diastereoisomer

(redirected from Diastereomer)
Also found in: Encyclopedia, Wikipedia.
Related to Diastereomer: anomer

diastereoisomer

(ˌdaɪəˌstɛrɪəʊˈaɪsəmə) or

diastereomer

n
(Chemistry) chem a type of isomer that differs in the spatial arrangement of atoms in the molecule, but is not a mirror image; a stereoisomer that is not an enantiomer
Translations
diastéréo-isomère
Mentioned in ?
References in periodicals archive ?
Causes of variability in concentrations and diastereomer patterns of hexabromocyclododecanes in indoor dust.
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.
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.
Moreover, during the oxidative work-up procedure in basic conditions the lactone ring may open and, together with the following relactonization, there is a risk of racemization of (1S, 5R, 6R)4a (the enantiopurity of the other diastereomer (1S, 5R, 6S)-4a is not affected).
11) The noteworthy features of the synthesis are: the hydroxyl and the carboxylic acid functions in the reactants do not require protection-deprotection chemistry; the C-C bond formation step provides useful syn-selectivity giving the desired diastereomer.
This past summer we worked on the synthesis of one diastereomer of this peptidomimetic.
In the so-called SS diastereomer, the dioxolane ring lies perpendicularly to the channel axis.
Each diastereomer was independently reacted with a second alkenyl anion which lead to the isolation of the same polycyclic compound after the cascade reaction took place.
The enantiomeric fractions (EFs) reported here are corrected using the responses of the isotopically labeled diastereomer standards as described elsewhere (Marvin et al.
The second step (Equation 3) could then be carried out without purification leading to a single diastereomer.
These levis are consistent with the ratios of HBCD found in a harbor porpoise and cormorant, where only [alpha]-HBCD was detected, [gamma]-HBCD is the prominent diastereomer in sediment, whereas [alpha]-HBCD is consistently the highest in biota, and [beta]-HBCD always appears to be a very minor component.