6533b7cffe1ef96bd1259107

RESEARCH PRODUCT

Stereoselective Synthesis of (+)-11βH,13-Dihydroestafiatin, (+)-11βH,13-Dihydroludartin, (−)-Compressanolide, and (−)-11βH,13-Dihydromicheliolide from Santonin

Begoña GarcíaVictoria BarguesLuz CardonaJosé R. PedroGonzalo Blay

subject

StereochemistryPharmaceutical ScienceChemical synthesisCatalysisAnalytical ChemistryLactoneschemistry.chemical_compoundHydrogenolysisDrug DiscoveryChemoselectivityNuclear Magnetic Resonance BiomolecularBond cleavageSantoninPharmacologychemistry.chemical_classificationMolecular StructureChemistryOrganic ChemistryRegioselectivityStereoisomerismComplementary and alternative medicineCyclizationMolecular MedicineStereoselectivitySantoninLactone

description

Starting from 2 and 3, obtained from santonin (1), we have synthesized natural guaianolides 4-7. Chemoselective epoxidation of 2 gave (+)-11betaH,13-dihydroestafiatin (4), and epoxidation of 3 followed by regioselective elimination of the hydroxyl group afforded (+)-11betaH,13-dihydroludartin (5). Sharpless' mild regioselective ring-opening of 4 and 5 followed by hydrogenolysis yielded (-)-compressanolide (6) and (-)-11betaH,13-dihydromicheliolide (7), respectively.

yearjournalcountryeditionlanguage
2002-11-26Journal of Natural Products
https://doi.org/10.1021/np020109f