Zobrazeno 1 - 10
of 801
pro vyhledávání: '"R. B. Johns"'
Publikováno v:
International Journal of Peptide and Protein Research. 33:428-438
A general method for the synthesis of O-phosphonotyrosyl peptides using solid phase methodology is described. Protected O-phosphonotyrosine derivatives with the general structure Boc-Tyr(R2PO3)-OH (R = methyl, ethyl or benzyl) were prepared as potent
Publikováno v:
Scopus-Elsevier
We report here the synthesis of iberiotoxin (IbTX), a 37-amino acid peptide containing three disulfide bridges, and a series of mono-looped analogues. All syntheses were conducted using Fmoc chemistry. Synthesis of IbTX gave a product which was indis
Autor:
R. B. Johns, Noel F. Dunlop
Publikováno v:
Organic Geochemistry. 30:1301-1309
A short time variable temperature heat treatment in moist air at 250°C has been applied to an Indonesian sub-bituminous coal to produce a thermally stabilised coal product and to effect an irreversible lowering of the Equilibrium Moisture Content. E
Autor:
R B, Johns
Publikováno v:
Dental update. 40(4)
Autor:
R. B. Johns, Jill H. Rogerson
Publikováno v:
Organic Geochemistry. 25:1-8
An organic geochemical study of the benthic sediments taken over a transect of Organic Lake is reported. Fatty acids, hydroxyacids, and sterols were the three major geolipid classes isolated from the total solvent extracts. The fatty acid chain lengt
Publikováno v:
Letters in Peptide Science. 2:345-351
Positive and negative ion FAB mass spectrometry were found to be useful for the structural analysis of phosphorylated peptides containing multiple O-phosphoseryl residues. The positive ion FAB mass spectra obtained for Ac-Ser(P)-Ser(P)-NHMe and Ac-Se
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 105:1-10
The interaction of diphenyl phosphorochloridate and three dialkyl phosphorochloridates (alkyl = Et, Me, Bzl) with pyridine was shown by 31P NMR spectroscopy to lead to the formation of a diorganyl phosphoropyridinium intermediate. In the case of diet
Publikováno v:
Organic Geochemistry. 21:1027-1035
Surface sediments sampled along a transect Cairns Harbour and Arlington Reef together with a core taken at the 20 m depth line have been analysed for geochemical parameters and organic geochemical biomarkers. The data show a maximum occurs in the dep
Publikováno v:
Journal of the Textile Institute. 84:577-581
The amine treatment of phosphorylated wool (phosphorus trichloride followed by basic hydrolysis) with either N-methylamine or tetraethylenepentamine gave a product which had marked shrink-resist properties, N-methylamine being the more effective reag
Publikováno v:
ChemInform. 22