156769-28-7Relevant articles and documents
Synthesis of L-altrose and some derivatives
Lunau, Nathalie,Meier, Chris
, p. 6260 - 6270 (2013/01/15)
A convenient approach to the chemical synthesis of L-altrose (1) and its 6-deoxy derivative 2 has been developed by starting from D-galactose (9) and D-fucose (10), respectively. The 5-epimerization by a Mitsunobu inversion of the open-chain D-hexoses was the key step for these routes. Furthermore, the conversion of 2 into peracetylated TDP-6-deoxy-α-L-altrose (3a) was achieved by the cycloSal approach. However, the final deacetylation led to an unexpected side-reaction resulting in the previously unknown 6-deoxy-α-L-altropyranose 1,3-cyclophosphate (4).
RCAI-61, the 6′-O-methylated analog of KRN7000: its synthesis and potent bioactivity for mouse lymphocytes to produce interferon-γ in vivo
Tashiro, Takuya,Nakagawa, Ryusuke,Inoue, Sayo,Shiozaki, Masao,Watarai, Hiroshi,Taniguchi, Masaru,Mori, Kenji
scheme or table, p. 6827 - 6830 (2009/04/14)
RCAI-61, the 6′-O-methylated analog of KRN7000, and six other analogs with modified 6′-position of the galactose moiety of KRN7000 were synthesized to examine their bioactivity for mouse lymphocytes. Methyl α-d-galactopyranoside was the starting material
Mirror-Image Carbohydrates: Synthesis of the Unnatural Enantiomer of a Blood Group Trisaccharide
Boulineau, Fabien P.,Wei, Alexander
, p. 3391 - 3399 (2007/10/03)
Methyl D-glucoside and D-glucose pentaacetate are transformed, respectively, into methyl α-O-glucuronide 3 and hydroxymethyl β-C-glucuronide 9, which undergo decarboxylative elimination efficiently to produce 4-deoxypentenoside 4 and L-glucal 10. These unsaturated pyranosides provide an expeditious entry into mirror-image oligosaccharides, as demonstrated in the synthesis of the unnatural enantiomer of the H-type II blood group determinant trisaccharide (D-Fuc-(α1-2)-L-Gal-(β 1-4)-L-GlcNAc-β-OMe). This work illustrates that D-glucose, a common starting material in the synthesis of naturally occurring carbohydrates, can also be used to prepare their mirror-image analogues.
In situ activating glycosylation of 6-deoxysugars: Synthesis of O- α-D- fucosyl(1→4)-O-α-D-fucosyl-(1→4)-O-α-D-quinovosyl-(1→4)-D-quinovose
Koto, Shinkiti,Kusunoki, Ami,Hirooka, Motoko
, p. 967 - 976 (2007/10/03)
The linear tetrasaccharide, α-D-fucopyranosyl-(1→4)-a-D-fucopyranosyl- (1→4)-α-D-quinovopyranosyl-(1→4)-D-quinovopyranose, the sugar cluster of asterosaponin A from the starfish, Asterias amurensis, was synthesized in a convergent manner. We employed an i