New Alloaromadendrane, Cadinene and Cyclocopacamphane Type Sesquiterpene Derivatives and Bibenzyls from Dendrobium nobile

Ye, Qinghua; Zhao, Weimin

doi:10.1055/s-2002-33786

Cited by 77 publications

(45 citation statements)

References 11 publications

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“…20) Determination of Absolute Configuration The concentrated residue of the hydrolyzed sugars in pyridine (0.04 mol/l) and L-cysteine ethyl ester hydrochloride (0.06 mol/l) were mixed and the solution was warmed at 60°C for 1 h. Acetic anhydride (150 ml) was then added and the mixture was warmed at 90°C for another 1 h. After evaporation of pyridine and acetic anhydride in vacuo, each residue was dissolved in acetone (350 ml) and the solution (1 ml) was subjected to GC. 21) The peaks for peracetylated thiazolidine derivatives with retention time of 31.68 and 44.57 min were observed for the samples which were, respectively, identical to the derivatives of authentic Dglucose and L-rhamnose prepared in the same manner.…”

Section: Methodsmentioning

confidence: 63%

Two New Flavonol Glycosides from Otostegia limbata BENTH.

Khan

Ahmad

Farooq

et al. 2009

CHEMICAL & PHARMACEUTICAL BULLETIN

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Section: Methodsmentioning

confidence: 63%

Two New Flavonol Glycosides from Otostegia limbata BENTH.

Khan

Ahmad

Farooq

et al. 2009

CHEMICAL & PHARMACEUTICAL BULLETIN

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“…For the cyclopacamphane-type sesquiterpene in Dendrobium species, C-3 is usually a quaternary carbon without oxygen and C-15 is constantly a methyl or an oxygenated methylene. [5][6][7] Interestingly, an oxygenated quaternary carbon (δ C 78.1) and a methylene carbon (δ C 35.2) signals appeared in 13 C NMR (DEPT) spectrum of compound 1. From the HSQC spectral data of 1, twenty-one protons were assigned unambiguously to thirteen carbons, respectively.…”

Section: Resultsmentioning

confidence: 99%

Dendrowardol C, a novel sesquiterpenoid from Dendrobium wardianum Warner

Fan

et al. 2013

Nat. Prod. Bioprospect.

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Dendrowardol C (1)-a novel sesquiterpenoid, with an unprecedented 4/5/6/6 tetracyclic carbon backbone, together with two known cyclopacamphane-type sesquiterpenoids; dendronobilin I (2) and dendrobane A (3) were isolated from the stems of Dendrobium wardianum Warner. The structure of 1 was established on the basis of spectroscopic data and the absolute configuration was determined by single-crystal X-ray diffraction crystallography. The hypothetical biosynthetic pathway of 1 was postulated. Compound 1 showed no cytotoxic activity against human tumor cell lines HL-60, SMMC-7721, A-549, MCF-7, and SW480.

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“…Indeed, noble dendrobium is one of the easiest orchids to grow (CAMPOS, 1998;SILVA, 1986). It is one of the three species used in the formulation of "ShiHu" (with D. tosaense and D. moniliforme) (LO et al, 2004;YE and ZHAO, 2002), which is an antipyretic and tonic drink that is also described as an aphrodisiac in traditional Chinese medicine (HANELT, 2001). It also has antitumor and antimicrobial properties and inhibition of in-vitro lipid peroxidation (DEVI et al, 2009), and anti-retroviral (HIV) properties (SÁNCHEZ-DUFFHUES et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Stems age, nitrogen fertilizer and salicylic acid application in cutting induction of noble dendrobium orchid of the Yamamoto series cultivars

Soccol

Venturieri

Pedrotti

2017

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Propagation of noble dendrobium orchid (Dendrobium nobile Lindl.) by cutting was studied in two experiments. In the first experiment we evaluated the effect stem age on propagation success: mature stems -from already bloomed stems; and young stems -yet to bloom; and Nitrogen fertilizer application, from two sources: as Nitrate and Ammonium (respectively as Calcium Nitrate at concentrations of: 5.81 gL -1 ; 11.61 gL -1; 17.42 gL -1; and Urea at concentrations of 2.00 gL -1 ; 4.00 gL -1 and 6.00 gL -1 plus control treatments). We evaluated the following parameters: the number of cuttings stalks that launched shoots and/or roots, vigor, number of roots per plant and root length per plant. Factorial analysis of variance (stems age x source of Nitrogen; and age of stem x Nitrogen level) was applied using a Generalized Linear Model (GLM) approach. Where significant differences were observed, averages were compared using post-hoc tests (Tukey). Propagation success was higher using cuttings from mature stems (60.2%), a value 1.6 times higher than obtained with stem cuttings from young stems (38.0%). Application of Nitrogen, in both forms, did not influence any of the evaluated parameters. In the second experiment we treated cuttings from mature stems with Salicylic acid in 3 concentrations (0.10 mM; 0.50 mM; 1.00 mM and plus a control treatment). Evaluated parameters included proportion of cuttings stalks that launched shoots and/or roots, leaf length, root length, and number of roots per stem cutting. Factorial analysis of variance was applied with post-hoc tests. Application of 0.50 mM of Salicylic acid increased the proportion of cuttings stalks that launched shoots and/or roots by 20.5% relative to the control treatment. Keywords: Dendrobium nobile, propagation, small farmers, floriculture, elicitor molecule RESUMO Idade dos ramos, aplicação de fertilizantes nitrogenados e ácido salicílico, na estaquia da orquídea olho-de-boneca em cultivares da série Yamamoto A propagação da orquídea olho-de-boneca (Dendrobium nobile Lindl.) por estaquia, foi estudada em dois experimentos: no primeiro foi avaliado o efeito de duas idades de hastes utilizadas para as estacas: maduras -que já haviam florescido; e jovensque não haviam florescido ainda; e aplicação de fertilizantes nitrogenados, oriundos de duas fontes: na forma de nitrato e na de amônia (respectivamente como nitrato de cálcio nas concentrações de 5,81 gL -1 ; 11,61 gL -1; 17,42 gL -1 ; e uréia nas concentrações de 2,00 gL -1 ; 4,00 gL -1 e 6,00 gL -1 mais tratamentos controle. Os parâmetros avaliados foram: estacas que lançaram rebentos e/ou raízes, vigor, número de raízes e comprimento de raízes/por planta. A análise de variância fatorial foi aplicada (idade dos ramos x fonte de nitrogênio; e idade dos ramos x nível de nitrogênio) usando o Modelo Linear Generalizado (MLG). Quando diferenças significativas foram observadas, as medias foram comparadas pelo teste de Tukey. O melhor resultado foi obtido usando estacas oriundas de ramos maduros (60,2%), valor 1,6 ...

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New Alloaromadendrane, Cadinene and Cyclocopacamphane Type Sesquiterpene Derivatives and Bibenzyls from Dendrobium nobile

Cited by 77 publications

References 11 publications

Two New Flavonol Glycosides from Otostegia limbata BENTH.

Two New Flavonol Glycosides from Otostegia limbata BENTH.

Dendrowardol C, a novel sesquiterpenoid from Dendrobium wardianum Warner

Stems age, nitrogen fertilizer and salicylic acid application in cutting induction of noble dendrobium orchid of the Yamamoto series cultivars

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