Abstract Oxidation with perbenzoic acid derivatives in neutral organic solvents of 11- desmethylellipticine (at the pyrido-N) and oxa-ellipticine afforded the corresponding N- Oxides. Thia-ellipticine afforded the sulfone N-oxide, which underwent N-deoxygenation with triphenylphosphine to yield thia-ellipticine sulfone.
![[1]Benzothieno[2,3-g]isoquinoline,5,11-dimethyl-, 6,6-dioxide Structure](https://image.chemsrc.com/caspic/315/23018-38-4.png)
![[1]Benzothieno[2,3-g]isoquinoline,5,11- dimethyl- Structure](https://image.chemsrc.com/caspic/244/21339-68-4.png)