Total synthesis of (+)-herbindole A, (+)-herbindole B, and (+)-herbindole C. Determination of the absolute configuration of the natural herbindoles

Article abstract of DOI:10.1016/S0040-4039(00)61322-9

(6R, 8S)-(+)-Herbindoles A (3a), B (3b), and C (3c) were synthesized from the chirality-definite Diels-Alder adduct 7 using an acid-induced indole cyclization reaction of 4 to 5, as well as novel reactions of the PhSO₂ group of 24 with Mg in Me