6533b861fe1ef96bd12c4533

RESEARCH PRODUCT

Synthesis of plagiochiline N from santonin.

Begoña GarcíaLuisa LahozGonzalo BlayLuz CardonaJosé R. Pedro

subject

chemistry.chemical_classificationNatural productOzonolysisPlants MedicinalDouble bondDihydropyranStereochemistryAntinematodal AgentsOrganic ChemistryAlkenesRing (chemistry)chemistry.chemical_compoundchemistryMoietySantoninLactoneThiocyanatesSantonin

description

This article reports the transformation of O-acetylisophotosantonin, obtained by photochemical rearrangement of santonin, into plagiochiline N, an ent-2,3-secoaromadendrane isolated from Plagiochila ovalifolia. The synthesis was carried out in a sequence involving as the key steps (a) the substitution of the lactone moiety by a gem-dimethylcyclopropane ring through a synthetic intermediate having a C(6)-C(7) double bond and (b) the ozonolysis of the C(2)-C(3) bond followed by cyclization to the dihydropyran ring characteristic of plagiochiline N. Spectroscopic data of the synthetic product fully coincided with the reported data for the natural product.

10.1021/jo010567dhttps://pubmed.ncbi.nlm.nih.gov/11701024