Triterpenes of Prunus serotina and P. lusitanica

A New tormentic acid derivative from Luehea divaricata Mart. (Tiliaceae)

“…The 1 H NMR spectrum of an oleanane type compound has seven methyl singlets and no doublets. 7 The 1 H NMR spectrum also showed two carbinolic methine hydrogens at δ 3.90 (td, J 10. . The correlation between H-3 and C-7' observed in HMBC spectrum was very important because it was possible to establish a link between the p-hydroxybenzoyl group and the triterpene skeleton from the structure 1 in the C-3 position.…”

Quantitative Analysis of Amygdalin and Prunasin in Prunus serotina Ehrh. using 1H‐NMR Spectroscopy

“…1) present in this genus are believed to be related to plant protection against herbivores, pathogens and competitors (Swain et al, 1992;Swain and Poulton, 1994;Santamour, 1998). Other compounds reported from this plant species include chlorogenic acid, flavonoid glycosides (Olszewska, 2005a(Olszewska, ,2005b(Olszewska, , 2007 and triterpenes (Biessels et al, 1974).…”

Isolation and Phytotoxicity of Terpenes from Tectona grandis

“…Both extracts were selected on the basis of the bioactivity levels shown in the wheat coleoptile bioassay (Macías et al 2008). Spectroscopic data for sesquiterpenes 1 (Gutierrez and Herz 1988), 2 (Zhang et al 2003), 3 and 4 (Niwa et al 1978), diterpenes 5 (Zulueta et al 1995), 6 (Urones et al 1987), 7 (Marsaioli et al 1975), 8 (Dekker et al 1988), 9 (Hasan et al 1982, and 12 (Cambie et al 1984), as well as triterpenes 13 (Dellagreca et al 1990), 14 (Aliotta et al 1991), 15 (Wenkert et al 1978, 16 (Brandao et al 1992), 17 (Seebacher et al 2003), 18, 19 (Pungitore et al 2005, 20 (Biessels et al 1974), and 21 (Takahashi et al 1974) were identical to those reported previously (see Fig. 2 for structures).…”