2013
DOI: 10.3390/molecules18032563
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A New Hydroxychavicol Dimer from the Roots of Piper betle

Abstract: Abstract:A new hydroxychavicol dimer, 2-('-hydroxychavicol)-hydroxychavicol (1), was isolated from the roots of Piper betle Linn. along with five known compounds, hydroxychavicol (2), aristololactam A II (3), aristololactam B II (4), piperolactam A (5) and cepharadione A (6). The structures of these isolated compounds were elucidated by spectroscopic methods. Compounds 1 and 2 exhibited inhibitory effects on the generation of superoxide anion and the release of elastase by human neutrophils.

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Cited by 34 publications
(12 citation statements)
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“…Signal at δ 174.6 and δ157.5 indicated the carbonyl carbons which are located at C-4 and C-5 while signal at δ 103.8 attributed to the methylenedioxy group. These spectroscopic properties were similar to those of the known compound cepharadione-A; previously isolated from roots of two species of Piperaceae; Piper nigrum [20] and Piper betle Linn [21]. The analysis of 1D NMR spectra data of compounds 1, 2, 3 and 4 were tabulated in Table 1 together with the sources of the references [22][23][24].…”
Section: Structural Elucidationsupporting
confidence: 65%
“…Signal at δ 174.6 and δ157.5 indicated the carbonyl carbons which are located at C-4 and C-5 while signal at δ 103.8 attributed to the methylenedioxy group. These spectroscopic properties were similar to those of the known compound cepharadione-A; previously isolated from roots of two species of Piperaceae; Piper nigrum [20] and Piper betle Linn [21]. The analysis of 1D NMR spectra data of compounds 1, 2, 3 and 4 were tabulated in Table 1 together with the sources of the references [22][23][24].…”
Section: Structural Elucidationsupporting
confidence: 65%
“…After chromatographic purification, compounds 1 and 2 were isolated from subfractions A3 and A4, respectively. Compound 1 was identified to be aristolactam AII based on its spectroscopic data and with direct comparison with those previously reported by Tsuruta et al [28] and Lin et al [29]. Similarly, compound 2 was assigned to be aristolactam BII previously reported by Lin et al [29].…”
supporting
confidence: 69%
“…After evaluated for their anti-HIV 1-RT activity (Table 1), the active subfractions were further separated by means of chromatographic techniques to yield compounds 3-9 (isolated from subfractions B2, B3 and B5). By comparison of their spectroscopic data with those previously described in the literature, compounds 3-9 were identified to be piperolactam A, [29] piperolactam C, [30] goniopedaline, [31] duguevalline, [32] noraristolodione, [33], asperphenamate, [34,35], N-benzoyl-Lphenylalaninol [36], respectively.…”
mentioning
confidence: 93%
“…Many of these isolated aporphine alkaloids were isolated previously from Piper genus. Compound (1) and (2) have been isolated from P. officinarum (Salleh et al, 2014c) and P. betle (Lin et al, 2013), whilst the compound (3), (4), and (5) have been isolated from P. betle (Amin et al, 2017), P. taiwanense (Chen et al, 2004), and P. nigrum (Ee et al, 2008), respectively. The isolated terpenoids were also reported most of the Piper species.…”
Section: Resultsmentioning
confidence: 99%