WO1998054356A1 - PROCEDIMIENTO DE OBTENCION DE β-D-GALACTOPIRANOSIL-XILOSAS UTILIZABLES PARA LA EVALUACION DIAGNOSTICA DE LA LACTASA INTESTINAL - Google Patents
PROCEDIMIENTO DE OBTENCION DE β-D-GALACTOPIRANOSIL-XILOSAS UTILIZABLES PARA LA EVALUACION DIAGNOSTICA DE LA LACTASA INTESTINAL Download PDFInfo
- Publication number
- WO1998054356A1 WO1998054356A1 PCT/ES1998/000138 ES9800138W WO9854356A1 WO 1998054356 A1 WO1998054356 A1 WO 1998054356A1 ES 9800138 W ES9800138 W ES 9800138W WO 9854356 A1 WO9854356 A1 WO 9854356A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- galactopyranosyl
- xyloses
- obtaining
- usable
- diagnostic evaluation
- Prior art date
Links
- 108010005774 beta-Galactosidase Proteins 0.000 title claims abstract description 49
- 102100026189 Beta-galactosidase Human genes 0.000 title claims abstract description 40
- 108010059881 Lactase Proteins 0.000 title claims abstract description 37
- 230000000968 intestinal effect Effects 0.000 title claims abstract description 36
- 229940116108 lactase Drugs 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000007435 diagnostic evaluation Methods 0.000 title claims abstract description 22
- 108090000790 Enzymes Proteins 0.000 claims abstract description 21
- 102000004190 Enzymes Human genes 0.000 claims abstract description 21
- 229940088598 enzyme Drugs 0.000 claims abstract description 21
- 150000002016 disaccharides Chemical class 0.000 claims description 39
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 claims description 20
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 13
- 101000874334 Dalbergia nigrescens Isoflavonoid 7-O-beta-apiosyl-glucoside beta-glycosidase Proteins 0.000 claims description 10
- 101000757733 Enterococcus faecalis (strain ATCC 700802 / V583) Autolysin Proteins 0.000 claims description 10
- 101000757734 Mycolicibacterium phlei 38 kDa autolysin Proteins 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000008101 lactose Substances 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 claims description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 6
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- KUWPCJHYPSUOFW-YBXAARCKSA-N 2-nitrophenyl beta-D-galactoside Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1[N+]([O-])=O KUWPCJHYPSUOFW-YBXAARCKSA-N 0.000 claims description 5
- 240000006439 Aspergillus oryzae Species 0.000 claims description 5
- 235000002247 Aspergillus oryzae Nutrition 0.000 claims description 5
- 241000283690 Bos taurus Species 0.000 claims description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 241000588724 Escherichia coli Species 0.000 claims description 3
- 235000018368 Saccharomyces fragilis Nutrition 0.000 claims description 3
- 244000253911 Saccharomyces fragilis Species 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 210000001550 testis Anatomy 0.000 claims description 3
- 210000002700 urine Anatomy 0.000 claims description 3
- WFIYPADYPQQLNN-UHFFFAOYSA-N 2-[2-(4-bromopyrazol-1-yl)ethyl]isoindole-1,3-dione Chemical compound C1=C(Br)C=NN1CCN1C(=O)C2=CC=CC=C2C1=O WFIYPADYPQQLNN-UHFFFAOYSA-N 0.000 claims description 2
- 230000007812 deficiency Effects 0.000 claims description 2
- 239000003480 eluent Substances 0.000 claims description 2
- 238000004108 freeze drying Methods 0.000 claims description 2
- 238000007710 freezing Methods 0.000 claims description 2
- 230000008014 freezing Effects 0.000 claims description 2
- 210000004185 liver Anatomy 0.000 claims description 2
- 238000004809 thin layer chromatography Methods 0.000 claims description 2
- 230000002255 enzymatic effect Effects 0.000 claims 16
- 230000009849 deactivation Effects 0.000 claims 3
- CWRWJDAEKWYUJT-CGKXPTHNSA-N 1-(9S,13S,12-oxophytodienoyl)-2-(7Z,10Z,13Z)-hexadecatrienoyl-3-(beta-D-galactosyl)-sn-glycerol Chemical compound C([C@H](OC(=O)CCCCC\C=C/C\C=C/C\C=C/CC)COC(=O)CCCCCCC[C@@H]1[C@@H](C(=O)C=C1)C\C=C/CC)O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O CWRWJDAEKWYUJT-CGKXPTHNSA-N 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 239000012736 aqueous medium Substances 0.000 claims 1
- 239000006184 cosolvent Substances 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 9
- 102000005936 beta-Galactosidase Human genes 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 6
- PYMYPHUHKUWMLA-WISUUJSJSA-N aldehydo-L-xylose Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)C=O PYMYPHUHKUWMLA-WISUUJSJSA-N 0.000 description 6
- 229930195726 aldehydo-L-xylose Natural products 0.000 description 6
- WQZGKKKJIJFFOK-SVZMEOIVSA-N (+)-Galactose Chemical compound OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-SVZMEOIVSA-N 0.000 description 4
- ZTTRCZJSZGZSTB-GDIDZOIGSA-N (2r,3s,4r)-2,4,5-trihydroxy-3-[(2s,3r,4s,5r,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxypentanal Chemical compound OC[C@@H](O)[C@@H]([C@@H](O)C=O)O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O ZTTRCZJSZGZSTB-GDIDZOIGSA-N 0.000 description 3
- AXHPKHDTOXXPGU-IGXVCFLBSA-N (2r,3s,4r)-3,4,5-trihydroxy-2-[(2s,3r,4s,5r,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxypentanal Chemical compound OC[C@@H](O)[C@H](O)[C@H](C=O)O[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O AXHPKHDTOXXPGU-IGXVCFLBSA-N 0.000 description 3
- AXHPKHDTOXXPGU-UHFFFAOYSA-N 2-O-beta-D-galactopyranosyl-D-xylose Natural products OCC(O)C(O)C(C=O)OC1OC(CO)C(O)C(O)C1O AXHPKHDTOXXPGU-UHFFFAOYSA-N 0.000 description 3
- VEXXNWQUANSCBT-UHFFFAOYSA-N 4-O-beta-D-Galactopyranosyl-D-xylose Natural products OC1C(O)C(CO)OC1OC1C(CO)OC(O)C(O)C1O VEXXNWQUANSCBT-UHFFFAOYSA-N 0.000 description 3
- VCTBNHVCBSUQPG-MRRNQDDQSA-N 4-o-β-d-galactopyranosyl-d-xylose Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H](O)OC1 VCTBNHVCBSUQPG-MRRNQDDQSA-N 0.000 description 3
- 235000019687 Lamb Nutrition 0.000 description 3
- ZTTRCZJSZGZSTB-UHFFFAOYSA-N O3-beta-D-Galactopyranosyl-L-arabinose Natural products OCC(O)C(C(O)C=O)OC1OC(CO)C(O)C(O)C1O ZTTRCZJSZGZSTB-UHFFFAOYSA-N 0.000 description 3
- BYZQBCIYLALLPA-UHFFFAOYSA-N O4-beta-D-Galactopyranosyl-D-xylose Natural products O=CC(O)C(O)C(CO)OC1OC(CO)C(O)C(O)C1O BYZQBCIYLALLPA-UHFFFAOYSA-N 0.000 description 3
- 229930182830 galactose Natural products 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- -1 o-nitrophenyl galactoside Chemical class 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 3
- GUBGYTABKSRVRQ-XLOQQCSPSA-N Alpha-Lactose Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@H](O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-XLOQQCSPSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-PHYPRBDBSA-N alpha-D-galactose Chemical compound OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-PHYPRBDBSA-N 0.000 description 2
- 238000004737 colorimetric analysis Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 210000000936 intestine Anatomy 0.000 description 2
- 150000002772 monosaccharides Chemical class 0.000 description 2
- 239000012429 reaction media Substances 0.000 description 2
- OMJDHGNQFHAGNZ-LTEQSDMASA-N (2S,3R,4S,5R,6R)-2-[(2R,3R,4R,5R)-5,6-dihydroxy-2-(hydroxymethyl)-4-methoxyoxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound CO[C@@H]1[C@H](C(O)O[C@@H]([C@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@H](O1)CO)CO)O OMJDHGNQFHAGNZ-LTEQSDMASA-N 0.000 description 1
- 0 *OC(C(C1O)O)OC(CO)[C@@]1O Chemical compound *OC(C(C1O)O)OC(CO)[C@@]1O 0.000 description 1
- RMTFNDVZYPHUEF-XZBKPIIZSA-N 3-O-methyl-D-glucose Chemical compound O=C[C@H](O)[C@@H](OC)[C@H](O)[C@H](O)CO RMTFNDVZYPHUEF-XZBKPIIZSA-N 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 206010012735 Diarrhoea Diseases 0.000 description 1
- 101900264058 Escherichia coli Beta-galactosidase Proteins 0.000 description 1
- 108010093031 Galactosidases Proteins 0.000 description 1
- 102000002464 Galactosidases Human genes 0.000 description 1
- 208000012895 Gastric disease Diseases 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 150000001158 L-xyloses Chemical class 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 125000001488 beta-D-galactosyl group Chemical group C1([C@H](O)[C@@H](O)[C@@H](O)[C@H](O1)CO)* 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012631 diagnostic technique Methods 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 206010016766 flatulence Diseases 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000003367 kinetic assay Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011894 semi-preparative HPLC Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000006227 trimethylsilylation reaction Methods 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 125000000969 xylosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)CO1)* 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
- C07H3/00—Compounds containing only hydrogen atoms and saccharide radicals having only carbon, hydrogen, and oxygen atoms
- C07H3/04—Disaccharides
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/12—Disaccharides
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/34—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving hydrolase
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/90—Enzymes; Proenzymes
- G01N2333/914—Hydrolases (3)
- G01N2333/924—Hydrolases (3) acting on glycosyl compounds (3.2)
Definitions
- Intestinal lactase is the enzyme responsible for hydrolyzing lactose ingested in the diet into its monosaccharide components, glucose and galactose, so that they are absorbed from the intestine and metabolized.
- Deficiency or low activity in intestinal lactase is rare as a congenital metabolic error, but it is a very common syndrome in adult humans.
- milk consumption causes the appearance of gastric disorders such as flatus and diarrhea. Therefore, the determination of intestinal lactase activity is of importance in both pediatrics and gastroenterology.
- Spanish patent ES-P-9502185 describes a simplified process for obtaining compound I together with the 2-O- ⁇ -D-galactopyranosyl-D-xylose regioisomers of formula II and 3-O- ⁇ -D-galactopyranosyl-D- Xylose of formula III.
- This patent claims the use of ⁇ -D-galactopyranosyl-D-xyloses I, II, and III, for the diagnostic evaluation of intestinal lactase, and it is observed that the disaccharides of formulas II and III are better substrates of intestinal lactase than the compound of formula I and that 3-O-meti I-lactose, although the latter are structurally more similar to lactose.
- the process for obtaining compounds I, II and III according to patent ES-P-9502185 is carried out by the reaction of a D-xylose and a ⁇ -D-galactopyranoside substrate in the presence of a ⁇ -galactosidase enzyme, preferably the E. coli ⁇ -galactosidase, according to the reaction scheme
- the present invention aims to improve the process described in Spanish patent ES-P-9502185, by obtaining reactions with high proportions of disaccharides II and III, better substrates of intestinal lactase than I, using enzymes from different sources.
- the preparation, using the same procedure, of analog disaccharides containing a xylose residue of the L series is also described and claimed: the 2-O- ⁇ -D-galactopyranosyl-L-xylose compounds (formula IV), 3- O- ⁇ -D-galactopyranosyl-L-xylose (formula V) and 4-O- ⁇ -D-galactopyranosyl-L-xylose (formula VI).
- IV, V, and VI are substrates of the intestinal lactase enzyme, leading after hydrolysis to D-galactose and L-xylose, the latter detectable by colorimetry. Therefore, compounds IV, V, VI are potentially usable in the diagnostic evaluation of intestinal lactase.
- the process for obtaining the ⁇ -D-galactopyranosyl-D- and L-xyloses (compounds I-VI) disaccharides is carried out from D-xylose or L-xylose and a ⁇ -D-galactopyranoside substrate, preferably or -nitrophenyl ⁇ -D-galactopyranoside or lactose, in the presence of a ⁇ -glycosidase enzyme.
- the concentration of xylose is between 2 and 20 times the concentration of the donor ⁇ -D galactopyranosyl substrate.
- the reaction medium is buffered water at pH 5.0 to 9.0, in the presence or absence of water miscible solvents such as acetonitrile, dimethylformamide or dimethylsulfoxide.
- the reaction temperature can be any within the range 4 to 37 ° C, the progress being monitored by thin layer chromatography or gas chromatography.
- the reaction can be stopped by freezing at -70 ° C and subsequent lyophilization, or by denaturing the enzyme by heating the reaction mixture at 100 ° C or by separating and recovering the enzyme of the reaction medium by ultrafiltration techniques.
- the isolation of the disaccharides formed can be done either by filtration column with Sephadex G-10 or Biogel P2, or, more economically, with an active carbon column.
- the eluent may be water or water-alcohol mixtures.
- the ratio of disaccharides 1— III and IV-VI obtained from the chromatographic column was determined by gas chromatography with a chromatograph equipped with flame ionization detector and SE-54 capillary column (15 m long, 0.15mm internal diameter and 0.3 mm thick). A nitrogen flow of 1 mL / min was used in the analyzes.
- the temperature program used was: initial temperature 160 ° C; initial time 2 min; temperature rise 5 ° C / min; final temperature 250 ° C.
- the samples were analyzed after trimethylsilylation by the following protocol: an aliquot (10 ml) was frozen and lyophilized, pyridine (25 mL) was added to the dry residue, which contained as an internal reference benzyl xylopyranoside (1 mM) and til / -thmethylsilylimidazole (25 mL), and heating was continued at 60 ° C for 30 min.
- the retention times of the peaks assignable to the different disaccharides were the following: benzyl xylopyranoside (internal reference): 13.39 min.
- Example 1 Preparation of a mixture of 4-O- ⁇ -D-galactopyranosyl-D-xylose (disaccharide I), 2-O- ⁇ -D-galactopyranosyl-D-xylose (disaccharide II) and 3-O- ⁇ - D- galactopyranosyl-D-xylose (disaccharide III)
- o-nitrophenyl ⁇ -D-galactopyranoside (1g, 32mM
- D-xylose 5g, 320mM
- buffered water 26mM acetic acid, 100mM pyridine, pH 5.8
- Sigma Aspergillus oryzae ⁇ -galactosidase 8.3 mg, 5.3 u / mg
- Example 2 Preparation of a mixture of 2-O- ⁇ -D-galactopyranosyl-L-xylose (disaccharide IV), 3-O- ⁇ -D-galactopyranoses N-L-xylose (disaccharide V) and 4-O- ⁇ - D- galactopyranosyl-L-xylose (disaccharide VI)
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Genetics & Genomics (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Biochemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biophysics (AREA)
- Immunology (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU72173/98A AU7217398A (en) | 1997-05-28 | 1998-05-14 | Process for obtaining beta-d-galactopyranosyl-xyloses usable for the diagnostic evaluation of intestinal lactase |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9701156A ES2130073B1 (es) | 1997-05-28 | 1997-05-28 | Mejoras en el procedimiento de obtencion de beta-d-galactopiranosil-xilosas utilizables para la evaluacion diagnostica de la lactasa intestinal. |
ESP9701156 | 1997-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998054356A1 true WO1998054356A1 (es) | 1998-12-03 |
Family
ID=8299475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES1998/000138 WO1998054356A1 (es) | 1997-05-28 | 1998-05-14 | PROCEDIMIENTO DE OBTENCION DE β-D-GALACTOPIRANOSIL-XILOSAS UTILIZABLES PARA LA EVALUACION DIAGNOSTICA DE LA LACTASA INTESTINAL |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU7217398A (es) |
ES (1) | ES2130073B1 (es) |
WO (1) | WO1998054356A1 (es) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2182703B1 (es) * | 2001-06-18 | 2004-06-01 | Consejo Superior De Investigaciones Cientificas | Un procedimiento enzimatico para obtener 4-0-b-d-galactopiranosil-d-xilosa, 4-o-b-d-galactopiranosil-d-xilosa obtenida de acuerdo con el pr cedimiento, composiciones que la contienen y su uso en la evaluacion de la lactasa intestinal. |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2023556A6 (es) * | 1990-06-18 | 1992-01-16 | Consejo Superior Investigacion | Procedimiento de obtencion de 4-o-beta-d-galactopiranosil-d-xilosa utilizable para la evaluacion diagnostica de la lactasa intestinal. |
WO1997017464A1 (es) * | 1995-11-08 | 1997-05-15 | Consejo Superior Investigactiones Cientificas | USO DE β-D-GALACTOPIRANOSIL-D-XILOSAS PARA LA PREPARACION DE COMPOSICIONES Y DISOLUCIONES DESTINADAS A LA EVALUACION DE LA LACTASA INTESTINAL, Y PROCEDIMIENTO PARA SU OBTENCION |
-
1997
- 1997-05-28 ES ES9701156A patent/ES2130073B1/es not_active Expired - Fee Related
-
1998
- 1998-05-14 WO PCT/ES1998/000138 patent/WO1998054356A1/es active Application Filing
- 1998-05-14 AU AU72173/98A patent/AU7217398A/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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ES2023556A6 (es) * | 1990-06-18 | 1992-01-16 | Consejo Superior Investigacion | Procedimiento de obtencion de 4-o-beta-d-galactopiranosil-d-xilosa utilizable para la evaluacion diagnostica de la lactasa intestinal. |
WO1997017464A1 (es) * | 1995-11-08 | 1997-05-15 | Consejo Superior Investigactiones Cientificas | USO DE β-D-GALACTOPIRANOSIL-D-XILOSAS PARA LA PREPARACION DE COMPOSICIONES Y DISOLUCIONES DESTINADAS A LA EVALUACION DE LA LACTASA INTESTINAL, Y PROCEDIMIENTO PARA SU OBTENCION |
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GORIN P.A.J. ET AL.: "The synthesis of beta-galacto- and beta-gluco-pyranosyl disaccarides by Sporobolomyces singularis", CANADIAN JOURNAL OF CHEMISTRY,, vol. 42, no. 10, October 1964 (1964-10-01), OTTAWA CA,, pages 2307 - 2317 * |
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ES2130073B1 (es) | 2000-04-01 |
ES2130073A1 (es) | 1999-06-16 |
AU7217398A (en) | 1998-12-30 |
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