摘要:
The invention relates to a compound corresponding to general formula (I) wherein n is a whole number from 1-6, m is a whole number equal to 5, 6 or 7, R1 is an OH group, all R1 s are identical, Z is an NHX group, X is a hydrogen atom, and R is a hydrogen atom or a bioidentification element, with the proviso that the compound wherein n=1, m=6, Z=NH2 and R1=OH is excluded.
摘要:
The invention relates to a cyclodextrin derivative corresponding to general formula (I) wherein n is a whole number from 1-6, m is a whole number equal to 5, 6 or 7, R1 is an OH group, all R1s are identical, Z is a thiourea group, X is a hydrogen atom, and R is a hydrogen atom or a bioidentification element.
摘要:
The invention relates to a compound corresponding to general formula (I) wherein n is a whole number from 1-6, m is a whole number equal to 5, 6 or 7, R1 is an OH group, all R1s are identical, Z is an NHX group, X is a hydrogen atom, and R is a hydrogen atom or a bioidentification element, with the proviso that the compound wherein n=1, m=6, Z=NH2 and R1=OH is excluded.
摘要:
The invention relates to a compound according to the following general formula (I), in which: m represents an integer equal to 5, 6 or 7; n and n1 represent an integer from 1 to 5; the A groups represent, in particular, a hydrogenated atom; X represents O or S; Y represents, in particular, a group NR1, R1, representing, in particular, a hydrogenated atom; W represents CH or N; and Z represents, in particular, a hydrogenated atom.
摘要:
The invention relates to thioureido-cyclodextrins, usable in particular to solubilize anti-tumor and antiparasitic agents and their preparation processes.These thioureido-cyclodextrins correspond to the formula: ##STR1## with m=6, 7 or 8, R.sup.1 represents OH or NH--CS--NHR.sup.2, at least one of the R.sup.1 being NH--CS--NHR.sup.2,R.sup.2 represents an alkyl, monosaccharide, oligosaccharide glycosyl-amino acid or glycopeptide group.These cyclodextrins are usable for solubilizing anti-tumor or antiparasitic agents of the Taxol family.
摘要:
The invention relates to a compound according to the following general formula (I), in which: m represents an integer equal to 5, 6 or 7; n and n1 represent an integer from 1 to 5; the A groups represent, in particular, a hydrogenated atom; X represents O or S; Y represents, in particular, a group NR1, R1, representing, in particular, a hydrogenated atom; W represents CH or N; and Z represents, in particular, a hydrogenated atom.
摘要:
The present invention relates to cyclodextrins having the following formula (I): to nanostructures comprising them, to processes for preparing them, to the use thereof, and also to compositions comprising them.
摘要:
An amphoteric starch containing carboxyl and cationic groups characterized in that its carboxyl groups originate from the selective oxidation of the hemiacetal groups of the cationic starch and possibly of the hemiacetal groups of its products of acid hydrolysis. The process for producing the amphoteric starch consists in reacting a cationic starch in aqueous solution with hydrogen peroxide and hydrobromic acid or bromine, so as to oxidize selectively the hemiacetal groups of the cationic starch and, where appropriate, the hemiacetal groups of its products of acid hydrolysis, to give carboxyl groups.
摘要:
The invention concerns a process for dehydrating glucides and applicable to those glucides of which the molecule includes at least one ketose type group, being characterized in that the glucide is made to react without addition of water with a hydrogen halide, whereupon the hydrogen halide is eliminated by evaporation in order to collect the formed disaccharide anhydride.The invention also relates to novel products characterized by essentially consisting of saccharide anhydrides of which the molecule includes two saccharide cycles linked to each other by two acetal bonds included in a dioxane cycle. As a rule at least one of the saccharide cycles is that of fructose (and may be substituted), and this cycle is linked by a spirane bond to the dioxane cycle.Product application as food additives.
摘要:
The invention concerns a process for dehydrating glucides and applicable to those glucides of which the molecule includes at least one ketose type group, being characterized in that the glucide is made to react without addition of water with a hydrogen halide, whereupon the hydrogen halide is eliminated by evaporation in order to collect the formed disaccharide anhydride.The invention also relates to novel products characterized by essentially consisting of saccharide anhydrides of which the molecule includes two saccharide cycles linked to each other by two acetal bonds included in a dioxane cycle. As a rule at least one of the saccharide cycles is that of fructose (and may be substituted), and this cycle is linked by a spirane bond to the dioxane cycle.Product application as food additives.