enantiomerically pure

enantiomerically pure

[ə¦nan·tē·ō¦mer·ə·klē ′pyür]
(organic chemistry)
Referring to a sample of molecules having the same chirality. IUPAC discourages use of homchiral as a synonym.
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The new strategy will be applied to develop proficient enzymes for the synthesis of enantiomerically pure -blocker drugs for treating cardiovascular problems at a reduced cost.
As is well known, discovery of the existence of enantiomeric isomers of organic compounds as well as their isolation as enantiomerically pure isomers with the use of tweezers under microscope were performed for the preparation of enantiomerically pure D-(-)- and L-(+)-tartaric acids as early as the mid-nineteenth century by L.
Later a new synthetic strategy was developed which involved the introduction of the chiral center in the very first step using an enantiomerically pure amino acid which led to the synthesis of enantiomerically pure quinazolinones nucleus.
The use of enantiomerically pure DOTAP Chloride shows enhanced adjuvant activity compared to the racemate.
Some specific processes described include chemoenzymatic routes to enantiomerically pure amino acids and amines, multi-enzyme systems for the synthesis of glycoconjugates, and microbial production of DNA building blocks.
In their March 2007 cover article in Angewandte Chemie International Edition 46 (2007), 2276, the U of A researchers show that using enantiomerically pure (R) propylene oxide, each of the 6 conformers is "frozen out" in their molecular beam and can be observed by their distinct rotational spectrum (see Figure 3).
Minneapolis, MN, has received an official "letter of no objection" from the FDA regarding the self-affirmed GRAS (generally recognized as safe) status of its enantiomerically pure L-theanine, marketed as Suntheanine, produced via a patented enzymatic fermentation method.
In addition, progress on the synthesis of enantiomerically pure chiral bromosilanes using tartrate-based, chiral N-bromosuccinimide derivatives will be presented.
have reportedly found a way to use enantiomerically pure chiral molecules to make polymers with optical properties four times as stable as the properties of polymers made with conventional precursors.
Thus, chiral drugs extracted from plants and animals are enantiomerically pure.
The study of stereoselectivity has evolved from issues of diastereoselectivity, through auxiliary-based methods for the synthesis of enantiomerically pure compounds (diastereoselectivity followed by separation and auxiliary cleavage), to asymmetric catalysis.
In this project, we propose to develop an industrially scalable, practical method for the synthesis of a-arylated quaternary amino acids in enantiomerically pure form by streamlining, optimization and scale-up of a reaction we discovered while working on the synthesis of quaternary amino acids as conformational controllers within an ERC-funded Advanced Grant.