Nigel W. Preston

Aristoserratenine and tasmanine: structures and absolute configurations

Abstract The structure of the Aristorelia alkaloid aristoserratenine ( 1 ) has been determined by spectroscopic means, and confirmed by rearrangement to aristoteline ( 2 ). The structure of tasmanine ( 3 ) has been confirmed similarly, and the configuration at the spiro carbon of each base has been determined by nOe experiments.

Aristotelinone and serratoline: New indole alkaloids from Aristotelia serrata W.R.B. Oliver

Abstract Aristotelinone and serratoline, two new Aristotelia alkaloids, are shown to have indole and indolenine structures respectively from their spectra and reduction products.

Alkaloids ofAgastachys odorata

The Tasmanian endemic proteaceous plant Agastachys odorata contains the known alkaloid (-)-6β-acetoxy-3α-tigloyloxytropane, and 3α-(p-hydroxybenzoyloxy)trop-6-ene, the first naturally occurring tropene base.

Aristofruticosine, a novel indole alkaloid from Aristotelia Fruticosa

The isolation and structural determination of aristofruticosine (1), an alkaloid with a unique 3-azatricyclo[3.3.1.03,7]nonane nucleus, is described.

Synthesis and X-ray crystal structure of fruticosonine, a novel indole alkaloid from a New Zealand Aristotelia sp. (elaeocarpaceae)

The structure of fruticosonine, a new type of indole alkaloid from A. fruticosa, has been determined by X-ray crystallography and by synthesis.

Aristoteline, a novel indole alkaloid: X-ray structural determination

X-Ray crystallography shows that aristoteline, the main alkaloid of the New Zealand plant Aristotelia serrata, has the novel indole structure (I).