Examples of 'diastereoisomer' in a sentence
Meaning of "diastereoisomer"
Diastereoisomer is a noun that refers to a type of stereoisomer which are molecules that have two or more stereocenters and are not mirror images of each other
Show more definitions
- A stereoisomer having multiple chiral centres; a diastereoisomer cannot normally be superimposed on the mirror image of another.
How to use "diastereoisomer" in a sentence
Basic
Advanced
diastereoisomer
Suitably the more active diastereoisomer is selected.
The pure diastereoisomer is isolated at the benzamide stage.
On concentration each separate diastereoisomer yielded a white solid.
It is a diastereoisomer of alphacetylmethadol as well as levacetylmethadol.
And its enantiomers or diastereoisomer thereof.
Preferably said diastereoisomer separation is performed vía chromatography or crystallization.
A racemic form and two enantiomers correspond to each diastereoisomer.
Preferably said diastereoisomer separation is performed vía chromatography.
The procedure is identical to that used for its diastereoisomer.
The trans diastereoisomer is the first in the order of elution.
Preferably it is one pure diastereoisomer.
The cis diastereoisomer is the second in the order of elution.
These compounds are generally obtained in the form of diastereoisomer mixtures.
The cis diastereoisomer is the first in the order of elution.
Optically pure tosylates lead to essentially only one diastereoisomer.
See also
The preponderant diastereoisomer is isolated.
Diastereoisomer prepared enzymatically.
They therefore exist in the racemic mixture form or in diastereoisomer forms.
The trans diastereoisomer is the second in the order of elution.
The desired enantiomer is subsequently regenerated from the appropriate diastereoisomer.
The pure trans diastereoisomer was obtained by crystallization using diisopropylether.
It is filtered off and the mother liquors essentially containing the opposite diastereoisomer are removed.
The individual diastereoisomer can be purified by means of fractional recrystallization or chromatography.
A molecule having several chiral centers thus has several diastereoisomer and enantiomer forms.
These diastereoisomer mixtures are used without further purification in the following stage.
In some cases only the faster running diastereoisomer was taken through to the final product.
Each diastereoisomer exists in the form of two RMN conformers.
The crude product was purified by HPLC to afford the desired product as a single diastereoisomer.
The desired diastereoisomer can be released from its salt in basic medium.
Analysis by TLC revealed that the reaction was essentially complete to the desired threo diastereoisomer.
The appropriate diastereoisomer can then be cleaved into the desired enantiomer.
NMR assignment for the major diastereoisomer.
Or a diastereoisomer thereof.
HPLC showed a single diastereoisomer.
An epimer is a diastereoisomer that has the opposite configuration at only one of the stereocenters.
The composition of the compound may be mixed RP and SP or one pure diastereoisomer.
The diastereoisomer mixture obtained is separated by HPLC.
Example 7 was obtained as the later eluting diastereoisomer.
The less polar diastereoisomer migrates faster in chromatography and is referred to as A.
This is and amorphous product, which is a diastereoisomer mixture.
The diastereoisomer A was transformed into the hydrochloride in the same way.
The present invention includes each diastereoisomer of compounds of formula I and mixtures thereof.
Diastereoisomer B refers to a mixture of compounds having syn configuration as defined above.
The present invention includes each diastereoisomer of compounds of formula I or II and mixtures thereof.
Diastereoisomer A refers to a mixture of compounds having anti configuration as defined above.
The present invention includes each diastereoisomer of compounds of formula I and III and mixtures thereof.
Diastereoisomer A or diastereoisomer B refer to a mixture of two diastereoisomers whose absolute stereochemistry was not characterised.
Upon cooling, one of the diastereoisomer tartrate salts precipitates.
According to a usual work-up a crude lactol was obtained as a diastereoisomer mixture.
The other diastereoisomer is separated out,.
