Peptide Synthesis in Aqueous Solution. IV. Preparation and Properties of [<i>p</i>-(Benzyloxycarbonyloxy)phenyl]dimethylsulfonium Methyl Sulfate (Z-ODSP), [<i>p</i>-(<i>t</i>-Butoxycarbonyloxy)phenyl]dimethylsulfonium Methyl Sulfate (Boc-ODSP) and [<i>p</i>-(9-Fluorenylmethyloxycarbonyloxy)phenyl]dimethylsulfonium Methyl Sulfate (Fmoc-ODSP) as Water-Soluble<i>N</i>-Acylating Reagents
order to increase the applications of the water-soluble active ester method, water-soluble acylating reagents, [p-(benzyloxycarbonyloxy)phenyl]dimethylsulfonium methyl sulfate, [p-(t-butoxycarbonyloxy)phenyl]dimethylsulfonium methyl sulfate and [p-(9-fluorenylmethyloxycarbonyloxy)phenyl]dimethylsulfonium methyl sulfate, were synthesized from of p-hydroxyphenyldimethylsulfonium methyl sulfate. These
A practical and efficient synthesis of 2′-aminoacylamino-2′-deoxyadenosine derivatives is reported. EDCI/HOBt-mediated coupling of a 3′,5′-diprotected 2′-amino-2′-deoxyadenosine derivative to various N-Cbz-l-amino acid derivatives followed by global deprotection affords analytically pure 2′-aminoacylamino-2′-deoxyadenosine derivatives without the necessity for preparative HPLC purification. These compounds
Formation and isolation of simple, stable, acyclic di- and tripeptide hemiacetals
作者:John F Miller、Andrew Spaltenstein
DOI:10.1016/0040-4039(96)00385-1
日期:1996.4
Di- and tripeptide aldehydes were found to undergo reaction with methanol to afford the corresponding methyl hemiacetals. These compounds, which possessed unusual stability, were isolated and characterized using NMR techniques and a chemical correlation experiment.