82610-83-1Relevant articles and documents
Exploitation of subtilisin BPN' as catalyst for the synthesis of peptides containing noncoded amino acids, peptide mimetics and peptide conjugates
Moree, Wilna J.,Sears, Pamela,Kawashiro, Katsuhiro,Witte, Krista,Wong, Chi-Huey
, p. 3942 - 3947 (1997)
The ability of the serine protease subtilisin BPN' to catalyze peptide bond formation between fragments containing noncoded amino acids, peptide mimetics, and peptide conjugates in a kinetic approach was explored. It was found that the enzyme accepts nume
SYNTHESIS OF PHOSPHONOPEPTIDES WITH THE USE OF PIVALOYL CHLORIDE
Solodenko, V. A.,Kasheva, T. N.,Kukhar', V. P.
, p. 2488 - 2489 (2007/10/02)
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STUDIES ON THE SYNTHESIS OF CHEMOTHERAPEUTICS. PART XIII. SYNTHESIS AND BIOLOGICAL STUDIES ON PHOSPHONOPEPTIDES HAVING ALKYL-, PHENYL-, AND HETEROCYCLIC SUBSTITUENTS.
Kametani, Tetsuji,Suzuki, Yukio,Kigasawa, Kazuo,Hiiragi, Mineharu,Wakisaka, Kikuo,et al.
, p. 295 - 319 (2007/10/02)
New antibacterial phosphonopeptides (3) were synthesized in order to improve the stability against hydrolysis by peptidase and the antibacterial spectra.Synthesis of them was accomplished by condensation of the N-carbobenzoxyamino acid with diethyl aminoalkylphosphonate followed by deprotection and hydrolysis.The antibacterial activity was evaluated in a defined medium and the stability against hydrolysis by rat liver homogenates was examined.Chemical modification of the N-terminal amino acid moiety of the phosphonopeptide containing sulfur or oxygen atom at β- or γ-position of the N-terminal α-amino acid residue lost rapidly their in vivo activity in spite of the high in vitro activity.The para substituted phenylalanyl-1-aminoethyl-phosphonic acids showed higher stability and slightly lower activity compared with those of the corresponding ortho- and meta-substituted isomers.Some of these para-substituted compounds (e.g. 9β, 10β, and 19β) exhibited the same level of the biological activity as that of Alafosfalin (1) in potency of the activity, broadness of the spectrum, and the serum level in mice after peroral administration.Phosphonopeptides consisted of unnatural amino acids and aminomethylphosphonic acid showed generally the extended spectra and activities, but these compounds were very fragile to hydrolysis by peptidase.None of phosphonopeptides containing 2-aminoethylphosphonic acid had the activity.