REVISED STRUCTURE OF HAEMOVENTOSIN

Authors
RYCROFT DS CONNOLLY JD HUNECK S HIMMELREICH U
Citation
Ds. Rycroft et al., REVISED STRUCTURE OF HAEMOVENTOSIN, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 50(10), 1995, pp. 1557-1563
Citations number
15
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
50
Issue
10
Year of publication
1995
Pages
1557 - 1563
Database
ISI
SICI code
0932-0776(1995)50:10<1557:RSOH>2.0.ZU;2-5
Abstract
The structure of the lichen pigment haemoventosin has been revised to oxy-3S-methyl-1,6,9-trioxo-1H-naphtho-[2,3-c]pyran (3), mainly on the basis of long-range delta(C)/delta(H) correlations observed in 2D HMBC NMR experiments and long-range delta(H)/delta(D) isotope effects obse rved in partial deuteriation experiments with 10-O-acetylhaemoventosin ; ortho- and para-quinonoid structures were distinguished by means of the transacetylation inferred in the sodium dithionite reduction of 10 -O-acetylhaemoventosin.