benzyl (2S,2'S,4R,9a'R)-4-(2-aminobenzamido)-2'-methyl-3',5-dioxo-2',3',4,5-tetrahydro-3H-spiro[furan-2,9'-imidazo[1,2-a]indole]-1'(9a'H)-carboxylate

benzyl (2S,2'S,4R,9a'R)-2'-methyl-3',5-dioxo-4-(((2,2,2-trichloroethoxy)carbonyl)amino)-2',3',4,5-tetrahydro-3H-spiro[furan-2,9'-imidazo[1,2-a]indole]-1'(9a'H)-carboxylate

N-19-benzyloxycarbonyl-fumiquinazoline A

N-19-benzyloxycarbonyl-fumiquinazoline B

(2S,9S,9aR)-9-Hydroxy-2-methyl-9-((1S,4S)-1-methyl-3,10-dioxo-1,3,4,10-tetrahydro-2H-2,4a,9-triaza-anthracen-4-ylmethyl)-3-oxo-2,3,9,9a-tetrahydro-imidazo[1,2-a]indole-1-carboxylic acid benzyl ester