Abstract: The invention relates to a method for labeling specifically living bacteria, comprising the steps of: a) incubating said bacteria of said sample with at least one modified monosaccharide compound comprising a first reactive chemical group capable to chemically react with a second reactive group, so that a residue bearing said first reactive group is incorporated into the envelope of such bacteria, and b) contacting said modified monosaccharide residue incorporated within the envelope of the bacteria with a labeling molecule comprising a said second reactive group, for generating the chemical reaction of said first reactive group with said second reactive group, characterized in that said modified monosaccharide compound has the following formula (I), or a salt thereof: Wherein —A, B and C can be independently H, OH, NH2, OH and NH2 being substituted or not by protecting groups thereof and —D is an alkyl chain in C2 to C4, each carbon being substituted or not by OH or NH2, OH and NH2 being substituted or not b

Abstract: The invention relates to a method for labeling specifically living microorganisms in a sample comprising microorganisms, the method comprising the steps of: a) incubating said microorganisms of said sample with at least one modified monosaccharide compound comprising a first reactive chemical group capable to chemically react with a second reactive group, so that a residue bearing said first reactive group is incorporated into such microorganisms, and b) contacting said residue incorporated in the microorganisms, with a labeling molecule comprising a said second reactive group, for generating the chemical reaction of said first reactive group of said residue incorporated within said living microorganisms with said second reactive group of said labeling molecule, resulting in a covalent link, characterized in that the said modified monosaccharide compound has the following formula (I?), or a salt thereof: —X can be O, NH or S, preferably O and NH, and —R1 and R2 can be independently H, OH, NH2, OH and NH2 bein

Abstract: Disclosed are new compounds of formulae: Wherein: R1 and R2 can be independently H; a C1 to C6 alkyl including methyl, ethyl, propyl, butyl; aryl including phenyl, para-methoxyphenyl; or R1,R2 together with the carbon C-6 can be a cyclopentylidene or cyclohexylidene; each of these groups being substituted or not; and R3 can be a C1 to C6 alkyl including methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl; or aryl including phenyl, methylphenyl, ethylphenyl, each of these groups being substituted or not. The invention also relates to their method of manufacture and their use for the synthesis of Ara-N3, Kdo-N3 and 4eKdo-N3.

Abstract: The present invention concerns a method for labeling specifically living bacteria of a given category of bacteria in a sample comprising bacteria, the method comprising the steps of: a) incubating said bacteria of said sample with at least one analog of a monosaccharide compound, said monosaccharide being an endogenous monosaccharide residue of glycans of the outer membrane of such given category of bacteria, the said endogenous monosaccharide residue comprising an ulosonic acid or ulosonate salt residue, the said analog of a monosaccharide compound being a modified monosaccharide substituted at a given position by a first reactive chemical group capable to react with a second reactive group of a labeling molecule, the said given position being preferably a position which comprises a free group in the said endogenous monosaccharide residue incorporated within said glycans of the outer membrane of the bacteria, b) contacting said bacteria with a said labeling molecule comprising a said second reactive group

Abstract: Disclosed is a method of preparation of 6-azido-2,4-diacetamido-2,4,6-trideoxy-D-mannose. This method includes the chemical reaction of compound of formula X: Wherein: R1 can be a C1 to C6 alkyl including methyl, ethyl, isopropyl; aryl including phenyl; each of these groups being substituted or not; and R2 can be a C1 to C6 alkyl including methyl, ethyl, isopropyl, tert-butyl, isobutyl; each of these groups being substituted or not; with a deprotecting reagent including a Lewis or Brönsted acid in a polar aprotic solvent, thereby obtaining a free C-1 OH group. The method can also start with the preparation from commercially available D-galactose pentaacetate, D-galactose tetraacetate or tetraacetyl D-galactosyl trichloroacetimidate. The step of deprotecting the anomeric position avoids the use of cerium and allows the easy purification of 6-azido-2,4-diacetamido-2,4,6-trideoxy-D-mannose.

Abstract: A kit for labeling bacteria, the kit including: an analog of an endogenous monosaccharide residue of glycans of the outer membrane of a given category of bacteria, the endogenous monosaccharide residue being an ulosonic acid or ulosonate salt residue, the analog of a monosaccharide compound being a modified monosaccharide substituted at a given position by a first reactive group capable of reacting with a second reactive group of a labeling molecule; the labeling molecule having the second reactive group capable of reacting with said first reactive group; reactants for generating the reaction of the first reactive group of the analog residue incorporated within the glycans of the outer membrane of the bacteria with the second reactive group of the labeling molecule; and a culture or incubation medium allowing growth of the given category of bacteria, specific to the growth of the given category of bacteria.

Abstract: Disclosed are new compounds of formulae: Wherein: R1 and R2 can be independently H; a C1 to C6 alkyl including methyl, ethyl, propyl, butyl; aryl including phenyl, para-methoxyphenyl; or R1,R2 together with the carbon C-6 can be a cyclopentylidene or cyclohexylidene; each of these groups being substituted or not; and R3 can be a C1 to C6 alkyl including methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl; or aryl including phenyl, methylphenyl, ethylphenyl, each of these groups being substituted or not. The invention also relates to their method of manufacture and their use for the synthesis of Ara-N3, Kdo-N3 and 4eKdo-N3.

Abstract: Disclosed is a method of preparation of 6-azido-2,4-diacetamido-2,4,6-trideoxy-D-mannose. This method includes the chemical reaction of compound of formula X: Wherein: R1 can be a C1 to C6 alkyl including methyl, ethyl, isopropyl; aryl including phenyl; each of these groups being substituted or not; and R2 can be a C1 to C6 alkyl including methyl, ethyl, isopropyl, tert-butyl, isobutyl; each of these groups being substituted or not; with a deprotecting reagent including a Lewis or Brönsted acid in a polar aprotic solvent, thereby obtaining a free C-1 OH group. The method can also start with the preparation from commercially available D-galactose pentaacetate, D-galactose tetraacetate or tetraacetyl D-galactosyl trichloroacetimidate. The step of deprotecting the anomeric position avoids the use of cerium and allows the easy purification of 6-azido-2,4-diacetamido-2,4,6-trideoxy-D-mannose.

Abstract: The invention relates to a method for labeling specifically living bacteria of a given category of Gram negative bacteria in a sample comprising bacteria, the method including the steps of: a) incubating the bacteria of the sample with at least one modified monosaccharide compound having a first reactive chemical group capable of reacting with a second reactive group, so that a monosaccharide residue bearing the first reactive group is incorporated into the polysaccharides of the outer membrane of such bacteria, and b) contacting the modified monosaccharide residue incorporated within the outer membrane of the bacteria, with a labeling molecule having a second reactive group.

Abstract: The invention relates to a method for labeling specifically living microorganisms in a sample comprising microorganisms, the method comprising the steps of: a) incubating said microorganisms of said sample with at least one modified monosaccharide compound comprising a first reactive chemical group capable to chemically react with a second reactive group, so that a residue bearing said first reactive group is incorporated into such microorganisms, and b) contacting said residue incorporated in the microorganisms, with a labeling molecule comprising a said second reactive group, for generating the chemical reaction of said first reactive group of said residue incorporated within said living microorganisms with said second reactive group of said labeling molecule, resulting in a covalent link, characterized in that the said modified monosaccharide compound has the following formula (I?), or a salt thereof: —X can be O, NH or S, preferably O and NH, and —R1 and R2 can be independently H, OH, NH2, OH and NH2 bein

Abstract: The invention relates to a method for labeling specifically living bacteria, comprising the steps of: a) incubating said bacteria of said sample with at least one modified monosaccharide compound comprising a first reactive chemical group capable to chemically react with a second reactive group, so that a residue bearing said first reactive group is incorporated into the envelope of such bacteria, and b) contacting said modified monosaccharide residue incorporated within the envelope of the bacteria, with a labeling molecule comprising a said second reactive group, for generating the chemical reaction of said first reactive group with said second reactive group, characterized in that said modified monosaccharide compound has the following formula (I), or a salt thereof: Wherein A, B and C can be independently H, OH, NH2, OH and NH2 being substituted or not by protecting groups thereof, and D is an alkyl chain in C2 to C4, each carbon being substituted or not by OH or NH2, OH and NH2 being substituted or not b

Abstract: A kit for labeling bacteria, the kit including: an analog of an endogenous monosaccharide residue of glycans of the outer membrane of a given category of bacteria, the endogenous monosaccharide residue being an ulosonic acid or ulosonate salt residue, the analog of a monosaccharide compound being a modified monosaccharide substituted at a given position by a first reactive group capable of reacting with a second reactive group of a labeling molecule; the labeling molecule having the second reactive group capable of reacting with said first reactive group; reactants for generating the reaction of the first reactive group of the analog residue incorporated within the glycans of the outer membrane of the bacteria with the second reactive group of the labeling molecule; and a culture or incubation medium allowing growth of the given category of bacteria, specific to the growth of the given category of bacteria.

Abstract: The present invention concerns a method for labeling specifically living bacteria of a given category in a sample, the method including: a) incubating said bacteria of said sample with at least one analog of a monosaccharide compound, and b) contacting the bacteria with a labeling molecule having a second reactive group.

Abstract: The invention relates to a method for labeling specifically living bacteria of a given category of Gram negative bacteria in a sample comprising bacteria, the method including the steps of: a) incubating the bacteria of the sample with at least one modified monosaccharide compound having a first reactive chemical group capable of reacting with a second reactive group, so that a monosaccharide residue bearing the first reactive group is incorporated into the polysaccharides of the outer membrane of such bacteria, and b) contacting the modified monosaccharide residue incorporated within the outer membrane of the bacteria, with a labeling molecule having a second reactive group.

Abstract: The present invention relates to compounds of formula (I): A-T-Z??(I) in which: the group A is a bipyridine group capable of complexing at least one metal element; the group T is a triazole group directly bound to the group A; and the group Z is a halogen atom, a nitro group, a cyano group, an alkyl group, an aryl group, a heterocyclic group, a group of formula —NR1R2, a group of formula —SR1, a group of formula —S(?O)2(OR1), a group of formula —O—S(?O)2(OR1), a group of formula —O—S(?O)2(R1), a group of formula —S(?O)(OR1), a group of formula —S(?O)(R1), a group of formula —S(?O)2R1, a group of formula —PR1R2, a group of formula —P(?O)(OR1)(OR2), a group of formula —O—P(?O)(OR1)(OR2), a group of formula —O—P(?O)(OR1)(R2), a group of formula —OR1 or a group of formula —CO—R1.

Abstract: The present invention concerns a method for labeling specifically living bacteria of a given category in a sample, the method including: a) incubating said bacteria of said sample with at least one analog of a monosaccharide compound, and b) contacting the bacteria with a labeling molecule having a second reactive group.

Abstract: The invention relates to compounds fitting the following formula (I): A-T-Z ??(I) wherein: A is a group capable of being complexing at least one metal element, selected from pyridine, bipyridine, phenanthroline or phthalocyanine groups; T is a triazole group directly bound to group A; Z is a halogen atom, a nitro group, a cyano group, an alkyl group, an aryl group, a heterocyclic group, a group of formula —NR1R2, a group of formula —SR1, a group of formula —S(?O)2(OR1), a group of formula —O—S(?O)2(OR1), a group of formula —O—S(?O)2(R1), a group of formula —S(?O) (OR1), a group of formula —S(?O) (R1), a group of formula —S(?O)2R1, a group of formula —PR1R2, a group of formula —P(?O) (OR1) (OR2) , a group of formula —O—P (?O) (OR1) (OR2), a group of formula —O—P(?O) (OR1) (R2), a group of formula —OR1or a group of formula —CO—R1, and R2, independently represent a hydrogen atom, an alkyl group or an aryl group, said alkyl or aryl groups being optionally substituted.

Abstract: The present invention relates to synthetic compounds that are active on plants, especially as legume nodulation factors, and also as plant growth stimulators, and to methods for preparing such compounds, which are of formula (I).

Abstract: The present invention relates to synthetic compounds that are active on plants, especially as legume nodulation factors, and also as plant growth stimulators, and to methods for preparing such compounds, which are of formula (I).

Abstract: The present invention relates to synthetic compounds that are active on plants, especially as legume nodulation factors, and also as plant growth stimulators, and to methods for preparing such compounds, which are of formula (I).