35 research outputs found
Square-planar rhodium(I) complexes with aromatic bent terdentate nitrogen ligands as candidates for rod-like extended materials
Isolated d-f pairs in supramolecular complexes with tunable structural and electronic properties
Connecting Terminal Carboxylate Groups in Nine-Coordinate Lanthanide Podates: Consequences on the Thermodynamic, Structural, Electronic, and Photophysical Properties
Programming heteropolymetallic lanthanide helicates: thermodynamic recognition of different metal ions along the strands
Total synthesis of the Amaryllidaceae alkaloid clivonine
Two syntheses of the Amaryllidaceae alkaloid clivonine (1) are described. Both employ previously reported 7-arylhydrindane 6 as an intermediate but differ in the method employed for subsequent introduction of what becomes the ring-B lactone carbonyl carbon (C7). The synthesis featuring a BischlerâNapieralski reaction for this transformation constitutes the first asymmetric synthesis of natural (+)-clivonine. Crystal structures for compounds (±)-13, (±)-16, (â)-20 and (±)-28 are also reported