An object of the present invention is to provide a method for efficiently chemically synthesizing biomolecules including a nucleotide (nucleic acid), a peptide (protein), or a sugar chain, as representative examples. The present invention provides a method of solid-phase synthesis of sugar chain(s) for synthesizing multiple types of sugar chains in at least one sugar chain synthesis reaction system comprising multiple types of monosaccharide units, which is characterized in that it comprises changing the temperature in the sugar chain synthesis reaction system depending on the temperature rising rate that has been determined based on a decrease in side reaction(s) in the reaction system as an indicator.
glycosyl fluorides using sulfur(VI) hexafluoride as an inexpensive and safe fluorinating agent and 4,4′-dimethoxybenzophenone as a readily available organic photocatalyst. This mild method was employed to generate 16 different glycosyl fluorides, including the substrates with acid and base labile functionalities, in yields of 43%–97%, and it was applied in continuous flow to accomplish fluorination on an
Studies directed toward the total synthesis of polycavernoside A. Enantioselective synthesis of the disaccharide component
作者:Jeffrey N. Johnston、Leo A. Paquette
DOI:10.1016/0040-4039(95)00789-f
日期:1995.6
Adaptation of the Mukaiyama-Nicolaou protocol to the coupling of a monounprotected thioglycoside to a glycosyl fluoride is capable of delivering the unusual disaccharide present in the title toxin.
[EN] METHOD FOR PREPARING 2'-O-FUCOSYLLACTOSE<br/>[FR] PROCÉDÉ DE PRÉPARATION DU 2'-O-FUCOSYLLACTOSE
申请人:BASF SE
公开号:WO2017153452A1
公开(公告)日:2017-09-14
The present invention relates to a method for preparing 2'-O-fucosyllactose and to the protected fucosyl donor of the formula (I) used in this method. The method comprises reacting the fucose derivative of the formula (I) below with the compound of the general formula (II), in the presence of an activating reagent. In the formulae (I) and (II), the variables are each defined as follows: X is Br or a S-bound radical, namely -SCN, -S(O)n-RX1 or -S-RX2, wherein RX1 preferably is an optionally substituted phenyl, and RX2 preferably is C1-C4-alkyl, 2-oxazolin-2-yl, 2-thiazolin-2-yl, benzoxazol-2-yl, benzothiazol-2-yl or pyridin-2-yl; RSi are the same or different and are radicals of the formula SiRaRbRc, wherein Ra, Rb and Rc preferably are each methyl; R1 is a C(=O)-R11 radical or an SiR12R13R14 radical, wherein R11 is preferably methyl, phenyl or tert-butyl, and R12, R13 and R14 preferably are each methyl; R2 are the same or different and are C1-C8-alkyl or together form a linear C3-C6-alkanediyl, which is unsubstituted or has 1 to 6 methyl groups as substituents; R3 are the same or different and are C1-C8-alkyl or together form a linear C1-C4-alkanediyl, which is unsubstituted or has 1 to 6 methyl groups as substituents.
An object of the present invention is to provide a method for efficiently chemically synthesizing biomolecules including a nucleotide (nucleic acid), a peptide (protein), or a sugar chain, as representative examples. The present invention provides a method of solid-phase synthesis of sugar chain(s) for synthesizing multiple types of sugar chains in at least one sugar chain synthesis reaction system comprising multiple types of monosaccharide units, which is characterized in that it comprises changing the temperature in the sugar chain synthesis reaction system depending on the temperature rising rate that has been determined based on a decrease in side reaction(s) in the reaction system as an indicator.