Direct C-glycosylation of indole with unprotected mono-, di-, and trisaccharides: a one-pot synthesis of 1-deoxy-1,1-bis(3-indolyl)alditols
摘要:
1-Deoxy-1, 1-bis(3-indolyl)alditols were synthesized by reacting 2.5 equiv of indole with 1 equiv of the following seven monosaccharides (D-galactose, D-mannose, D-allose, 2-deoxy-D-arabinohexose (2-deoxy-D-glucose), D-arabinose, L-arabinose, D-xylose), two disaccharides (D-lactose, D-maltose), and a trisaccharide (D-maltotriose) in 1:1 EtOH-H(2)O at room temperature, or at 40 or 50 degrees C, in the presence of 5 mol % scandium(III) trifluoromethanesulfonate [Sc(OTf)(3)], in a one-pot reaction, in 36-95% yields. (c) 2006 Elsevier Ltd. All rights reserved.
The present invention has objects to provide a thermostable cellobiose 2-epimerase, its preparation and uses. The present invention attains the above objects by providing a thermostable cellobiose 2-epimerase, a DNA encoding the enzyme, a recombinant DNA and transformant comprising the DNA, a process for producing the enzyme, and a process for producing isomerized saccharides using the enzyme.
CELLOBIOSE 2-EPIMERASE, PROCESS FOR PRODUCING SAME, AND USE OF SAME
申请人:Hayashibara Co., Ltd.
公开号:EP2395080B1
公开(公告)日:2014-08-06
US9175282B2
申请人:——
公开号:US9175282B2
公开(公告)日:2015-11-03
Direct C-glycosylation of indole with unprotected mono-, di-, and trisaccharides: a one-pot synthesis of 1-deoxy-1,1-bis(3-indolyl)alditols
作者:Shingo Sato、Hiroya Masukawa、Toshihiro Sato
DOI:10.1016/j.carres.2006.08.018
日期:2006.11
1-Deoxy-1, 1-bis(3-indolyl)alditols were synthesized by reacting 2.5 equiv of indole with 1 equiv of the following seven monosaccharides (D-galactose, D-mannose, D-allose, 2-deoxy-D-arabinohexose (2-deoxy-D-glucose), D-arabinose, L-arabinose, D-xylose), two disaccharides (D-lactose, D-maltose), and a trisaccharide (D-maltotriose) in 1:1 EtOH-H(2)O at room temperature, or at 40 or 50 degrees C, in the presence of 5 mol % scandium(III) trifluoromethanesulfonate [Sc(OTf)(3)], in a one-pot reaction, in 36-95% yields. (c) 2006 Elsevier Ltd. All rights reserved.
Haworth et al., Journal of the Chemical Society, 1934, p. 302