摘要:
This invention contemplates improved methods of enzymatic production of carbohydrates especially fucosylated carbohydrates. Improved syntheses of glycosyl 1- or 2-phosphates using both chemical and enzymatic means are also contemplated. The phosphorylated glycosides are then used to produce sugar nucleotides that are in turn used as donor sugars for glycosylation of acceptor carbohydrates. Especially preferred herein is the use of a disclosed method for fucosylation.
摘要:
This invention contemplates improved methods of enzymatic production of carbohydrates especially fucosylated carbohydrates. Improved syntheses of glycosyl 1- or 2-phosphates using both chemical and enzymatic means are also contemplated. The phosphorylated glycosides are then used to produce sugar nucleotides that are in turn used as donor sugars for glycosylation of acceptor carbohydrates. Especially preferred herein is the use of a disclosed method for fucosylation.
摘要:
2-Methyl-5-hydroxymethyl-and 2,5-dimethyl-3,4-dihydroxypyrrolidines, their processes of preparation and use are disclosed. 5-Azido-5-deoxy-hexulose-1-phosphate compounds and processes of making the same are also disclosed.
摘要:
Nucleoside and nucleotide analogs corresponding to structural Formula I, below, are disclosed, in that structural formula, B is a ##STR1## purine base attached at the 9-position or pyrimidine base, attached at the 1-position R is hydrogen or PO.sub.3 .sup.= M.sup.+2, where M.sup.+2 is a mono- or divalent cation, and R.sup.1 is hydrogen or hydroxyl.
摘要翻译:公开了对应于下面结构式I的核苷和核苷酸类似物,其结构式为B是连接在9-位或嘧啶碱基上的第一个嘌呤碱基,其连接在1-位R是氢或PO 3 = M + 2,其中M + 2是单价或二价阳离子,R1是氢或羟基。
摘要:
A process for the preparation of a 1,5-dideoxyazafuranose or 1,6-dideoxy-azapyranose is disclosed. In such a process, an azido-substituted .alpha.-ketose phosphate having a five- or a six-carbon chain is hydrogenated in the presence of a palladium catalyst. The carbon atom bearing the azido substituent and the carbon atom of the keto group of the .alpha.-ketose phosphate starting material are separated by two or three carbon atoms.
摘要:
Omega-deoxy-azapyranose compounds, processes of making and using the same are disclosed, as are a process of making omega-deoxy-azafuranose compounds.
摘要:
2-Methyl-5-hydroxymethyl- and 2,5-dimethyl-3,4-dihydroxypyrrolidines, 2,5-dimethyl-3,4-dihydroxypyrrolidines, their processes of preparation and use are disclosed. 5-Azido-5-deoxyhexulose-1-phosphate compounds and processes of making the same are also disclosed.