Indium(III) Triflate–Mediated One-Step Preparation of Glycosyl Halides from Free Sugars
摘要:
In(OTf)3 has been found to be an efficient catalyst for the direct conversion of reducing sugars to their respective acylated glycosyl halides in good yields under mild conditions. The glycosyl halides so obtained can be converted to alkyl glycosides in the same pot by reacting them with the respective alcohols in good yield.
Facile synthesis of the sugar cores from phenylpropanoid glycosides
作者:Zhong-Jun Li、He-Qing Huang、Meng-Shen Cai
DOI:10.1016/0008-6215(94)00226-6
日期:1994.12
6-O-benzylidene-α- d -glucopyranoside (2) with benzoyl chloride- imidazole in anhydrous chloroform, reacted with 2, 3, 4-tri-O-benzoyl-α- l -rhamnopyranosyl bromide to give a disaccharidederivative (4), and an important intermediate (5) was obtained by cleavage of its acetal. Treatment of 5 with a series of glycopyranosyl bromides, protected by acetyl or benzoyl groups in benzene-nitromethane in the presence
Synthesis of quercetin 3-O-(2′′-galloyl)-α-l-arabinopyranoside
作者:Ming Li、Xiuwen Han、Biao Yu
DOI:10.1016/s0040-4039(02)02139-1
日期:2002.12
Quercetin 3-O-(2′′-galloyl)-α-l-arabinopyranoside, a plant flavonol glycoside showing HIV-1 integrase inhibition, antibacterial, and antioxidant activities, was synthesized, with the glycosylation of the flavonol 3-OH being explored.
Chemoenzymatic Synthesis of Naturally Occurring (Z)-3-Hexenyl 6-O-Glycosyl-β-D-glucopyranosides
作者:Hiroyuki Akita、Masashi Kishida、Mikio Fujii、Yoshiteru Ida
DOI:10.3987/com-05-10474
日期:——
Chemoenzymatic Synthesis of Naturally Occurring Geranyl 6-O-Glycosyl-b-D-glucopyranosides
作者:Hiroyuki Akita、Eiji Kawahara、Mikio Fujii、Yoshiteru Ida
DOI:10.3987/com-05-10640
日期:——
Indium(III) Triflate–Mediated One-Step Preparation of Glycosyl Halides from Free Sugars
作者:Santosh Kumar Giri、K. P. Ravindranathan Kartha
DOI:10.1080/00397910903419886
日期:2010.10.20
In(OTf)3 has been found to be an efficient catalyst for the direct conversion of reducing sugars to their respective acylated glycosyl halides in good yields under mild conditions. The glycosyl halides so obtained can be converted to alkyl glycosides in the same pot by reacting them with the respective alcohols in good yield.