2. Academic Validation
  3. Activity of lupane triterpenoids from Maytenus species as inhibitors of nitric oxide and prostaglandin E2

Activity of lupane triterpenoids from Maytenus species as inhibitors of nitric oxide and prostaglandin E2

  • Bioorg Med Chem. 2006 Mar 1;14(5):1573-9. doi: 10.1016/j.bmc.2005.10.063.
Carolina P Reyes 1,  Marvin J Núñez,  Ignacio A Jiménez,  Jérôme Busserolles,  María J Alcaraz,  Isabel L Bazzocchi
Affiliations

Affiliation

  • 1 Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna and Instituto Canario de Investigación del Cáncer, Tenerife, Canary Islands, Spain.
PMID: 16337130 DOI: 10.1016/j.bmc.2005.10.063
Abstract

In the present study, we report that three new lupane Triterpenes (1-3), in addition to 16 known ones (4-19), were isolated from the root bark of Maytenus cuzcoina and the leaves of Maytenus chiapensis. Their structures were elucidated by spectral analysis, including homonuclear and heteronuclear correlation NMR experiments (COSY, ROESY, HSQC, and HMBC). The natural compounds and derivatives 6a, 6b, 9a, and 9b have been tested for potential anti-inflammatory activity, and several compounds including 3-epicalenduladiol (2), 11alpha-hydroxy-glochidone (3), rigidenol (6), acetoxy-rigidenol (6a), 11alpha-acetoxy-30-chloro-3-oxo-lup-20(29)-ene (6b), betulin (9), 28-acetoxy-betulin (9a), epibetulin (12), epibetulinic acid (13), and betulonic acid (16) exhibited potent inhibitory effects on NO and prostaglandin E(2) production in mouse macrophages (RAW 264.7) stimulated with Bacterial endotoxin. The structure-activity relationship is discussed in detail.

Figures
Products