Lexithromycinisanearlysemi-syntheticerythromycin,preparedbyreactionofthe9-ketomoietytomethyloxime.ThestructuralchangeimprovesthepHst
lityprofileandhydrophobicityoflexithromycinforbetterinvivoabsorption.Thissamerationalewasusedtogreatereffectwithroxithromycinand,asaresult,lexithromycinwasquicklysupersededandhasnotbeennotextensivelystudied.Likeallerythromycins,lexithromycinshowsbroadspectrumantibacterialactivity.
Lexithromycinissolubleinethanol,methanol,DMForDMSO.Goodwatersolubility.
CASNumber
53066-26-5
MolecularFormula
C38H70N2O13
MolecularWeight
763.0
MechanismofAction
Likeallerythromycins,lexithromycinactsbybindingtothe30Sand50Sribosomalsub-units,blockingproteinsynthesis.
StorageConditions
-20°C