Terpenoids from Neolitsea buisanensis

Wu, Shwu-Li; Li, Wen-Shyong

doi:10.1016/0031-9422(91)83488-7

Cited by 25 publications

(11 citation statements)

References 10 publications

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“…The 13 C and DEPT-135 NMR spectra revealed fifteen carbon signals, including two methyls (both of them bonded to C=C), three methylenes, four methines (including three oxygenated methines and an endocyclic double bond methine), and six quaternary carbons (including one oxygen-bearing quaternary carbon, two carbonyl carbons, and three double bond quaternary carbons). All of the above information suggested that compound 1 was a germacrane-type sesquiterpenoid [8][9][10], which was further supported by the following analysis. The 1 H-1 H COSY spectrum revealed two spin systems H-1, H 2 -2, and H 2 -3, and H-8 and H 2 -9 (l " Fig.…”

Section: Extraction and Isolationsupporting

confidence: 62%

“…3). In this paper the relative configuration of the known compound 9 [8] was also confirmed by a single-crystal X-ray diffraction analysis (l " Fig. 3).…”

supporting

confidence: 60%

“…Consequently, the structure of linderanlide F was elucidated as 12 with the configuration at C-8 undetermined. In this study, compounds 6 and 7 were isolated as known secondary metabolites on the basis of ESI-MS, NMR, and optical rotation data, as well as comparison with the reported data [8]. A detailed literature search showed that the relative configurations at C-8 in compounds 6 and 7 were not reported.…”

mentioning

confidence: 99%

“…3). Based on ESI-MS, NMR, optical rotation data, and comparison with reported data, the known isolated compounds were determined as linderanine C (6) [8], linderanine A (7) [8], linderanine B (8) [8], linderane (9) [8,11], (+)-linderadine (10) [14], linderalactone (11) [10], ent-4(15)-eudesmene-1β,6α-diol 13 [15], hydroxylindestrenolide 14 [16], and dehydrocostuslactone 15 [17]. Among these, compounds 6-8, 10, 13, and 15 were isolated as secondary metabolites from the title plant for the first time.…”

mentioning

confidence: 99%

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Sesquiterpenoids from the Root Tubers ofLindera aggregata

Yin

Yang

et al. 2011

Planta Med

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Six new sesquiterpenoids, linderanlide A-F (1-5 and 12), and nine previously reported sesquiterpenoids (6-11 and 13-15) have been isolated from the root tubers of Lindera aggregata. The new structures have been elucidated by extensive spectroscopic interpretation, including UV, IR, NMR, HR-ESI-MS, and CD spectra. The structures of compounds 1, 2, 6, 7, and 9 were further confirmed by single-crystal X-ray diffraction analysis. The absolute configurations of compounds 3-5 were determined by CD spectral analysis.

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Section: Extraction and Isolationsupporting

confidence: 62%

“…3). In this paper the relative configuration of the known compound 9 [8] was also confirmed by a single-crystal X-ray diffraction analysis (l " Fig. 3).…”

supporting

confidence: 60%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Sesquiterpenoids from the Root Tubers ofLindera aggregata

Yin

Yang

et al. 2011

Planta Med

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“…Nine known sesquiterpenoids were identified as strychnilatone 2,6-dihydroxyxanthone (8), 20 menelloide C (9), 21 (À)hydroxylindestrenolide (10), 22 strychnistenolide 6-O-acetate (a) (11), 8a strychnistenolide 6-O-acetate (ß) (12), 23 pseudneolinderanec (13), 24 parvigemone (14), 25 linderanine A (15), 26 and lindenanolide G (16) 25 by the analysis of their spectroscopic data and comparison with literature values.…”

Section: Introductionmentioning

confidence: 99%

Sesquiterpenes from the roots of Lindera strychnifolia with inhibitory effects on nitric oxide production in RAW 264.7 cells

Liu

Kim

et al. 2016

Bioorganic & Medicinal Chemistry Letters

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Oxidative Cleavage of Furans

Merino

2015

Organic Reactions

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Oxidative ring cleavage reactions of furans constitute a group of important transformations that have found wide utility in synthetic organic chemistry. These processes have been used to prepare a variety of 1,4‐dicarbonyl compounds including 1,4‐dioxoalkenes, 4‐oxoalkenals, 4‐oxoalkenoic acids, and their derivatives such as 4‐hydroxybutenolides and 2,5‐dialkoxydihydrofurans. Oxidations of furfuryl alcohols (Achmatowicz reaction) and furfuryl amines (aza‐Achmatowicz reaction) provide access to highly functionalized heterocyclic structures that have been employed as intermediates in synthetic routes for the preparation of complex molecules including carbohydrates and alkaloids. Complete oxidative degradation of the furan ring affords carboxylic acids; thus the oxygen heterocycle has served as a masked carboxyl group in many synthetic studies. These transformations and their applications in total syntheses are covered in this chapter.

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Terpenoids from Neolitsea buisanensis

Cited by 25 publications

References 10 publications

Sesquiterpenoids from the Root Tubers ofLindera aggregata

Sesquiterpenoids from the Root Tubers ofLindera aggregata

Sesquiterpenes from the roots of Lindera strychnifolia with inhibitory effects on nitric oxide production in RAW 264.7 cells

Oxidative Cleavage of Furans

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