White, James D. published the artcileSynthesis of the ABCD ring system of Vinca alkaloids using tandem intramolecular [2 + 2]-photocycloaddition-retro-Mannich fragmentation, HPLC of Formula: 167015-84-1, the publication is Heterocycles (2014), 88(2), 899-910, database is CAplus.
Irradiation of 3-alkylindole (E)- and (Z)-I gave spiropyrroline II via [2+2]-photocycloaddition and subsequent in situ retro-Mannich fragmentation of a fused cyclobutane. N-Alkylation of II followed by treatment of the resulting pyrrolinium salt with sodium hydride and lithium diisopropylamide generated a dienolate dianion which underwent cyclization to afford tetracyclic products, e.g., III. The configuration of III was proven by a series of NMR experiments which established that ring C in the major stereoisomer resides in a boat conformation. The prepared tetracycles contain structural features including the ABCD ring system and substituents found in certain alkaloids of the Vinca family.
Heterocycles published new progress about 167015-84-1. 167015-84-1 belongs to indole-building-block, auxiliary class Indols, name is tert-Butyl 3-(2-aminoethyl)-1H-indole-1-carboxylate, and the molecular formula is C6H10O7, HPLC of Formula: 167015-84-1.
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