Enantioselective Alkoxycyclization of 1,6‐Enynes with Gold(I)‐Cavitands: Total Synthesis of Mafaicheenamine C
作者:Inmaculada Martín‐Torres、Gala Ogalla、Jin‐Ming Yang、Antonia Rinaldi、Antonio M. Echavarren
DOI:10.1002/anie.202017035
日期:2021.4.19
cyclization has been applied for the first totalsynthesis of carbazole alkaloid (+)‐mafaicheenamine C and its enantiomer, establishing its configuration as R. The cavity effect was also evaluated in the cycloisomerization of dienynes. A combination of experiments and theoretical studies demonstrates that the cavity of the gold(I) complexes forces the enynes to adopt constrained conformations, which results
Carbazole alkaloid mukonine 6b was prepared from 3-formylindole in three steps (32% overall yield). The key step was the base-promoted cyclization of a mixed anhydride of mono ester mono acid 5 (C) 1998 Elsevier Science Ltd. All rights reserved.
Corral, Jose M. Miguel; Gordaliza, Marina; Castro, M. Angeles, Synthesis, 2000, # 1, p. 154 - 164
作者:Corral, Jose M. Miguel、Gordaliza, Marina、Castro, M. Angeles、Salinero, Miguel A.、Dorado, Jose M.、Feliciano, Arturo San
DOI:——
日期:——
Divergent Syntheses of Carbazole Alkaloids Clausenapin, Indizoline, Claulansine M, and Clausenaline D
We described the first total syntheses of clausenapin, indizoline, claulansine M, and a novel synthetic route to clausenaline D via divergent method. Key steps involved TFAA-mediated intramolecular acylation to construct the carbazole core and subsequent Claisen rearrangement to generate key intermediates for further elaboration to target molecules.