diol present on the tetrahydrofuran ring. The totalsynthesis was completed by an indole oxidation and electrophilic aromatic substitution sequence to construct isatisine A acetonide, which was then carried forward to the antipode of the natural product. The absolute configuration of the natural enantiomer (−)-isatisine A was determined to be C2(S), C9(R), C10(S), C12(R), and C13(R).