Pentacyclic triterpenes and steroids from the stem bark of uchi (Sacoglottis uchi, Humiriaceae)-Reference-Cited by-同舟云学术

Pentacyclic triterpenes and steroids from the stem bark of uchi (Sacoglottis uchi, Humiriaceae)

Published:2013-12 Issue:4 Volume:43 Page:525-528
ISSN:0044-5967
Container-title:Acta Amazonica
language:
Short-container-title:Acta Amaz.

Author:

Abreu Viviane Gomes da Costa¹,Corrêa Geone Maia²,Lagos Izandina Aparecida dos Santos³,Silva Roqueline Rodrigues¹,Alcântara Antônio F. de C.¹

Affiliation:

1. Universidade Federal de Minas Gerais, Brazil

2. Universidade Federal de Minas Gerais, Brazil; Universidade Federal do Amazonas, Brazil

3. Instituto Nacional de Pesquisas da Amazônia, Brazil

Abstract

The ethanol extract from stem bark of Sacoglottis uchi Huber (popularly known as “uchi” in the Amazon Region) was submitted to chromatographic fractionation. The dichloromethane fractions provided the pentacyclic triterpene 3-oxo-friedelin (1). The dichloromethane:methanol fractions provided the pentacyclic triterpenes pseudotaraxasterol (2), lupeol (3), a-amyrin (4), betulin (5), and methyl 2ß,3ß-dihydroxy-urs-12-en-28-oate (6) and a mixture of the steroids sitosterol (7) and stigmasterol (8). Their chemical structures were determined by NMR spectroscopy and comparison with spectroscopic data from the literature. All compounds are described for the first time in this species.

Publisher

FapUNIFESP (SciELO)

Subject

General Agricultural and Biological Sciences

Link

http://www.scielo.br/pdf/aa/v43n4/15.pdf

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