We just published the first total syntheses of several bis-b-carboline alkaloids, picrasidines G, S, R, and T, and natural product-like derivatives in a divergent manner. The work was recently published on Chemical Science.

Divergent total syntheses of ITHQ-type bis-bcarboline alkaloids by regio-selective formal aza-[4
+ 2] cycloaddition and late-stage C–H
functionalization.

                                                                          https://pubs.rsc.org/en/journals/journalissues/sc#!recentarticles&adv