Synthesis of a Pipecolic Acid-Based Bis-amino Acid and Its Assembly into a Spiro Ladder Oligomer
摘要:
The synthesis of a new pipecolic acid-based bis-amino acid building block 1 (and 2) is presented. Assembly of this monomer into a spiro ladder oligomer 3 utilizing solid-phase synthesis followed by in situ activation by dicyclohexylcarbodiimide and N-hydroxysuccinimide has been demonstrated. The structure of oligomer 3, determined in aqueous solution using two-dimensional NMR, reveals that the oligomer forms a left-handed helix and that each monomer unit adopts a chair conformation.
Synthesis of a Pipecolic Acid-Based Bis-amino Acid and Its Assembly into a Spiro Ladder Oligomer
摘要:
The synthesis of a new pipecolic acid-based bis-amino acid building block 1 (and 2) is presented. Assembly of this monomer into a spiro ladder oligomer 3 utilizing solid-phase synthesis followed by in situ activation by dicyclohexylcarbodiimide and N-hydroxysuccinimide has been demonstrated. The structure of oligomer 3, determined in aqueous solution using two-dimensional NMR, reveals that the oligomer forms a left-handed helix and that each monomer unit adopts a chair conformation.
Synthesis of a Pipecolic Acid-Based Bis-amino Acid and Its Assembly into a Spiro Ladder Oligomer
作者:Sharad Gupta、Bhaskar C. Das、Christian E. Schafmeister
DOI:10.1021/ol0507672
日期:2005.7.1
The synthesis of a new pipecolic acid-based bis-amino acid building block 1 (and 2) is presented. Assembly of this monomer into a spiro ladder oligomer 3 utilizing solid-phase synthesis followed by in situ activation by dicyclohexylcarbodiimide and N-hydroxysuccinimide has been demonstrated. The structure of oligomer 3, determined in aqueous solution using two-dimensional NMR, reveals that the oligomer forms a left-handed helix and that each monomer unit adopts a chair conformation.