diastereoisomer


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diastereoisomer

[¦dī·ə‚ster·ē·ō′ī·sə· mər]
(organic chemistry)
One of a pair of optical isomers which are not mirror images of each other. Also known as diastereomer.
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It is noteworthy that the majority diastereoisomer formed was the same in the case of the reaction catalyzed by TEBAC.
Efficient asymmetric synthesis of S'S-2-methylsulfanyl-2-methylsulfinyl-1-indanone
Importantly, until recently SAM-e's benefit was virtually unknown, due to it is extreme instability at temperatures above 0[degrees] C, or in the presence of moisture, "both as degradation of the active ingredient intended as the sum of the two diastereoisomers, and as transformation of active (SS)-(+)-S-adenosyl-L-methionine into inactivate (RS)-(+)-S-adenosyl-L-methionine (racemisation of the substance).
S-adenosyl-L-methionine (SAM-e) in combination with B-vitamins and amino acids
The Diels-Alder addition of PTAD to the exocyclic diene in 25OHD produced a pair of diastereoisomers (Fig.
Minimizing matrix effects for the accurate quantification of 25-hydroxyvitamin D metabolites in dried blood spots by LC-MS/MS
1]H NMR analysis indicated that the structure of the distinctive diastereoisomers obtained for 5 and 6 were trans-configured with respect to the 3-CH3/4-Ar substituents (Figure 2).
Sintesis y evaluacion in vitro de las propiedades antifungicas de algunos derivados de 4-aril-3-metil-1,2,3,4-tetrahidroquinolinas
Silybin makes up more than 50% of silymarin and is made up of a mixture of two diastereoisomers, silybin A and silybin B.
Silybum marianum monograph
Determination of hexabromocyclododecane diastereoisomers in Sargassum fusiforme and comparison of the extraction efficiency of ultrasonication, microwave-assisted extraction, Soxhlet extraction and pressurised liquid extraction," Journal of Separation Science, vol.
Advances in instrumental analysis of brominated flame retardants: current status and future perspectives
catechu; these are diastereoisomers of the 5,7,3',4'-tetrahydroxyflavan-3-ol structure (Figs.
Potential of tannins for exterior grade plywood
Silymarin consists of at least seven flavonolignans, of which the most prevalent are the diastereoisomers silybin A and silybin B; silibinin consists only of silybin A and silybin B.
Silymarin
We were not able to separate the isomers present in the pheromone volatiles collected from females or synthetic stereoisomers with 2 different chiral columns because the enantiomers of branched aliphatic hydrocarbons do not possess a functional group that permits derivatized into diastereoisomers that could be separated by chromatographic methods or by spectroscopic techniques such as Nuclear Magnetic Resonance (Meierhenrich et al.
Chemical analysis of female volatiles and field response of the coffee leafminer moth (lepidoptera: lyonetiidae) to stereoisomers of its major sex pheromone component
The hydroboration of 7a (diastereomeric mixture) resulted in 6- and 7-hydroxy methylacetals 8a and 9a, as a sum of 8 regio- and diastereoisomers (ratio of 8a and 9a was 4 : 1), and also 4% of the corresponding 6(S)-hydroxylactol 10.
Synthesis of substituted cyclopentanones from 2-oxabicyclo[3.3.0]oct-6-en-3-one/Asendatud tsuklopentanoonide suntees 2-oksabitsuklo[3.3.0]okta-6-een-3-oonist
However, this enzyme, termed organophosphorus acid anhydrolase (OPAA), hydrolyzes the relatively non-toxic pair of diastereoisomers, C([not equal to])P(+), more rapidly than the toxic pair C([+ or -])P(-) (1).
Substituted Cyclodextrin as a Model for a Squid Enzyme that Hydrolyzes the Nerve Gas Soman

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