Hydrochloric Acid → methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-5a,5b,8,8,11a-pentamethyl-3a-(3-(methylamino)propylcarbamoyl)-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

Participants

Reaction Steps

A vial containing methyl 4-((1R,3aS,5aR,5bR,7aR,11aS,11bR,13aR,13bR)-3a-(3-(tert-butoxycarbonyl(methyl)amino)propylcarbamoyl)-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)benzoate (122 mg, 0.164 mmol) was diluted with HCl (4M in dioxane) (3 mL, 12.00 mmol). The mixture was stirred at rt. After 1.5 h of stirring at rt, LC/MS indicated the reaction was complete. The mixture was concentrated under reduced pressure. The crude product was carried forward to the next step with no additional purification. LCMS: m/e 641.5 (M−H)−, 2.73 min (method 3).

Provenance & Evidence