76035-73-9Relevant academic research and scientific papers
Enantioselective glucosylation of (±)-secondary alcohols with plant glucosyltransferases
Shimoda, Kei,Kubota, Naoji,Hamada, Hiroki
, p. 2319 - 2321 (2007/10/03)
Two glucosyltransferases were isolated from plant cell cultures of Catharanthus roseus and Nicotiana tabacum. The enzyme from C. roseus enantioselectively glucosylated (±)-secondary alcohols to give the glucosides of (R)-alcohols, while the glucosylation with that from N. tabacum gave preferentially the glucosides of (S)-alcohols.
The Substrate Specificity of Amyloglucosidase (AMG). Part IV. Hydroxycyclohexyl Glucosides
Bock, Klaus,Refn, Susanne
, p. 373 - 380 (2007/10/02)
Cyclohexyl- and (1R,2R)- and (1S,2S)-hydroxycyclohexyl α-D-glucosides have been synthesised under halide-catalysed glycosylation reaction conditions.Furthermore, phenyl and 2-hydroxyphenyl α-D-glucopyranosides have been synthesised using fusion reactions in 60-70percent yield.Finally, methyl 4-O-(β-L-galactopyranosyl)-β-D-glucopyranoside has been prepared in high yield using silver triflate-promoted glycosylation conditions.All compounds have been characterised by NMR spectroscopy and their preferred solution conformations inferred from the NMR data and hard-sphere exo-anomeric effect calculations (HSEA).All the above-mentioned compounds have been investigated as potential substrates for the enzyme amyloglucosidase (AMG).The results show that only the compounds which have a preferred ground-state conformation similar to that of maltose can act as substrates for the enzyme.
DIASTEREOSELECTIVE D-GALACTOPYRANOSYL TRANSFER TO MESO DIOLS CATALYZED BY β-GALACTOSIDASES
Gais, Hans-Joachim,Zeissler, Axel,Maidonis, Peter
, p. 5743 - 5744 (2007/10/02)
Described is the D-galactopyranosyl transfer from 2 and β-D-lactose, respectively, to the meso diols 1a-e catalyzed by E. coli β-galactosidase and Asp. oryzae β-galactosidase yielding the mono-β-D-galactosides 3a-e with de-values up to 96percent.
