26543-89-5Relevant academic research and scientific papers
(-)-Hinokinin causes antigenotoxicity but not genotoxicity in peripheral blood of Wistar rats
Medola, Jamile Ferraris,Cintra, Vivian Pedigone,Pesqueira e Silva, Erika Patricia,de Andrade Royo, Vanessa,da Silva, Rosangela,Saraiva, Juliana,Albuquerque, Sergio,Bastos, Jairo Kenupp,Andrade e Silva, Marcio Luis,Tavares, Denise Crispim
, p. 638 - 642 (2007)
(-)-Hinokinin, a dibenzylbutyrolactone lignan, exhibits significant trypanocidal activity both in vitro and in vivo, and was obtained by partial synthesis from (-)-cubebin isolated from the dry seeds of Piper cubeba. Considering the good trypanocidal activity of (-)-hinokinin, as well as its potential for the development of new drugs, it is extremely important to evaluate its possible mutagenic activity to allow its safe use in humans. In the present study, we evaluated the antimutagenic effect of (-)-hinokinin on the chromosome damage induced by the chemotherapeutic agent doxorubicin (DXR). The test system employed was the analysis of micronucleated polychromatic erythrocytes in peripheral blood of Wistar rats. Additionally, the antioxidant activity of (-)-hinokinin was evaluated in in vitro experiments by measuring the production of hydrogen peroxide and other peroxides. Our results showed that animals treated with different doses of (-)-hinokinin (10, 20, and 40 mg/kg b.w.) exhibited micronucleated cell frequencies similar to that of the negative control. In addition, treatment with combinations of (-)-hinokinin and DXR resulted in lower micronucleated cell frequencies than those observed for animals treated with DXR alone. The present study shows that (-)-hinokinin not only has no genotoxic effect, but is also effective in reducing the chromosome damage induced by DXR. (-)-Hinokinin exerted a significant antioxidant effect on parasite mitochondria in the protocol used, which might be one possible mechanism by which this compound may exert a protective effect on the chromosome damage induced by the free radicals generated by DXR.
Configurational analysis of cubebins and bicubebin from Aristolochia lagesiana and Aristolochia pubescens
De Pascoli, Inara C.,Nascimento, Isabele R.,Lopes, Lucia M.X.
, p. 735 - 742 (2006)
(8S,8′R,9S)-, (8R,8′R,9R)-, and (8R,8′R,9S)-cubebins, together with (8R,8′R,8″R,8?R,9R,9″S)-bicubebin, were isolated from Aristolochia lagesiana and Aristolochia pubescens. Their structures were determined by spectroscopic methods, including 1H and 13C NMR spectroscopy at low temperatures, and by chemical transformations.
Evaluation of lignan-loaded poly(ε-caprolactone) nanoparticles: synthesis, characterization, in vivo and in silico schistosomicidal activity
Bastos, Jairo K.,Cunha, Wilson R.,Forim, Moacir R.,Fuzo, Carlos A.,Laurentiz, Rosangela S.,Lima, Thais C.,Molina, Eduardo F.,Orenha, Renato P.,Parreira, Renato L. T.,Paula, Lucas A. de L.,Pauletti, Patricia M.,Santos, Fernanda A.,Santos, Mario F. C.,dos Santos, Fransergio F.,Januário, Ana H.,Magalh?es, Lizandra G.,Silva, Márcio L. A. e
supporting information, (2022/01/06)
Lignan dinitrohinokinin displays important biological activities, which led to the preparation of its poly-ε-caprolactone nanoparticles. Kinetics analysis revealed initially slow drug release followed by a prolonged, moderate release 6 h later due to DNHK diffusion through the polymeric matrix. Molecular dynamics simulations show that DNHK molecules that interact stronger with other DNHK molecules near the PCL/DNHK surface are more difficult to dissociate from the nanoparticle. The smaller diameter nanocapsules with negative surface charge conferred good colloidal stability. The formulations showed a size distribution with monodisperse systems formation. In vivo evaluation of schistosomicidal activity against Schistosoma mansoni showed that DNHK, when incorporated into nanoparticles, caused egg number reduction of 4.2% and 28.1% at 40 mg/kg and 94.2% and 84.4% at 400 mg/kg in the liver and the spleen, respectively. The PCL nanoparticles were stable in aqueous dispersion and could be optimized to be used as a promising lignan release agent.
Synthesis method and application of cubebin
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Paragraph 0024; 0047-0048, (2021/06/22)
The invention discloses a synthesis method of cubebin, which comprises the following steps: using 1,3-benzodioxole-5-carboxaldehyde and malonic acid as initial raw materials to generate 1,3-benzodioxole-5-propanoic acid, reacting the 1,3-benzodioxole-5-propanoic acid with oxalyl chloride to generate 1,3-benzodioxole-5-propionyl chloride, then reacting the 1,3-benzodioxole-5-propionyl chloride with (S)-4-benzyl-2-oxazolidinone to generate corresponding amide, reacting a product with bromopropyl to generate corresponding olefin, generating a corresponding carbonyl compound under the catalysis of a combined oxidant OsO4/NMO, using the carbonyl compound to prepare a corresponding hydroxyl compound, oxidizing the hydroxyl compound into a lactone compound by using a Fetizon reagent, reacting the lactone compound with 5-(bromomethyl)-1,3-benzodioxole, and finally, reducing the product by using diisobutylaluminium hydride to obtain cubebin. The invention further discloses application of cubebin in sedative and peaceful sleep. The invention provides a potential therapeutic drug for calming and sleeping.
Asymmetric Chemoenzymatic Synthesis of (?)-Podophyllotoxin and Related Aryltetralin Lignans
Li, Jian,Zhang, Xiao,Renata, Hans
supporting information, p. 11657 - 11660 (2019/08/02)
(?)-Podophyllotoxin is one of the most potent microtubule depolymerizing agents and has served as an important lead compound in antineoplastic drug discovery. Reported here is a short chemoenzymatic total synthesis of (?)-podophyllotoxin and related aryltetralin lignans. Vital to this approach is the use of an enzymatic oxidative C?C coupling reaction to construct the tetracyclic core of the natural product in a diastereoselective fashion. This strategy allows gram-scale access to (?)-deoxypodophyllotoxin and is readily adaptable to the preparation of related aryltetralin lignans.
A sterically encumbered photoredox catalyst enables the unified synthesis of the classical lignan family of natural products
Alfonzo, Edwin,Beeler, Aaron B.
, p. 7746 - 7754 (2019/08/30)
Herein, we detail a unified synthetic approach to the classical lignan family of natural products that hinges on divergence from a common intermediate that was strategically identified from nature's biosynthetic blueprints. Efforts toward accessing the common intermediate through a convergent and modular approach resulted in the discovery of a sterically encumbered photoredox catalyst that can selectively generate carbonyl ylides from electron-rich epoxides. These can undergo concerted [3 + 2] dipolar cycloadditions to afford tetrahydrofurans, which were advanced (2-4 steps) to at least one representative natural product or natural product scaffold within all six subtypes in classical lignans. The application of those synthetic blueprints to the synthesis of heterolignans bearing unnatural functionality was demonstrated, which establishes the potential of this strategy to accelerate structure-activity-relationship studies of these natural product frameworks and their rich biological activity.
Modular synthesis and biological investigation of 5-hydroxymethyl dibenzyl butyrolactones and related lignans
Davidson, Samuel J.,Pilkington, Lisa I.,Dempsey-Hibbert, Nina C.,El-Mohtadi, Mohamed,Tang, Shiying,Wainwright, Thomas,Whitehead, Kathryn A.,Barker, David
, (2018/11/30)
Dibenzyl butyrolactone lignans are well known for their excellent biological properties, particularly for their notable anti-proliferative activities. Herein we report a novel, efficient, convergent synthesis of dibenzyl butyrolactone lignans utilizing the acyl-Claisen rearrangement to stereoselectively prepare a key intermediate. The reported synthetic route enables the modification of these lignans to give rise to 5-hydroxymethyl derivatives of these lignans. The biological activities of these analogues were assessed, with derivatives showing an excellent cytotoxic profile which resulted in programmed cell death of Jurkat T-leukemia cells with less than 2% of the incubated cells entering a necrotic cell death pathway.
Total synthesis of (-)-bicubebin A, B, (+)-bicubebin C and structural reassignment of (-)-cis-cubebin
Davidson, Samuel J.,Pearce, A. Norrie,Copp, Brent R.,Barker, David
supporting information, p. 5368 - 5371 (2017/11/06)
The first total synthesis of (-)-bicubebin A, and two previously unreported dilignans, (-)-bicubebin B and (+)-bicubebin C has been achieved through the dimerization of (-)-cubebin, confirming the structure and absolute stereochemistry of (-)-bicubebin A. Analysis of the data for (-)-bicubebin B showed it matched that of reported compound (-)-cis-cubebin. The NMR data of the subsequently synthesized proposed structure of cis-cubebin confirmed that its original proposed structure was incorrect.
Radical one-pot α,β-dual and β-mono-oxymethylation of alkylidenemalonate
Yamada, Ken-Ichi,Konishi, Takehito,Nakano, Mayu,Fujii, Shintaro,Cadou, Romain,Yamamoto, Yasutomo,Tomioka, Kiyoshi
experimental part, p. 5775 - 5780 (2012/09/07)
Dimethylzinc-mediated radical conjugate addition reaction of dimethyl alkylidenemalonates with iodomethyl pivalate gave a high yield of the α,β-dual oxymethylation product in one pot under air and the β-pivaloyloxymethylation product under argon.
Synthesis, anti-virus and anti-tumour activities of dibenzylbutyrolactone lignans and their analogues
Xia, Yamu,You, Jia,Zhang, Yuanyuan,Su, Zhongliang
experimental part, p. 565 - 569 (2010/03/03)
An efficient synthesis of dibenzylbutyrolactone lignans and their analogues has been developed. Based on a Stobbe condensation of piperonal or veratraldehyde with diethylsuccinate and alkylation with 3,4- methylenedioxybenzyl bromide to give the skeleton
