• Keine Ergebnisse gefunden

Contents of 1,4-Benzoxazin-3-ones and 2-Benzoxazolinone from Stenandrium dulce (Nees)

N/A
N/A
Info
Herunterladen
Protected

Academic year: 2022

Aktie "Contents of 1,4-Benzoxazin-3-ones and 2-Benzoxazolinone from Stenandrium dulce (Nees)"

Copied!
1
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Jetzt herunterladen ( 1 Seite )

Volltext

(1)

Contents of 1,4-Benzoxazin-3-ones and 2-Benzoxazolinone from Stenandrium dulce (Nees)

He´ctor R. Bravo

a,*

, Sylvia V. Copaja

a

, and Jose´ San Martı´n

b

a Departamento de Quı´mica, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile. Fax: 56(2)22 71 38 88. E-mail: scopaja@uchile.cl

b Instituto de Biologı´a Vegetal y Biotecnologı´a, Universidad de Talca, Casilla 747, Talca, Chile

* Author for correspondence and reprint requests

Z. Naturforsch.59 c, 177Ð180 (2004); received April 9/June 2, 2003

Secondary metabolites, DIBOA, HBOA, 7-OH-HBOA and BOA, were isolated and quan- tified from S. dulce(Nees), a native species in Chile belonging to the Acanthaceae family.

The highest DIBOA and HBOA contents were determined in leaves (9.25 mmol kgÐ1fr. wt) and root (6.81 mmol kgÐ1fr. wt), respectively. Aglycones, 7-OH-HBOA and HBOA, were isolated together from root extracts of Acanthaceae species. Both, HBOA and 7-OH-HBOA should be direct precursors in the biosynthesis of DIBOA and DIMBOA, respectively.

Key words: Stenandrium dulce(Nees), Acanthaceae, Hydroxamic Acids

Referenzen

Jetzt herunterladen ( PDF - 1 Seite - 24.48 KB )

ÄHNLICHE DOKUMENTE

1,4-Benzoxazin-3-one, 2-Benzoxazolinone and Gallic Acid from Calceolaria thyrsiflora Graham and their Antibacterial Activity

Secondary metabolites, DIBOA, HBOA, 7-OH-HBOA, BOA and gallic acid, were isolated andquantifiedfrom Calceolaria thyrsiflora Graham, a native medicinal plant of Chile belong- ing to

1,4-Benzoxazin-3-one, 2-Benzoxazolinone and Gallic Acid from Calceolaria thyrsiflora Graham and their Antibacterial Activity

Secondary metabolites, DIBOA, HBOA, 7-OH-HBOA, BOA and gallic acid, were isolated and quantified from Calceolaria thyrsiflora Graham, a native medicinal plant of Chile belong- ing

Contents of 1,4-Benzoxazin-3-ones and 2-Benzoxazolinone from Stenandrium dulce (Nees)

In this work, we isolated and simultaneously quantified by using HPLC method the contents of DIBOA, BOA, N-deoxy-DIBOA (HBOA) and 7-hydroxy-N-deoxy-DIBOA (7-OH-HBOA) from roots

Table of Contents:......................................................................Welcome from the Editors 4

(Although it is definitely not true, as some Islam critics have claimed, that Islamists invented the term “Islamophobia” [which was actually first coined in the early 20 th

Table of Contents:.................................................................................Welcome from the Editors 4

Speaking last August, just weeks aer the Cyprus and Bulgaria plots, a senior US government official bluntly stated: “We assess that Hezbollah could attack in Europe or elsewhere at

The Contents and Timing of a European Banking Union:

One of them, the European Banking Authority (EBA), is now empowered, inter alia, to perform a mandatory, legally binding mediation role to solve disputes between

Contents The Pilot

Line direction: Coordinate axis in whose positive direction the probe moves after touching the first contour point. Scanning angle: Direction of touch probe traverse relative to

Contents The Pilot

Feed rate for plunging: Q206 Pecking depth: Q202 Feed rate for milling: Q207 Surface coordinate: Q203 2nd set-up clearance: Q204 Center in 1st axis: Q216 Center in 2nd axis: Q217