193410-63-8Relevant academic research and scientific papers
Application of Negishi cross-coupling to the synthesis of the cyclic tripeptides OF4949-III and K-13
Nolasco, Luca,Gonzalez, Manuel Perez,Caggiano, Lorenzo,Jackson, Richard F. W.
experimental part, p. 8280 - 8289 (2010/02/17)
(Chemical Equation Presented) Syntheses of the cyclic tripeptides OF4949-III 1 and K-13 2 are reported, in which the key steps are intermolecular and intramolecular Negishi cross-coupling reactions, respectively. In addition, the synthesis of a protected
Pd-catalysed C-C macrocyclisation of a simple tripeptide: Efficient total synthesis of K-13
Perez-Gonzalez,Jackson
, p. 2423 - 2424 (2007/10/03)
The cyclic tripeptide K-13 has been prepared in 11 steps from commercially available starting materials (11% overall yield); the key step is the Pd-catalysed macrocyclisation of the zinc reagent prepared by selective insertion of zinc into the aliphatic C
Total synthesis of (S,S)-isodityrosine
Jung, Michael E.,Starkey, Laurie S.
, p. 8815 - 8824 (2007/10/03)
The novel dimeric amino acid isodityrosine I has been synthesized by a route which uses a new method of diaryl ether preparation. Nucleophilic addition of a protected tyrosine to cyclobexenone oxide and the Pd(0)- catalyzed coupling of an aryl iodide with a protected iodoalanine derivative are the key steps in this synthesis. This represents one of the first efficient syntheses of this molecule beginning with two naturally-occurring amino acids as inexpensive starting materials.
