5,5-dimethyl-N-(1-picolinoylpyrrolidin-3-yl)-2,4,5,10-tetrahydropyrazolo[3,4-a]carbazole-7-carboxamide

(S)-5,5-dimethyl-N-(tetrahydrofuran-3-yl)-2,4,5,10-tetrahydropyrazolo[3,4-a]carbazole-7-carboxamide

tert-butyl 3-(2,2-diethyl-9-(4-methoxybenzyl)-4,4-dimethyl-1-oxo-2,3,4,9-tetrahydro-1H-carbazole-6-carboxamido)pyrrolidine-1-carboxylate

2,2-diethyl-4,4-dimethyl-1-oxo-N-(pyrrolidin-3-yl)-2,3,4,9-tetrahydro-1H-carbazole-6-carboxamide

9-(4-methoxybenzyl)-4,4-dimethyl-1-oxo-1,3,4,9-tetrahydrospiro[carbazole-2,1'-cyclopropane]-6-carboxylic acid