diastereomer

Related to diastereomer: anomer

diastereomer

[¦dī·ə¦ster·ē′ō·mər]

(organic chemistry)

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References in periodicals archive ?

When we examined the TBECH diastereomer binding activities, we found that 50:50 TBECH-[gamma][delta] binds to the AR with 22% of DHT's binding affinity, whereas for 50:50 TBECH-[alpha][beta] we found a relative binding affinity (RBA) of 6%.

Diastereomers of the brominated flame retardant 1,2-dibromo-4-(1,2 dibromoethyl)cyclohexane induce androgen receptor activation in the HepG2 hepatocellular carcinoma cell line and the LNCaP prostate cancer cell line

Determination of flame retardant hexabromocyclododecane diastereomers in textiles.

Exposure to hexabromocyclododecanes (HBCDs) via dust ingestion, but not diet, correlates with concentrations in human serum: preliminary results

This difference in affinity may have been attributable to a stereoselectivity bias from the FBP toward the unnatural diastereomer of the racemic 5mTHF.

Issues in immunoassay standardization: the ARCHITECT folate model for intermethod harmonization

The stability of the derivatives was tested by regression analysis in which the absolute peak areas of each diastereomer of AM and MA at each concentration were plotted vs injection time.

Drug testing in blood: validated negative-ion chemical ionization gas chromatographic-mass spectrometric assay for determination of amphetamine and methamphetamine enantiomers and its application to toxicology cases

A solution of the diastereomer (6.81 g, 0.005 M) in a minimum amount of water was added to potassium chloride (0.52 g, 0.005 M) with vigorous stirring.

Syntheses, Characterization, Resolution, and Biological Studies of Coordination Compounds of Aspartic Acid and Glycine

Residue was purified by column chromatography (silica gel, EtOAc/C[H.sub.3]OH 1: 4) affording product 2i (one diastereomer) as a white solid (40 mg, 31%; mp > 240[degrees]C).

Thio-[beta]-D-glucosides: synthesis and evaluation as glycosidase inhibitors and activators

The major diastereomer 7a upon treatment with Bocanhydride and TEA in DCM using catalytic amount of DMAP at 0[degrees]C to rt produced carbamate 8 with 79% yield.

Stereoselective synthesis of (+)-[alpha]-Conhydrine from R-(+)-glyceraldehyde

It is known that silymarin elicited partial ER activation and silybin B were probably responsible for a majority of the weak ER-mediated activities of silymarin, whereas, its diastereomer, silybin A, was found to be inactive [173].

Pharmacological overview of galactogogues

Covaci, "Causes of variability in concentrations and diastereomer patterns of hexabromocyclododecanes in indoor dust," Environment International, vol.

Advances in instrumental analysis of brominated flame retardants: current status and future perspectives

Spatial diastereomer patterns of hexabromocyclododecane (HBCD) in a Norwegian fjord.

Hexabromocyclododecane (HBCD) stereoisomers in U.S. food from Dallas, Texas

Of all the forms, the studies of its threo diastereomer revealed that d-threo isomer has been found to be more active and also showed significant metabolic difference than l-threo enantiomer.

Validated HPLC method for the determination of enantiomeric excess d-threo-Ritalinic acid by liquid chromatography

Since this reaction introduces two chiral carbons into the product, the cis alkenes are known to form a racemic mixture, and the trans isomer forms a stereospecific meso diastereomer. According to the literature (Mathai et al., 1956), addition of bromine to maleic acid in chloroform solvent occurs in the dark at room temperature but takes several days.

Bromination of dimethyl maleate using bromoform as catalyst under different energy sources: a case study for its role in biotransformations

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