[PDF] Top 20 Iniciación a las buenas prácticas alimenticias en Educación Primaria
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Preparation of Methyl 1,2,3,4-tetra-O-acetyl-B-D-glucopyranuronate.
... filtered through a sintered glass funnel into a flask. The solvent is removed on a rotary evaporator (40 °C, 20 mmHg) to reveal a sticky, brown oil mixed with solids. This residue is dissolved in hot (70 °C) EtOH (50 mL) ... See full document
12
2,3,4,6 Tetra O acetyl β D glucopyranosyl azide
... 1,2-trans--Glycosyl azides are versatile precursors for the synthesis of a wide range of glucosylamine derivatives. For example, glucosylamides can be prepared in very good yields and high anomeric equatorial ... See full document
10
5 Phenyl 1,3,4 dioxazol 2 yl 2,3,4,6 tetra O acetyl 1 thio D glucopyranoside
... 1,3,4-Oxadiazole-5-thiol (0.516 g, 3 mmol), -acetobromoglucose (1.230 g, 3 mmol) and KOH (0.168 g, 3 mmol) were reacted at room temperature for 12 h. The product was obtained by column chro- ... See full document
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Benzaldehyde 1 (2,3,4,6 tetra O acetyl β D galactopyranosyl)thiosemicarbazone
... O4 0.0499 (15) 0.078 (2) 0.123 (2) −0.0088 (15) 0.0291 (15) −0.0333 (19) O5 0.079 (2) 0.080 (2) 0.150 (3) −0.0252 (18) 0.042 (2) −0.045 (2) O6 0.0497 (16) 0.0609 (19) ... See full document
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Methyl 3,4,6 tri O acetyl 2 deoxy 2 azido α D galactopyranosyl (1→2) [3,4,6 tri O acetyl 2 deoxy 2 phthalimido β D glucopyranosyl (1→3)] 4 O benzoyl α L rhamnopyranoside n hexane 0 1 solvate
... O2 and O3 positions by an - and a -linked hexopyranosyl residue, respectively. The protecting groups may increase the steric crowding and it is of particluar interest to analyse the conformation at the glycosidic ... See full document
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Prop 2 ynyl 1,2,3,4 tetra O acetyl β D glucopyranuronate
... The molecular structure of (I) is shown in Fig. 1. The bond lengths and angles are within expected ranges for sugars. The six-membered ring exhibits the chair conformation expected for a glucopyranose, and all ... See full document
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2,3,4,6 Tetra O acetyl N (2 hydroxybenzylidene) β D galactopyranosylamine
... Data collection: X-AREA (Stoe & Cie, 2002); cell refinement: X-AREA; data reduction: X-RED32 (Stoe & Cie, 2002); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine ... See full document
13
1,2,3,4 Tetra O acetyl α D glucopyranuronamide
... 3H, Me), 2.20 (s, 3H, Me), 4.30 (d, 1H, J = 10.1 Hz, H-5), 5.09 (dd, 1H, J = 3.7, 10.1 Hz, H-2), 5.25 (t, 1H, J = 10 Hz, H-4), 5.54 (t, 1H, J = 10.0 Hz, H-3), 6.26 (br s, 1H, NH)*, 6.38 ... See full document
239
Isopropyl 2,3,4,6 tetra O acetyl β D glucopyranoside
... Data collection: APEX2 Bruker, 2001; cell refinement: SAINT Bruker, 2001; data reduction: SAINT; programs used to solve structure: SHELXS97 Sheldrick, 2008; programs used to refine struc[r] ... See full document
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2,5 Di O acetyl 3 C methyl D lyxono 1,4 lactone
... C-2 methyl group may be accessed either by a Kiliani reaction on 1-deoxyketoses or by treatment of an Amadori ketose with aqueous calcium hydroxide (Hotchkiss et ...a 3-C-methyl- ... See full document
7
5,6,7,9 Tetra O acetyl 4,8 anhydro 1,2,3 trideoxy D glycero D gulo non 1 enitol
... the O- glycoside analogs of these compounds in which the C3 methylene group is replaced with an O atom, ...the O-glycoside, this conformational feature is generally attrib- uted to a stereoelectronic ... See full document
22
(4R,5R) 2 (N Methyl benzylamino) 3 nitro 4 (1′,2′,3′,4′,5′ penta O acetyl D manno pentitol 1 yl) 5 phenyl 5 phenylcarbamoyl 4,5 dihydrothiophene at 150 K
... the same side with respect to the best plane through the di- hydrothiophene ring, at distances of 0.394 (3) and 1.715 (3) AÊ, respectively, and N3, N2 and C51 are on the opposite side, at distances of ... See full document
310
2,3,4,6 Tetra O acetyl O (p tert butylphenyl) β D glucopyranoside
... Due to the absence of significant anomalous dispersion effects, the absolute configuration was not determined in this analysis and Friedel pairs were merged. The absolute configuration presented in this paper has been ... See full document
138
Synthesis, Structure and Antioxidant Activity of (TetraO-acetyl-?-D-galactopyranosyl)thiosemicarbazones of Substituted Benzaldehydes
... coupling constant values, J H-1,H-2 = 9.0-9.5 Hz, for the pyranose ring agreed with trans-axial H-H disposition and confirmed the β-anomeric configuration of compounds 4a-m. Signals of NH protons of the ... See full document
7
4 N Acetylamino 5 [N acetyl N (tetra O acetyl β D glucopyranosyl)amino] 1,3 dimethyluracil
... (10) −0.0015 (9) O431 0.0372 (10) 0.0328 (10) 0.0234 (8) −0.0057 (8) 0.0064 (7) −0.0040 (7) C432 0.0443 (15) 0.0375 (15) 0.0370 (14) 0.0038 (13) 0.0185 (12) −0.0096 (12) C44 0.0218 (10) 0.0193 (11) 0.0191 (10) −0.0022 ... See full document
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Phenyl 2,3 di O acetyl 4 O (2 chloroacetyl) 6 O (2,3,4 tri O acetyl β D xylopyranosyl) 1 thio β D glucopyranoside
... Data collection: PROCESS-AUTO (Rigaku, 1998); cell refine- ment: PROCESS-AUTO; data reduction: CrystalStructure (Rigaku/ MSC, 2004); program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to ... See full document
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5 Acetyl 4 methyl 2 (o toluidinyl) 1,3 thiazole
... of o-toluidine ...of 3-chloroacetylacetone and ammonium thiocyanate in a two-necked round-bottomed ...5 d of evaporation (yield 80%, m.p. 442.8–442.1 K). 1 H NMR: ...aromatic, 2–5); 13 ... See full document
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1 (2,3,4,6 Tetra O acetyl β D glucopyranosyl) 3 thioureidothiourea monohydrate
... Compound (I) was prepared by refluxing together equimolar amounts of β-D-2,3,4,6-tetra-O- acetyl-glucopyranosyl iso- thiocyanate and thiosemicarbazide. After cooling to room temperature, water ... See full document
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4 (2,3,4,6 Tetra O acetyl β D galactopyranosyl)thiosemicarbazide
... the preparation of corresponding semicarbazides (Li et ...(2,3,4,6-tetra-O-acetyl-- d -xylopyranosyl)thiocarbamide (II) (Yang et ...(Fig. 1, Table ...The acetyl group at ... See full document
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4 Methoxyphenyl 2,3,4,6 tetra O acetyl β D galactopyranoside
... C16 0.066 (2) 0.057 (3) 0.065 (3) 0.005 (2) 0.034 (2) 0.012 (2) C17 0.062 (2) 0.059 (3) 0.070 (3) 0.008 (2) 0.030 (2) −0.003 (3) C18 ... See full document
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