Stereoselective synthesis of cyclobutyl γ-amino acids leading to branched peptides with a cyclobutane core
摘要:
Alternative synthetic routes are provided to synthesize gamma-amino acids in their free form or conveniently protected for their selective incorporation into ramified gamma-peptides with a cyclobutane core. The key synthetic-step involves the stereoselective conjugate addition of nitromethane to chiral cyclobutyl alkenoates prepared from (-)-verbenone. (C) 2008 Elsevier Ltd. All rights reserved.
Stereoselective synthesis of cyclobutyl GABA analogues and related compounds from (−)-(S)-verbenone
作者:Albertina G. Moglioni、Beatriz N. Brousse、Angel Álvarez-Larena、Graciela Y. Moltrasio、Rosa M. Ortuño
DOI:10.1016/s0957-4166(02)00137-4
日期:2002.4
The highly stereoselective conjugate addition of nitromethane to α,β-unsaturated cyclobutyl esters derived from (−)-(S)-verbenone has been executed to afford the adducts as single stereoisomers in good yields. These products furnish cyclobutyl GABA analogues and γ-lactams which, in turn, can be used as precursors of pyrrolidines. Moreover, both the enantiopure γ-nitro esters and the derived γ-amino
Divergent synthetic routes to biologically relevant types of compounds: chiral polyfunctional γ-lactams and amino acids
作者:Jordi Aguilera、Albertina Moglioni、Àlex Mor、Jimena Ospina、Ona Illa、Rosa M. Ortuño
DOI:10.1016/j.tet.2014.07.011
日期:2014.9
and versatile synthetic routes leading to the title compounds are described. They start from a common chiral precursor derived from (−)-(S)-verbenone and afford polyfunctional γ-lactams and γ- and ε-amino acids. The cyclobutane moiety in these molecules acts as a chiral and polyfunctional platform providing stereogenic centres with unambiguous absolute configuration that control the chirality of the
Synthesis of Chiral Functionalised Cyclobutylpyrrolidines and Cyclobutylamino Alcohols from (-)-(<i>S</i>)-Verbenone - Applications in the Stabilisation of Ruthenium Nanocatalysts
作者:Jordi Aguilera、Isabelle Favier、Marta Sans、Àlex Mor、Ángel Álvarez-Larena、Ona Illa、Montserrat Gómez、Rosa M. Ortuño
DOI:10.1002/ejoc.201403176
日期:2015.2
Stereoselective and efficient synthetic routes to pyrrolidines and amino alcohols anchored to chiral polysubstituted cyclobutane moieties have been developed from (–)-(S)-verbenone. These original frameworks, in particular the diamines and amino alcohols, are appropriate stabilisers of metallic nanoparticles, especially for the synthesis of ruthenium nanomaterials, which found catalytic applications
Stereoselective synthesis of cyclobutyl γ-amino acids leading to branched peptides with a cyclobutane core
作者:Jordi Aguilera、Raquel Gutiérrez-Abad、Àlex Mor、Albertina G. Moglioni、Graciela Y. Moltrasio、Rosa M. Ortuño
DOI:10.1016/j.tetasy.2008.12.019
日期:2008.12
Alternative synthetic routes are provided to synthesize gamma-amino acids in their free form or conveniently protected for their selective incorporation into ramified gamma-peptides with a cyclobutane core. The key synthetic-step involves the stereoselective conjugate addition of nitromethane to chiral cyclobutyl alkenoates prepared from (-)-verbenone. (C) 2008 Elsevier Ltd. All rights reserved.