Yang, Cai-Guang published the artcilePreparing Functional Bis(indole) Pyrazine by Stepwise Cross-coupling Reactions: An Efficient Method to Construct the Skeleton of Dragmacidin D, Formula: C15H14BNO4S, the publication is Journal of Organic Chemistry (2002), 67(26), 9392-9396, database is CAplus and MEDLINE.
A direct approach for selective construction of properly substituted bis(indole) pyrazine I, the skeleton of a marine alkaloid dragmacidin D, has been developed. The key steps involved the regioselective introduction of two indole units, using the palladium(0)-catalyzed Suzuki and the Stille cross-coupling reactions sequentially.
Journal of Organic Chemistry published new progress about 149108-61-2. 149108-61-2 belongs to indole-building-block, auxiliary class Indole,Boronic acid and ester,Sulfamide,Benzene,Boronic Acids,Boronic Acids,Boronic acid and ester,, name is (1-tosyl-1H-Indol-3-yl)boronic acid, and the molecular formula is C40H35N7O8, Formula: C15H14BNO4S.
Referemce:
https://www.nature.com/articles/s41429-020-0333-2,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles