34994-11-1Relevant academic research and scientific papers
Total Syntheses of (+)-Hypusine and Its (2S,9S)-Diastereomer
Bergeron, Raymond J.,Xia, Michael X. B.,Phanstiel, Otto
, p. 6804 - 6806 (2007/10/02)
The total synthesis of (2S,9R)-hypusine dihydrochloride, an unusual amino acid constituent of the eukaryotic translation initiation factor eIF-4D, and its (2S,9S) diastereomer is described.The key step in the syntheses involves Nε-alkylation of Nε-benzyl-Nα-(L)-lysine benzyl ester with (R)- or (S)-epichlorhydrin to give the respective (2S,9R) and (2S,9S) chlorohydrins.Subsequent displacement of the respective chlorides by cyanide ion provides the protected hypusine skeletons.The final step, hydrogenation over PtO2 in AcOH followed by neutralization and reacidification, yielded the respective (2S,9S)- and (2S,9R)-hypusine dihydrochlorides in excess of 50percent overall yield.
Chemistry of Naturally Occurring Polyamines. 8. Total Synthesis of (+)-Hypusine
Tice, Colin M.,Ganem, Bruce
, p. 5048 - 5050 (2007/10/02)
As part of a program to synthesize biologically interesting polyamines and their conjugates, we report a new approach to the synthesis of hypusine (1), an unusual amino acid constituent of the eucaryotic translation initiation factor elF-4D.Hypusine is fo
Synthesis and Stereochemistry of Hypusine, a New Amino Acid in Bovine Brain
Shiba, Tetsuo,Akiyama, Hitoshi,Umeda, Isao,Okada, Satoshi
, p. 899 - 903 (2007/10/02)
Hypusine, a new basic amino acid occurring in the homogenate of bovine brain tissue, was synthesized to determine the absolute structure.Nα-Benzyloxycarbonyl-L-lysine benzyl ester was coupled with (S)- or (R)-4-benzyloxycarbonylamino-1-bromo-2-butanol derived from L- or D-malic acid, respectively.The products were deprotected by catalytic dehydrogenation.One of the synthetic compounds, i.e., (2S,9R)-2,11-diamino-9-hydroxy-7-azaundecanoic acid, was completely identical with natural hypusine in all respects.
