Synthesis of O-beta-D-Galactopyranosyl-(1->3)-O-beta-D-galactopyranosyl-(1->4)-O-beta-D-xylopyranosyl-(1->3)-L-serine.
نویسندگان
چکیده
منابع مشابه
Utilization and metabolism of [U-14C]4' galactosyllactose (O-beta-D-galactopyranosyl-(1----4)-O-beta-D-galactopyranosyl-(1----4)- D-glucopyranose) in rats.
O-beta-D-Galactopyranosyl-(1----4)-O-beta-D-galactopyranosyl- (1----4)-D-glucopyranose (designated as 4'GL) are produced from lactose with Cryptococcus laurentii OKN-4. Excretion and metabolism of 4'GL in rats were examined using a radioisotope technique. [U-14c]4'GL was synthesized from [U-14C]lactose by Cryptococcus laurentii OKN-4. The 14CO2 in expired air was counted after oral administrati...
متن کاملDisorder and conformational analysis of methyl [beta]-d-galactopyranosyl-(1-->4)-[beta]-d-xylopyranoside
Methyl -d-galactopyranosyl-(1!4)-d-xylopyranoside, C12H22O10, (II), crystallizes as colorless needles from water with positional disorder in the xylopyranosyl (Xyl) ring and no water molecules in the unit cell. The internal glycosidic linkage conformation in (II) is characterized by a ’0 torsion angle (C2Gal—C1 0 Gal—O1 0 Gal—C4Xyl) of 156.4 (5) and a 0 torsion angle (C1Gal—O1 0 Gal—C4Xyl—C3Xyl...
متن کاملNuclear Magnetic Resonance and Molecular Modeling Studies on O-p- D-Galactopyranosyl-(1~4)-O-~-D-xylopyranosyl-(l~O)-L-serine, a Carbohydrate-Protein Linkage Region Fragment from Connective Tissue Proteoglycans*
The solution conformation of 0-&D-galactopyranosyl-(1~4)-O-j3-D-xylopyranosyl-(l~O)-L+3erine (GXS), a carbohydrate-protein linkage region fragment from connective tissue proteoglycans, was investigated by two-dimensional NMR spectroscopy and molecular modeling calculations. Specifically, the ‘H and 13C resonances were assigned by SD-COSY and by ‘H13C heteronuclear correlation spectroscopy metho...
متن کامل2-Acetamido-2-deoxy-3-O-β-d-galactopyranosyl-d-glucose dihydrate
In the title compound, C(14)H(25)NO(11)·2H(2)O, the primary hydroxyl group connected to the anomeric C atom of the N-acetyl-β-d-glucopyran-ose residue exhibits positional disorder, with occupancy factors for the α and β anomers of 0.77 and 0.23, respectively. The two torsion angles (Φ and Ψ) and the bridge angle (τ) that describe conformation of the glycosidic linkage between the galactopyran-o...
متن کاملCytotoxicity of 3-O-(beta-D-glucopyranosyl) etioline, a steroidal alkaloid from Solanum diphyllum L.
In continuation of our interest in phytochemical screening of the Egyptian flora for potential drugs, the reinvestigation of the methanolic extract of the roots of Solanum diphyllum, which grows naturally in the south of Egypt and is recorded as new to the Egyptian flora, afforded an interesting, highly cytotoxic compound, named 3-O-(beta-D-glucopyranosyl) etioline [(25S)-22,26-epimino-3beta-(b...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1979
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.33b-0449