Planta Med 2002; 68(7): 631-634
DOI: 10.1055/s-2002-32898
Original Paper
Natural Product Chemistry
© Georg Thieme Verlag Stuttgart · New York

Quinoline Alkaloids, Coumarins and Volatile Constituents of Helietta longifoliata

Neusa F. de Moura1 , Euclésio Simionatto1 , Carla Porto1 , Solange C. S. Hoelzel1 , Emilia C. S. Dessoy1 , Nilo Zanatta1 , Ademir F. Morel1
  • 1Departamento de Química, Universidade Federal de Santa Maria, RS, Brazil
Further Information

Publication History

Received: October 11, 2001

Accepted: February 3, 2002

Publication Date:
22 July 2002 (online)

Abstract

A new quinoline alkaloid named helietidine (1), and seven known compounds (2 - 8) have been isolated from the stem barks of Helietta longifoliata. The structures of the new and the known compounds were established on the basis of spectral evidence, especially by 2D NMR (1H-1H COSY, NOESY, HMQC, HMBC). In addition, the volatile constituents of H. longifoliata leaves were analysed by gas chromatography-mass spectrometry (GC-MS). Twenty-five constituents were identified representing ca. of 96 % of the oil, and limonene (17.50 %), germacrene D (16.60 %), elemol (11.81 %), bicyclogermacrene (11.67 %), guaiol (11.53), and epi-α-bisabolol (7.24 %) were the most abundant components. The oil was bioactive against some Gram-positive and Gram-negative bacteria, as revealed by bioautography.

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Prof. Dr. Ademir Farias Morel

Departamento de Química

Universidade Federal de Santa Maria


Campus de Camobi - Santa Maria - RS

Brazil

Email: afmorel@base.ufsm.br

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