6087-40-7Relevant articles and documents
Ferric chloride, an anomerization catalyst for the preparation of alkyl α-glycopyranosides
Ikemoto, Norihiro,Kim, Oak Kyung,Lo, Lee-Chiang,Satyanarayana, Vunnam,Chang, Mayland,Nakanishi, Koji
, p. 4295 - 4298 (1992)
Anhydrous FeCl3 in CH2Cl2 has been found to readily anomerize β-glycopyranosides to their corresponding α-anomers in good yields and selectivities at room temperatures. Acetyl- and benzoyl-protected oxygen sugars yielded the best results.
STRAIGHTFORWARD HOMOCHIRAL SYNTHESIS OF THE LACTONE MOIETY OF MEVINIC ACIDS
France, Christopher J.,McFarlane, Ian M.,Newton, Christopher G.,Pitchen, Philippe,Webster, Michael
, p. 1635 - 1638 (1993)
A new straightforward synthesis of the common lactone moiety of mevinic acids is described starting form tri-O-acetyl-D-glucal 2.The key diastereoselective O-glycosidation of 2 with methanol and subsequent methanolysis and tritylation are incorporated in
TMSBr-mediated solvent- and work-up-free synthesis of α-2-deoxyglycosides from glycals
Hsu, Mei-Yuan,Liu, Yi-Pei,Lam, Sarah,Lin, Su-Ching,Wang, Cheng-Chung
supporting information, p. 1758 - 1764 (2016/10/05)
The thio-additions of glycals were efficiently promoted by a stoichiometric amount of trimethylsilyl bromide (TMSBr) to produce S-2-deoxyglycosides under solvent-free conditions in good to excellent yields. In addition, with triphenylphosphine oxide as an additive, the TMSBr-mediated direct glycosylations of glycals with a large range of alcohols were highly α-selective.
Ferrier rearrangement and 2-deoxy sugar synthesis from d-glycals mediated by layered α-zirconium sulfophenylphosphonate-methanphosphonate as heterogeneous catalyst
Rosati, Ornelio,Curini, Massimo,Messina, Federica,Marcotullio, Maria Carla,Cravotto, Giancarlo
, p. 169 - 175 (2013/03/13)
Layered α-zirconium sulfophenylphosphonate-methanphosphonate is a solid acid catalyst that catalyzes Ferrier rearrangement from d-glycals and alcoholic nucleophiles under mild reaction conditions in short time and good yields. Notably, the combination of α-zirconium sulfophenylphosphonate- methanphosphonate and lithium bromide change the regioselectivity of this process affording 2-deoxy sugars in good yields. Graphical Abstract: [Figure not available: see fulltext.]
A chiron approach to (-)-tetrahydrolipstatin
Yadav,Vishweshwar Rao,Prasad
, p. 3888 - 3894 (2008/02/09)
An efficient chiron approach to the total synthesis of (-)- tetrahydrolipstatin is described. The main features of the synthetic strategy, which starts from tri-O-acetyl-D-glucal, are copper-mediated C-C bond formation, Frater alkylation, and Barton-McCombie deoxygenation. Georg Thieme Verlag Stuttgart.
Synthetic studies on antascomicin A: Construction of the C18-C34 fragment
Fuwa, Haruhiko,Okamura, Yumiko,Natsugari, Hideaki
, p. 5341 - 5352 (2007/10/03)
Stereoselective synthesis of the C18-C34 fragment of antascomicin A is described. Construction of the C27-C34 carbocycle moiety was achieved via catalytic Ferrier carbocylization and Johnson-Claisen rearrangement, which was converted to iodide 2 by use of
Synthesis of a-ring synthon of 19-nor-1alpha,25-dihydroxyvitamin D3 from (D)-glucose
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Page 5-6, (2010/02/07)
The present invention provides a method for the synthesis of an A-ring synthon phosphine oxide used in the preparation of 19-nor vitamin D compounds, and to novel synthetic intermediates formed during the synthesis. The new method prepares the phosphine oxide from (D)-glucose.
Novel synthesis of 2-substituted 19-norvitamin D A-ring phosphine oxide from D-glucose as a building block
Shimizu, Masato,Iwasaki, Yukiko,Shibamoto, Yoshinori,Sato, Miki,DeLuca,Yamada, Sachiko
, p. 809 - 812 (2007/10/03)
19-Norvitamin D A-ring phosphine oxide 5 was synthesized by a new sequence mode starting from D-glucose as a chiral template. Transformation of the pyranoside ring into the A-ring carbocycle was achieved by the Pd-catalyzed Ferrier rearrangement. The phosphine oxide 5 was obtained in an 18% overall yield by this novel cost-effective method.