6533b835fe1ef96bd129f63c
RESEARCH PRODUCT
A surprising switch in absolute configuration of anti-inflammatory macrolactones.
Thorsten WalterDieter SchollmeyerTill OpatzMarkus RohrGerhard ErkelKarin Rahn-hotzeJohannes Taubersubject
Models MolecularMacrocyclic CompoundsStereochemistryAnti-Inflammatory AgentsMolecular ConformationStereoisomerism010402 general chemistryRing (chemistry)Crystallography X-Ray01 natural sciencesBiochemistryStereocenterchemistry.chemical_compoundHumansPhysical and Theoretical ChemistryNatural product010405 organic chemistryChemistryOrganic ChemistryAbsolute configurationTotal synthesisStereoisomerismCurvularinHep G2 Cells0104 chemical sciencesEnantiomerdescription
Oxacyclododecindione-type macrolactones exhibit highly potent anti-inflammatory activities even at nanomolar concentration. After the determination of the relative configuration of the stereocenters at C14 and C15 by total synthesis of 4-dechloro-14-deoxyoxacyclododecindione and 14-deoxyoxacyclododecindione, the absolute configuration has now been assigned by X-ray crystallography. Surprisingly, the absolute configuration is (14S,15R) which differs for C15 from that of the well-known derivatives of (S)-curvularin. The biological activities of both enantiomers of 14-deoxyoxacyclododecindione, obtained by racemic synthesis and optical resolution, were investigated and the ring conformation of the natural product was compared to that of (S)-curvularin and (R)-dehydrocurvularin.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-04-02 | Organicbiomolecular chemistry |