diastereomer


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Related to diastereomer: anomer

diastereomer

[¦dī·ə¦ster·ē′ō·mər]
(organic chemistry)
References in periodicals archive ?
Spatial diastereomer patterns of hexabromocyclododecane (HBCD) in a Norwegian fjord.
Surprisingly, after oxidation 17% of 6(S)-hydroxy compound 6(S)-8a was recovered, pointing to the preferable oxidation of 6(R) diastereomer of 8a (Scheme 5).
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%.
In a nice twist, chiral, optically pure oxazolines on the periphery of the thiophenes control the self-assembly to give dimers of only one helical chirality, and this helical chirality controls the photodimerization to give essentially only one diastereomer (see opposite).
5mTHF contains two asyininetric carbon atoms, and the physiologic form of 5mTHF is the optically active [6S,[alpha]S] 5mTHF diastereomer (also referred to as t-5mTHF).
The four stereoisomers can be grouped into two pairs of enantiomers, resulting in two diastereomers (RR + SS and RS + SR).
Therefore, we assume that the 2 closely eluting substances (M17 and M20) are diastereomers of 2'-hydroxy-XLR-11 glucuronide, whereas the third compound eluting at 9.
It is ideal for structurally similar compounds including chiral entities, diastereomers, enantiomers, positional isomers and structural analogs.
Other subjects covered include synthesis and electronic properties of assemblies of diastereomers of nickel II complexes with tetracyanometalates, synthesis of functionalized pyrazoles, stereochemical aspects of interaction between some monosaccharides and l-alpha-amino acids in aqueous solutions, and challenges in carbohydrate chemistry.
As a result, a new chiral center is formed, and in respect to the given chirality in the backbone, the two possible N-configurations result in two possible diastereomers.