Akitake, Masahiro published the artcileAccess to γ-Carbolines: Synthesis of Isocryptolepine, Quality Control of 89694-44-0, the publication is Journal of Organic Chemistry (2021), 86(24), 17727-17737, database is CAplus and MEDLINE.
A new method to synthesize γ-carboline derivatives has been developed starting from 3,5-dibromo-4-pyridinamine by monoarylation using the Suzuki-Miyaura cross-coupling reaction followed by the base-mediated ring closure to pyrrole formation. Synthesis of a series of γ-carboline derivations from the 4-brominated γ-carboline 4a has been achieved by employing various coupling reactions and N-alkylations. This method has been applied for the synthesis of the antimalarial and anticancer natural product isocryptolepine. The photophys. properties of novel γ-carboline derivations are also reported.
Journal of Organic Chemistry published new progress about 89694-44-0. 89694-44-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is 2-Bromo-5-methoxybenzene boronic acid, and the molecular formula is C7H8BBrO3, Quality Control of 89694-44-0.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary