2,3-O-isopropylidene-alpha-D-lyxofuranose, monoacetone-D-lyxose of Levene and Tipson
نویسندگان
چکیده
منابع مشابه
Purification and Characterization of D-lyxose Isomerase.
The metabolism of n-lyxose by Aerobacter aerogenes PRL-R3 involves isomerization to u-xylulose followed by phosphorylation to n-xylulose 5-phosphate (1, 2). The enzyme which catalyzes the first reaction in the sequence, n-lyxose isomerase, is of interest because it initiates the degradation of an unnatural pentose in an organism which can utilize as a sole carbon source at least 7 of the 8 aldo...
متن کاملSurface-initiated atom-transfer radical polymerization of 3-O-methacryloyl-1,2:5,6-di- O-isopropylidene-alpha- D-glucofuranoside onto gold surface.
A sugar-containing polymer was grown on gold surface by surface-initiated atom-transfer radical polymerization (SI-ATRP) of methacrylate monomer, 3-O-methacryloyl-1,2:5,6-di-O-isopropylidene-alpha-D-glucofuranoside (MAIpGIc), using 1,4,8,11-tetraaza-1,4,8,11-tetramethylcyclotetradecane (Me(4)Cyclam) as ligand, 2-bromopropionyl moiety attached on the gold surface as initiator, and Copper(I) brom...
متن کاملO(d,d)-Covariant String Cosmology
The recently discovered O(d; d) symmetry of the space of (slowly-varying) cosmo-logical string vacua in d + 1 dimensions is shown to be preserved in the presence of bulk string matter. The existence of O(d; d) conserved currents allows all the equations of string cosmology to be reduced to rst-order diierential equations. The perfect-uid approximation is not invariant under O(d; d) transformati...
متن کاملVacuum Branes in D - Dimensional Static Spacetimes with Spatial Symmetry IO ( D − 2 ) , O ( D − 1 ) or O + ( D −
In this paper, we give a complete classification of vacuum branes, i.e., everywhere umbilical time-like hypersurfaces whose extrinsic curvature is a constant multiple of the induced metric, Kμν = σgμν , in D-dimensional static spacetimes with spatial symmetry G(D−2, K), where G(n,K) is the isometry group of an n-dimensional space with constant sectional curvature K. D ≥ 4 is assumed. It is show...
متن کاملDuality Symmetric Strings, Dilatons and O(d,d) Effective Actions
We calculate the background field equations for the T-duality symmetric string building on previous work by including the effect of the Dilaton up to two-loops. Inclusion of the Dilaton allows us to obtain the full beta functionals of the duality symmetric sigma model. We are able to interpret the result in terms of a dimensionally reduced O(d,d) invariant target space effective action. email: ...
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: Journal of Research of the National Bureau of Standards Section A: Physics and Chemistry
سال: 1961
ISSN: 0022-4332
DOI: 10.6028/jres.065a.054