The pyrrolizidine alkaloids of Senecio syringifolius and S. hadiensis from Kenya
β Scribed by Obuya Were; Michael Benn; Raphael M. Munavu
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 750 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0031-9422
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π SIMILAR VOLUMES
A method for the determination of the pyrrolizidine alkaloids from Seneciojucobueu (Compositae) by 'H and I3C NMR is presented. 'H NMR is a reliable method for the determination of the total alkaloid level. I3C NMR appears to be a suitable method for the determination of the individual alkaloids. Th
Senecio v u l a r i s , a p l a n t c o n t a i n i n g 3 m a c r o f q c l i c p y r r o i z i d i n e a l k a l m A \* r o w n under atmospheric COZY CO , and 1JC02 c o n d i t i o n s . c o n d i t i o n s t h e p l a n t s were s u b j e c t e d t o and t h e amounts o f macrocyclic PAS i s o l
## Abstract The new pyrrolizidine alkaloid glycoside **1**, and the three new highly oxygenated bisabolane sesquiterpenes **4**β**6**, together with the two known pyrrolizidine alkaloids **2** and **3**, were isolated from the roots of __Ligularia cymbulifera__ (W.β W. Smith) Hand.βMazz. Their struc