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[交流] 求翻译一小段，药学专业，英语译成汉语

The enantiomericpuritydeterminationofasyntheticintermediateofnew3,4-dihydro-2,2-dimethyl-2H-
1-benzopyrans, i.e.4-amino-2,2-dimethyl-6-ethoxycarbonylamino-3,4-dihydro-2H-1-benzopyran, was
successfully carriedoutusingananioniccyclodextrin(CD)derivativecombinedwithachiralionic
liquid (IL).Inordertoobtainhighresolutionandefficiencyvalues,theadditionofachiralIL,i.e.
ethylcholine bis(trifluoromethylsulfonyl)imide(EtCholNTf2), tothebackgroundelectrolytecontain-
ing heptakis(2,3-di-O-methyl-6-O-sulfo)--CD (HDMS--CD) wasfoundtobeessential.Asimultaneous
increase inseparationselectivityandenantioresolutionseemstoindicateasynergisticeffectofHDMS--
CD andEtCholNTf2. Thebestenantioseparationofthekeyintermediatewasachievedusingamethanolic
solution of0.75Mformicacid,10mMammoniumformate,1.5mMHDMS--CD and5mMEtCholNTf2.
Levamisole wasselectedasinternalstandard.Theoptimizedconditionsallowedthedeterminationof
0.1% ofeachenantiomerinthepresenceofitsstereoisomerusingthemethodofstandardadditions.The
NACE methodwasthenfullyvalidatedwithrespecttoselectivity,responsefunction,trueness,precision,accuracy, linearityandlimitsofdetectionandquantification.

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