LIGNANS AND NAPHTHOQUINONES FROM TABEBUIA-INCANA

Authors
DEOLIVEIRA AB RASLAN DS DEOLIVEIRA GG MAIA JGS
Citation
Ab. Deoliveira et al., LIGNANS AND NAPHTHOQUINONES FROM TABEBUIA-INCANA, Phytochemistry, 34(5), 1993, pp. 1409-1412
Citations number
11
Categorie Soggetti
Plant Sciences
Journal title
Phytochemistry → ACNP
ISSN journal
00319422
Volume
34
Issue
5
Year of publication
1993
Pages
1409 - 1412
Database
ISI
SICI code
0031-9422(1993)34:5<1409:LANFT>2.0.ZU;2-3
Abstract
The trunkwood of Tabebuia incana afforded the lignans pawlownin and cy cloolivil as the major constituents together with a cycloolivil aceton ide, lapachenole, tecomaquinone 1, dehydro-iso-alpha-lapachone and thr ee furanonaphthoquinones including the known 2(1'-hydroxyethyl)naphtho [2,3-b]furan-4,9-quinone. The two new furanonaphthoquinones were chara cterized as 2-ethyl-5-hydroxynaphtho[2,3-b]furan-4,9-quinone and oxyet hyl)-7-methoxynaphtho[2,3-b]furan-4,9-quinone on the basis of spectral data and chemical transformations.