69 (m, 2H); 2.88-3.06 (m, 3H); 3.29-3.38 (m, 1H); 3.89-3.90 (m, 1H); 4.44-4.47 (m, 1H); 4.56 (s, 1H); 4.71 (s, 1H); Mass: 744 [M+1].

Provenance & Evidence