betulonic acid chloride

11-[[(1R,3aS,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-5a,5b,8,8,11a-pentamethyl-9-oxo-1-prop-1-en-2-yl-2,3,4,5,6,7,7a,10,11,11b,12,13,13a,13b-tetradecahydro-1H-cyclopenta[a]chrysene-3a-carbonyl]amino]undecanoic acid

9-[((1R,3aS,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-1-Isopropenyl-5a,5b,8,8,11a-pentamethyl-9-oxo-icosahydro-cyclopenta[a]chrysene-3a-carbonyl)-amino]-nonanoic acid

(6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-1-benzopyran-2-yl)methyl 3-oxolupan-28-oate

N-[3β-hydroxy-20(29)-lupen-28-oyl]-9-amino acid methyl ester

(6-hydroxy-2,5,7,8-tetramethyl-3,4-dihydro-2H-1-benzopyran-2-yl)methyl 3-oxolup-20(29)-en-28-oate

28-[4-(5,7-dinitroquinolin-8-yl)piperazin-1-yl]lup-20(29)-ene-3,28-dione

2-hydroximino-3-oxo-lup-20(29)-en-28-oic acid allylamide

tert-butyl (2-((tert-butoxycarbonyl)amino)ethyl)(2-((1R,3aS,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-5a,5b,8,8,11a-pentamethyl-9-oxo-1-(prop-1-en-2-yl)icosahydro-1H-cyclopenta[a]chrysene-3a-carboxamido)ethyl)carbamate