The hydroxylamine nortryptoquivaline (2) and the three secondary amines deoxytryptoquivaline (3), deoxynortryptoquivaline (4), and deoxynortryptoquivalone (8) were found to be toxic metabolites of Aspergillus clauatus. They were accompanied by the two previously described tremor producing agents tryptoquivaline (1) and nortryptoquivalone (7). The only weakly basic secondary amines 3, 4, and 8 were oxidized to the corresponding ...
![2-methyl-3'-[2-(2-methylpropanoyl)-4-oxoquinazolin-3-yl]spiro[3,3a-dihydro-2H-imidazo[1,2-a]indole-4,5'-oxolane]-1,2'-dione Structure](https://image.chemsrc.com/caspic/141/60676-61-1.png)
![[2-methyl-1-[3-(2-methyl-1,2'-dioxospiro[3,3a-dihydro-2H-imidazo[1,2-a]indole-4,5'-oxolane]-3'-yl)-4-oxoquinazolin-2-yl]propyl] acetate Structure](https://image.chemsrc.com/caspic/082/60676-58-6.png)
