Stereoselective α-Glucosylation with Tetra-<i>O</i>-benzyl-α-D-glucose and a Mixture of Trimethylsilyl Bromide, Cobalt(II) Bromide, Tetrabutylammonium Bromide, and a Molecular Sieve. A Synthesis of 3,6-Di-<i>O</i>-(α-D-glucopyranosyl)-D-glucose
作者:Shinkiti Koto、Naohiko Morishima、Chiharu Kusuhara、Shigeko Sekido、Toyosaku Yoshida、Shonosuke Zen
DOI:10.1246/bcsj.55.2995
日期:1982.9
A mixture of trimethylsilyl bromide, cobalt(II) bromide, tetrabutylammonium bromide, and a molecular sieve (4A) is effective for the stereoselective, one-stage α-glucosylation of alcohol with 2,3,4,6-tetra-O-benzyl-α-D-glucopyranose in dichloromethane. Using this procedure, several disaccharide derivatives as well as O-α-D-glucopyranosyl-(1→3)]-O-[α-D-glucopyranosyl-(1→6)]-D-glucopyranose are synthesized
A Stereoselective One-stage α-Glucosylation with 2,3,4,6-Tetra-<i>O</i>-benzyl-α-D-glucopyranose and a Mixture of Methanesulfonic Acid, Cobalt(II) Bromide, and Tetraethylammonium Perchlorate
作者:Shinkiti Koto、Naohiko Morishima、Shonosuke Zen
DOI:10.1246/bcsj.55.1543
日期:1982.5
A one-stage procedure for the stereoselective α-glucosylation of alcohol with 2,3,4,6-tetra-O-benzyl-α-D-glucopyranose and a mixture of methanesulfonic acid, cobalt(II) bromide, and tetraethylammonium perchlorate is described. The mechanism of the glucosylation reaction is discussed.
醇与 2,3,4,6-四-O-苄基-α-D-吡喃葡萄糖和甲磺酸、溴化钴 (II) 和四乙基高氯酸铵的混合物的立体选择性 α-葡萄糖基化的一步程序是描述。讨论了糖基化反应的机理。
The Glucosylation of Several Alcohols with Tetra-<i>O</i>-benzyl-α-D-glucopyranose and a Mixture of<i>p</i>-Nitrobenzenesulfonyl Chloride, Silver Trifluoromethanesulfonate, and Triethylamine
作者:Shinkiti Koto、Tadaaki Sato、Naohiko Morishima、Shonosuke Zen
DOI:10.1246/bcsj.53.1761
日期:1980.6
A novel glucosylation of several alcohols using 2,3,4,6-tetra-O-benzyl-α-d-glucopyranose and a ternary mixture of p-nitrobenzenesulfonyl chloride, silver trifluoromethanesulfonate, and triethylamine is presented.
ONE-STAGE α-GLUCOSYLATION USING TETRA-<i>O</i>-BENZYL-α-D-GLUCOSE AND MIXTURE OF TRIMETHYLSILYL BROMIDE, COBALT(II) BROMIDE, TETRABUTYLAMMONIUM BROMIDE, AND MOLECULAR SIEVE
作者:Naohiko Morishima、Shinkiti Koto、Chiharu Kusuhara、Shonosuke Zen
DOI:10.1246/cl.1981.427
日期:1981.3.5
The one-stage α-glucosylation using 2,3,4,6-tetra-O-benzyl-α-D-glucopyranose and a mixture of trimethylsilyl bromide, cobalt(II) bromide, and tetrabutylammonium bromide in the presence of molecular sieve is presented.
在分子筛存在下使用 2,3,4,6-四-O-苄基-α-D-吡喃葡萄糖和三甲基溴化甲硅烷、溴化钴 (II) 和溴化四丁基铵的混合物进行的一步 α-葡萄糖基化是呈现。
The synthesis of oligonucleotides that contain 2,4-dinitrophenyl reporter groups
作者:David W. Will、Clare E. Pritchard、Tom Brown
DOI:10.1016/0008-6215(92)84170-w
日期:1992.9
The synthesis of non-nucleoside-based phosphoramidites that bear the 2,4-dinitrophenyl group is reported. These labelled phosphoramidites, which have been used in solid-phase oligonucleotide synthesis to attach single and multiple dinitrophenyl groups to the 5'-end of oligonucleotides, are entirely compatible with the normal oligonucleotide synthesis cycle. Multiple labelling can be performed readily in high yield and the resulting oligonucleotides can be purified readily by reversed-phase h.p.l.c. The labelled oligonucleotides have been detected using monoclonal and polyclonal anti-dinitrophenyl antibodies.