Phytochemical Constituents of the Bark of Vitex negundo L.

Abstract

Abstractp-Hydroxybenzoic acid (1) and β-sitosterol (2) were isolated, and identified from the methanol and hexane extracts of Vitex negundo. The structure of the compounds were established on the basis of spectral analysis.

Novel stilbenoids, including cannabispiradienone glycosides, from Tragopogon tommasinii (Asteraceae, Cichorieae) and their potential anti-inflammatory activity

“…Known simple phenolic acids, caffeoyl quinic acids, and flavonoids p-hydroxybenzoic acid 1 (Dhakal et al, 2008), p-coumaric acid 2 (Yi et al, 2010), 3-O-caffeoylquinic acid 3 (Tatefuji et al, 1996), chlorogenic acid 4 (Antognoni et al, 2011), 3,4-O-dicaffeoylquinic acid 5 (Tatefuji et al, 1996), 6 4,5-O-dicaffeoylquinic acid (Tatefuji et al, 1996), luteolin 7 (Xu et al, 2009), luteolin 7-O-glucoside 8 (Zhu and Zhang, 2004), vitexin 9 (Krafczyk and Glomb, 2008), orientin 10 ( Krafczyk and Glomb, 2008), quercetin 3-O-glucoside 11 (Jehle et al, 2010), and isorhamnetin 3-O-glucoside 12 (Olszewska and Roj, 2011) were identified by comparing their spectral data with data published in the literature.…”

bis-Sigmodiol: a new prenylflavanone dimer fromErythrina sigmoideaHua (Fabaceae) of Nigeria

“…In addition to bis-sigmodiol (1) and isobavachin (2) [28], five known constituents lupiwighteone (3) [29], orientanol A (4) [30], ergosta-4, 6, 8(14), 22-tetraen-3-one (5) [31], lupenyl acetate (6) [32] and phydroxybenzoic acid [33] have been isolated and characterized (Figure 1). Their brief spectral data are given in Section 3.…”

“…E. sigmoidea is an erect woody tree that is about 17 feet tall with a thorny stem and hairy leaves. As a result of this investigation, a new prenylflavanone dimer named bis-sigmodiol (1) was isolated and characterized along with six known constituents isobavachin (2) [28], lupiwighteone (3) [29], orientanol A (4) [30], ergosta-4, 6, 8(14),22-tetraen-3-one (5) [31], lupenyl acetate (6) [32], and p-hydroxybenzoic acid [33] (Figure 1). The known constituents obtained have not been reported so far from E. sigmoidea.…”

Phytochemical and Antinociceptive, Anti‐Inflammatory, and Antioxidant Studies of Smilax larvata (Smilacaceae)

“…The structures of compounds were established on the basis of extensive analysis of 1 H, 13 C, HMBC, and HSQC NMR experiments as well as comparing with literature data [Figures S1–S10 in supplementary data]. In this way, compounds 1 to 5 were identified as drabanemoroside [30], kaempferol 3- O - α -L-rhamnopyranosyl(1→2)- α -L-rhamnopyranoside [31], kaempferol [32], p -hydroxybenzoic acid [33], and p -coumaric acid [34], respectively.…”