New quinolizidine alkaloids from Ulex jussiaei.

  title={New quinolizidine alkaloids from Ulex jussiaei.},
  author={P. M{\'a}ximo and A. Lourenço},
  journal={Journal of natural products},
  volume={63 2},
From an acidic extract of Ulex jussiaei four new quinolizidine alkaloids, jussiaeiines A (1), B (2), C (3), and D (4), were isolated and characterized by spectroscopic methods together with (-)-cytisine, (-)-N-methylcytisine, and (-)-anagyrine. The proposed biosynthetic origin of these new alkaloids is briefly discussed. 
Chemotaxonomy of Portuguese Ulex: quinolizidine alkaloids as taxonomical markers.
Six species of Portuguese Ulex L. in a total of nineteen populations were studied by GC-EIMS as to their content in quinolizidine alkaloids, which allowed the definition of five chemotypes and the recognition of hybrids. Expand
Simple Indolizidine and Quinolizidine Alkaloids.
  • J. Michael
  • Biology, Medicine
  • The Alkaloids. Chemistry and biology
  • 2016
The present survey covers the literature from mid-1999 to the end of 2013; and in addition to aspects of the isolation, characterization, and biological activity of the alkaloids, much emphasis is placed on their total synthesis. Expand
Total synthesis of the lupin alkaloid cytisine: comparison of synthetic strategies and routes
The strategies and routes used to synthesise the lupin alkaloid cytisine are reviewed. <div class=" textboxdefault "> Figure options Download full-size image Download as PowerPoint slide
Efecto de extractos de Ulex europaeus L. en la producción de biomasa de plántulas de ají (Capsicum annuum L.), en condiciones de laboratorio
In high doses of Hm extract, an increase in GM was observed compared to control; but in DM, it was not; therefore, feasibility of using U. europaeus extracts to increase GM and DM production in C. annuum can be ensured. Expand
Effect of Ulex europaeus L. extracts on polyphenol concentration in Capsicum annuum L. and Lactuca sativa L.
Under laboratory conditions the polyphenol content rose with increasing extract doses in both species, but this tendency was not observed in the greenhouse, which opens up the possibility of cultivating species with higher antioxidant contents using natural products. Expand
Pyridines and their Benzo Derivatives: Applications
The applications of pyridines and their benzo derivatives, during the last decade are described together with natural products containing pyridine ring systems. The applications are classified intoExpand
New enantioselective method for hydration of alkenes using cyclodextrins as phase transfer catalyst
Abstract A new enantioselective/inverse phase transfer catalysis (IPTC) reaction for the Markovnikov hydration of double bounds by an oxymercuration–demercuration reaction with cyclodextrins asExpand
Formation of Completely or Partially Reduced Pyridines and Quinolines
Catalytic hydrogenation of pyridine and alkyl pyridines to the corresponding piperidines are well documented in the literature. Numerous publications showed that the catalytic hydrogenation ofExpand
Efecto de dos extractos botánicos en el desarrollo y contenido de polifenoles de ají (Capsicum annuum L.)* Effect of two botanical extracts in the development and content of polyphenol in chili pepper (Capsicum annuum L.)
Resumen La presencia de fitoquimicos de distinta naturaleza presente en extractos botanicos que impactan en la generacion de metabolitos primarios y secundarios (principalmente polifenoles) en losExpand