Strychnos 1990 - 2004 - Crops for the Future
Strychnos 1990 - 2004 - Crops for the Future
Strychnos 1990 - 2004 - Crops for the Future
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Author<br />
Title<br />
Year<br />
Source title<br />
Reference<br />
Abstract<br />
Frederich, M., M. Tits, M. P. Hayette, V. Brandt, J. Penelle, P. DeMol, G. Llabres<br />
10'-hydroxyusambarensine, a new antimalarial bisindole alkaloid from <strong>the</strong> roots of<br />
1999<br />
Journal of Natural Products<br />
62(4): 619-621<br />
-<br />
Author<br />
Title<br />
Year<br />
Source title<br />
Reference<br />
Furlanetto, C. and J. C. Dianese<br />
Some Pseudocercospora species and a new Prathigada species from <strong>the</strong> Brazilian<br />
1999<br />
Mycological Research<br />
103(Sep): 1203-1209<br />
Abstract<br />
Pseudocercospora bolkanii sp. nov., and P. luzardii sp. nov., were collected in <strong>the</strong> Brazilian cerrado<br />
on leaves of <strong>Strychnos</strong> pseudoquina, and Hancornia speciosa, respectively. Prathigada backmanii sp.<br />
nov., is described on leaf spots of Bowdichia virgilioides. Pseudocercospora curatellae on Curatella<br />
a m e r i c a n a i s i l l u s t r a t e d i n d e t a i l .<br />
Author<br />
Title<br />
Year<br />
Source title<br />
Reference<br />
Hadden, C. E., B. D. Kaluzny, R. H. Robins and G. E. Martin<br />
Effects of n-oxidation on <strong>the</strong> n-15 chemical shifts in <strong>the</strong> strychnos alkaloids strych<br />
1999<br />
Magnetic Resonance in Chemistry<br />
37(4): 325-327<br />
Abstract<br />
The effects of N-oxidation on <strong>the</strong> N-15 chemical shifts of <strong>the</strong> <strong>Strychnos</strong> alkaloids strychnine and<br />
brucine are discussed. The N-15 shifts were determined using <strong>the</strong> inverse-detected, long-range<br />
GHMBC experiment at natural abundance. Following N-oxidation, <strong>the</strong> N-19 resonance shifted<br />
downfield from 35.0 ppm in strychnine to 136.3 ppm in <strong>the</strong> N-19-oxide. The N-19 resonance of<br />
brucine shifted downfield from 35.9 to 135.5 ppm in <strong>the</strong> N-19-oxide, Small upheld shifts were<br />
observed <strong>for</strong> <strong>the</strong> N-9 resonances of both N-oxides. The H-1 and C-13 shifts of both N-oxides were<br />
assigned using inverse-detected 2D NMR methods to ensure proper assignments of <strong>the</strong> long-range H-<br />
1-N-15 couplings. Copyright (C) 1999 John Wiley & Sons, Ltd.