Boc protected NH2-PEG-COOH,Boc

Synthesis of Cbz-Protected Ketomethylene Dipeptide Isosteres

1 are chemically characterized by a 1,4-disposition of the carbonyl groups (ketone and carboxylate) and have an alkyl group at C-2 that is a chiral center. Protecting groups at amino nitrogen (typically carbamate such as Cbz or Boc) and the carboxyl group

Synthesis and Use of Pseudopeptides Derived from 1,2,4-Oxadiazole-, 1,3,4-Oxadiazole-, and 1,2,4-Triazole-based Dipeptidomimetics

in size and shape but show variations in aromatic, electrostatic, and hydrogen bonding properties. These variations provide opportunities to study properties of importance for amide bond mimicry. The derivatives are synthesized from protected natural amino

Synthesis of (2S, 4S, 5S)-5-(t-Butoxycarbonylamino)-4-(t-Butyldimethylsilyloxy)-2-Isopropyl-7-Methyl Octanoic Acid

-4 and C-5 centers ( 3 ). After formatron of the mesylate, from the recycled material the amine function is introduced through azrde displacement of the mesylate, followed by reduction ( 4 ) and protectron with the t -BOC group. Finally, the lactone