Eurycomaoside: A New Quassinoid-Type Glycoside from the Roots of Eurycoma longifolia

Erdal Bedir; Hassan Abou-Gazar; Julius Ngunde Ngwendson; Ikhlas Ahmad Khan

doi:10.1248/cpb.51.1301

Notes

Eurycomaoside: A New Quassinoid-Type Glycoside from the Roots of Eurycoma longifolia

Erdal Bedir, Hassan Abou-Gazar, Julius Ngunde Ngwendson, Ikhlas Ahmad Khan

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Keywords: Eurycoma longifolia, quassinoid, glycoside, Simaroubaceae

JOURNAL FREE ACCESS

2003 Volume 51 Issue 11 Pages 1301-1303

DOI https://doi.org/10.1248/cpb.51.1301

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Abstract

A new C₁₉-quassinoid-type glycoside has been isolated from the roots of Eurycoma longifolia. The structure elucidation of the compound was achieved by a combination of one- and two-dimensional NMR techniques, including ¹H–¹H-correlation spectroscopy (COSY), ¹H–¹³C-heteronuclear correlation spectroscopy (HMQC), and ¹H–¹³C-heteronuclear multiple-bond correlation spectroscopy (HMBC), as well as high resolution electrospray ionization Fourier transformation mass spectrometry (HR-ESI-FT-MS) data. The C(1)-glycosidation site in the quassinoid framework is encountered for the first time.

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