An efficient and facile, solvent-free peptide synthesis assisted by microwaveirradiation, using DIC/HONB as the coupling reagent combination is reported. Key features of this original protocol are solvent-freesynthesis, very short reaction time and scalability without affecting yield and purity. The versatility of the method was successfully demonstrated by synthesizing several biologically active
Methods of inhibiting HSP70 proteins, agents causing the inhibition of HSP70 proteins, and the effects of such inhibition on cell proliferation. Anti-microbial agents comprising small molecules, or pharmaceutical salts thereof, disclosed herein and further methods of use thereof are also disclosed. The disclosed small molecules, or pharmaceutical salts thereof, are effective in inhibiting microbial chaperone activity in microbes, such as homologs of HSP70. The disclosed small molecules, or pharmaceutical salts thereof, are also effective for the therapeutic treatment of cancer.
Proline derivatives of the formulae: ##STR1## wherein R.sup.1 through R.sup.11 have defined values, and acid- and base-addition salts thereof, and equilibrium addition compounds of the aldehyde group thereof; processes for their preparation; pharmaceutical compositions; and intermediates for preparing said proline derivatives. The proline derivatives are human leukocyte elastase inhibitors which are useful, for example, in treating pulmonary emphysema.
good chemical yields and with 98 % ee using a diastereoselective alkylation; these alanine derivatives were then used as Tyr11 replacements in the construction of neurotensin (NT)[8–13] analogues. The new NT analogues showed improved plasma stability and selectivity towards NTS1 thus preserving the hypotensive properties of the native peptide.
A thermodynamic and spectroscopic study of the complexes of the undecapeptide Substance P, of its N-terminal fragment and of model pentapeptides containing two prolyl residues with copper ions
作者:Leslie D. Pettit、Wojciech Bal、Michel Bataille、Claude Cardon、Henryk Kozlowski、Marie Leseine-Delstanche、Simon Pyburn、Andrea Scozzafava
DOI:10.1039/dt9910001651
日期:——
A potentiometric and spectroscopic study of the complexes formed with H+ and Cu2+ and a potentiometric study of the complexes with substance P have been made. The results demonstrate the profound effect which the prolylresidue can have, when incorporated in a peptide chain, on the formation of copper(II)-peptide complexes. It acts as a break-point to co-ordination and encourages the formation of