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

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.

journal_name

Bioorg Med Chem

journal_title

Bioorganic & medicinal chemistry

authors

Reyes CP,Núñez MJ,Jiménez IA,Busserolles J,Alcaraz MJ,Bazzocchi IL

doi

10.1016/j.bmc.2005.10.063

subject

Has Abstract

pub_date

2006-03-01 00:00:00

pages

1573-9

issue

5

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(05)01072-2

journal_volume

14

pub_type

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