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Automatic identification of terpenoid skeletons by feed-forward neural networks
(Elsevier B.V., 2006-10-10)
Feed-forward neural networks (FFNNs) were used to predict the skeletal type of molecules belonging to six classes of terpenoids. A database that contains the (13)C NMR spectra of about 5000 compounds was used to train the ...
A program for terpenoid skeleton prediction based on botanical information
(2003-01-01)
This paper describes a new program developed to the SISTEMAT expert system, the SISOCBOT program. This program employs the botanical data analysis and predicts, at the end of analysis, the probable skeleton of a compound ...
Acylated flavonol glycosides and terpenoids from the leaves of Alibertia sessilis
(Soc Brasileira Quimica, 1997-05-01)
Two novel acylated flavonol glycosides, along with iridoids, triterpenes, steroids and alpha-tocopherolquinone, were isolated from the leaves of Alibertia sessilis (Rubiaceae). The determination of the structures of the ...
The flavonoid biosynthetic enzyme chalcone isomerase modulates terpenoid production in glandular trichomes of tomato
(American Society Of Plant Biologist, 2014-01)
Flavonoids and terpenoids are derived from distinct metabolic pathways but nevertheless serve complementary roles in mediating plant interactions with the environment. Here, we show that glandular trichomes of the anthocyanin ...
Antifungal Terpenoids from Hyalis argentea var. latisquama
(American Chemical Society, 2014-07)
A detailed chemical study of the aerial parts and rhizomes of Hyalis argentea var. latisquama yielded a variety of sesqui- and diterpenes. In total, 26 compounds were isolated and identified, of which four are new, namely, ...
Automatic identification by C-13 NMR of substituent groups bonded in natural product skeletons
(Elsevier B.V., 2002-11-01)
The aim of this paper is to present a procedure that utilizes C-13 NMR for identification of substituent groups which are bonded to carbon skeletons of natural products. For so much was developed a new version of the program ...
Natural terpenoids from Ambrosia species are active in vitro and in vivo against human pathogenic trypanosomatids
(Public Library Of Science, 2013-09)
Among the natural compounds, terpenoids play an important role in the drug discovery process for tropical diseases. The aim of the present work was to isolate antiprotozoal compounds from Ambrosia elatior and A. scabra. ...
STUDIES ON CHILEAN LICHENS XXXI: ADDITIONS TO THE CHEMISTRY OF PSEUDOCYPHELLARIA
(Sociedad Chilena de Química, 2001)