Method for producing L-fucose includes in a first aspect, a method for the preparation of L-fucose, wherein L-fucose precursors are produced from pectin and L-fucose is produced from the L-fucose precursors; in a second aspect, a method for the preparation of L-fucose from D-galacturonic acid or a salt thereof, wherein L-fucose precursors are produced from D-galacturonic acid of a salt thereof, and L-fucose is produced from the L-fucose precursors; and an L-fucose precursor as shown in Formula A, wherein R is a linear or branched chain saturated hydrocarbon group with 1-6 carbon atoms, such as methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, s-butyl, t-butyl, n-hexyl, etc., preferably a methyl group.
[EN] SYNTHESIS OF ALDONOLACTONES, ALDAROLACTONES, AND ALDARODILACTONES USING GAS SPARGING<br/>[FR] SYNTHÈSE DES ALDONOLACTONES, ALDAROLACTONES ET ALDARODILACTONES AVEC EXTRACTION PAR LE GAZ
申请人:DU PONT
公开号:WO2006005070A1
公开(公告)日:2006-01-12
Aldaric acids, aldonic acids, and their corresponding salts are cyclized to the corresponding lactone or dilactone using gas sparging to remove water.
[EN] INTERMEDIATES FOR THE PREPARATION OF HALICHONDRIN B<br/>[FR] INTERMEDIAIRES POUR LA PREPARATION D'HALICHONDRINE B
申请人:EISAI CO LTD
公开号:WO2005118565A1
公开(公告)日:2005-12-15
The present invention provides macrocyclic compounds, synthesis of the same and intermediates thereto. Such compounds, and compositions thereof, are useful for treating or preventing proliferative disorders Formula (F-4).
Intermediates for the preparation of analogs of Halichondrin B
申请人:Eisai R&D Management Co., Ltd.
公开号:US07982060B2
公开(公告)日:2011-07-19
The present invention provides macrocyclic compounds, synthesis of the same and intermediates thereto. Such compounds, and compositions thereof, are useful for treating or preventing proliferative disorders Formula (F-4).