diastereomer


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Related to diastereomer: anomer

diastereomer

[¦dī·ə¦ster·ē′ō·mər]
(organic chemistry)
References in periodicals archive ?
Covaci, "Causes of variability in concentrations and diastereomer patterns of hexabromocyclododecanes in indoor dust," Environment International, vol.
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).
ochroleuca, the diastereomer mixture of lamoxirenes 1 and 3 had no higher biological activity in sperm release than lamoxirene 1 alone (Table 4, A c ompared with B and C).
80) By using the synthetic materials, Chuman's group found that (4S,6S,7R)-21, a diastereomer of serricornin, could work as an antagonist of the pheromone action, (81) while anhydroserricornin was not a strong attractant.
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%.
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.
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).