Abstract
The biosynthetic orgins of the tetralone isoshinanolone and the related naphthoquinone plumbagin were investigated by feeding [13C2]-acetate to suspended callus cultures of Ancistrocladus heyneanus. The orientation of the acetate subunits was elucidated by a similar experiment using [2-13C]-acetate. The polyketide folding mode found for isoshinanolone and plumbagin constitutes a further hint at the acetogenic nature of the naphthylisoquinoline alkaloids, which are typical of A. heyneanus and other species of Ancistrocladaceae and Dioncophyllaceae.
The acetogenic origin and the polyketide folding mode of the naphthoquinone plumbagin (5) and the tetralone isoshinanolone (6) in Ancistrocladus heyneanus were established by feeding of differently 13C-labelled acetate and subsequent 13C NMR analysis.
The acetogenic origin and the polyketide folding mode of the naphthoquinone plumbagin (5) and the tetralone isoshinanolone (6) in Ancistrocladus heyneanus were established by feeding of differently 13C-labelled acetate and subsequent 13C NMR analysis.
Original language | English |
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Pages (from-to) | 8445-8448 |
Journal | Tetrahedron Letters |
Volume | 39 |
Issue number | 46 |
DOIs | |
Publication status | Published - 1998 |
MoE publication type | A1 Journal article-refereed |