Log in

Relevant bibliographies by topics / Butenolides / Journal articles

To see the other types of publications on this topic, follow the link: Butenolides.

Journal articles on the topic 'Butenolides'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Butenolides.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Villamizar-Mogotocoro, Andrés-Felipe, Andrés-Felipe León-Rojas та Juan-Manuel Urbina-González. "Δα,β-Butenolides [Furan-2(5H)-ones]: Ring Construction Approaches and Biological Aspects - A Mini-Review". Mini-Reviews in Organic Chemistry 17, № 8 (2020): 922–45. http://dx.doi.org/10.2174/1570193x17666200220130735.

Full text

Abstract:

The five-membered oxacyclic system of furan-2(5H)-ones, commonly named as γ- butenolides or appropriately as Δα,β-butenolides, is of high interest since many studies have proven its bioactivity. During the past few years, Δα,β-butenolides have been important synthetic targets, with several reports of new procedures for their construction. A short compendium of the main different synthetic methodologies focused on the Δα,β-butenolide ring formation, along with selected examples of compounds with relevant biological activities of these promising pharmaceutical entities is presented.

APA, Harvard, Vancouver, ISO, and other styles

2

Wang, Zhen-Hua, Zhi-Jun Wu, Xue-Qun Huang та ін. "Diastereo- and enantioselective direct vinylogous Michael addition of γ-substituted butenolides to 2-enoylpyridines catalyzed by chiral bifunctional amine-squaramides". Chemical Communications 51, № 87 (2015): 15835–38. http://dx.doi.org/10.1039/c5cc06383c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Yang, Long-He, Han Ou-Yang, Xia Yan, et al. "Open-Ring Butenolides from a Marine-Derived Anti-Neuroinflammatory Fungus Aspergillus terreus Y10." Marine Drugs 16, no. 11 (2018): 428. http://dx.doi.org/10.3390/md16110428.

Full text

Abstract:

To investigate structurally novel and anti-neuroinflammatory natural compounds from marine-derived microorganisms, the secondary metabolites of Aspergillus terreus Y10, a fungus separated from the sediment of the coast in the South China Sea, were studied. Three new compounds (2–4), with novel open-ring butenolide skeletons, were isolated from the ethyl acetate extract of the culture medium. In addition, a typical new butenolide, asperteretal F (1), was found to dose-dependently inhibit tumor necrosis factor (TNF-α) generation with an IC50 of 7.6 μg/mL. The present study shows the existence of

APA, Harvard, Vancouver, ISO, and other styles

4

Kaklyugina, Tatyana Ya, Larisa A. Badovskaya, Ludmila N. Sorotskaya, et al. "Reaction of 2-butenolide and 4-bromo-2-butenolide with 5-aryl-2-furaldehydes and thiolates." Collection of Czechoslovak Chemical Communications 51, no. 10 (1986): 2181–85. http://dx.doi.org/10.1135/cccc19862181.

Full text

Abstract:

Condensation of 2-butenolide with 5-(4-X-phenyl)-2-furaldehydes (X = H, CH3, OCH3, Br, Cl, NO2) in methanol in the presence of piperidine as catalyst afforded the corresponding 4-[5-(4-X-phenyl-2-furfurylidene)]-2-butenolides. As shown by 1H NMR spectra, the reaction afforded mixtures of Z- and E-isomers which on crystallization were isomerized to the stable Z-isomers (except when X = NO2). 4-Bromo-2-butenolide reacted with sodium salts of 2-mercaptobenzoxazole and 2-mercaptobenzimidazole to give the corresponding 4-(benzazoyl-2-thio)-2-butenolides, probably by an anion-radical mechanism. With

APA, Harvard, Vancouver, ISO, and other styles

5

Madhavachary, Rudrakshula, Rosy Mallik, and Dhevalapally B. Ramachary. "Organocatalytic Enantiospecific Total Synthesis of Butenolides." Molecules 26, no. 14 (2021): 4320. http://dx.doi.org/10.3390/molecules26144320.

Full text

Abstract:

Biologically important, chiral natural products of butenolides, (−)-blastmycinolactol, (+)-blastmycinone, (−)-NFX-2, (+)-antimycinone, lipid metabolites, (+)-ancepsenolide, (+)-homoancepsenolide, mosquito larvicidal butenolide and their analogues were synthesized in very good yields in a sequential one-pot manner by using an organocatalytic reductive coupling and palladium-mediated reductive deoxygenation or organocatalytic reductive coupling and silica-mediated reductive deamination as the key steps.

APA, Harvard, Vancouver, ISO, and other styles

6

Pepperman, Armand B., and Judith M. Bradow. "Strigol Analogs as Germination Regulators in Weed and Crop Seeds." Weed Science 36, no. 6 (1988): 719–25. http://dx.doi.org/10.1017/s004317450007572x.

Full text

Abstract:

Twelve analogs of the strigol D-ring (butenolides) were evaluated at 0.1 mM as germination regulators of 26 weed and crop seeds. In general, the butenolides either inhibited or did not affect monocot germination, although the hydroxybutenolide stimulated germination of dormant cheat and nondormant perennial ryegrass and sorghum seeds. The response rate for dicots was greater but still primarily inhibitory. Dormant lettuce seeds (both light-sensitive and light-insensitive), Palmer amaranth, and redroot pigweed showed several significant responses, both inhibitory and stimulatory. Some of the bu

APA, Harvard, Vancouver, ISO, and other styles

7

Noureddine, Tamma, and Gherraf Noureddine. "Synthesis of some Butenolides and Study of their Antibacterial Activity." International Letters of Chemistry, Physics and Astronomy 14 (September 2013): 61–67. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.14.61.

Full text

Abstract:

Butenolides and their analogues represent a wide range of natural compounds of a medical and biological importance. In the last decades, a great number of compounds of various structures, in general from Alkylidene butenolide, were isolated and showed biological activities. In this work we have studied the reactivity of some alkylidene butenolide and their antibacterial activity. the study is of a scientific interest in terms of the synthesis of new compounds (Butenolide 01: 5-hydroxy-5-(1-methoxypropan-2-yl)-4-methylfuran-2(5H)-one, Butenolide 02: 5-(1-methoxypropan-2-yl)-4-methylfuran-2(5H)-

APA, Harvard, Vancouver, ISO, and other styles

8

Noureddine, Tamma, and Gherraf Noureddine. "Synthesis of some Butenolides and Study of their Antibacterial Activity." International Letters of Chemistry, Physics and Astronomy 14 (May 19, 2013): 61–67. http://dx.doi.org/10.56431/p-8o5l71.

Full text

Abstract:

Butenolides and their analogues represent a wide range of natural compounds of a medical and biological importance. In the last decades, a great number of compounds of various structures, in general from Alkylidene butenolide, were isolated and showed biological activities. In this work we have studied the reactivity of some alkylidene butenolide and their antibacterial activity. the study is of a scientific interest in terms of the synthesis of new compounds (Butenolide 01: 5-hydroxy-5-(1-methoxypropan-2-yl)-4-methylfuran-2(5H)-one, Butenolide 02: 5-(1-methoxypropan-2-yl)-4-methylfuran-2(5H)-

APA, Harvard, Vancouver, ISO, and other styles

9

Perjéssy, Alexander, Aida Avetisovna Avetisyan, Anna Alexandrovna Aknazaryan та Gagik Surenovich Melikyan. "Preparation of 3-cyano-4-(R-vinyl)-5,5-dimethyl-Δ3-butenolides and substituent effects on their infrared spectra". Collection of Czechoslovak Chemical Communications 54, № 6 (1989): 1666–74. http://dx.doi.org/10.1135/cccc19891666.

Full text

Abstract:

Twenty nine 3-cyano-4-(R-vinyl)-5,5-dimethyl-Δ3-butenolides were prepared by condensation of 3-cyano-4,5,5-trimethyl-Δ3-butenolide with aliphatic and aromatic aldehydes. The wave numbers of C=O, C=N and C=C stretching vibrations of synthesized compounds were measured in trichloro- and tetrachloromethane. The spectral data were correlated with substituent conotants using Hammett-Brown and the improved and extended Seth-Paul-Van Duyse equation. The statistical results of correlations were compared with those of ethyl α-cyanocinnamates, ethyl benzoates and benzonitriles. The transmission factors

APA, Harvard, Vancouver, ISO, and other styles

10

Balšánek, Vojtěch, Lucie Tichotová, Jiří Kuneš, et al. "Cytostatic tetrazole–butenolide conjugates: linking tetrazole and butenolide rings via stille coupling and biological activity of the target substances." Collection of Czechoslovak Chemical Communications 74, no. 7-8 (2009): 1161–78. http://dx.doi.org/10.1135/cccc2009040.

Full text

Abstract:

A series of tetrazoles linked to the butenolide core via benzene rings were prepared by the Stille coupling reaction of α-(tributylstannyl)butenolides and 5-(alkylsulfanyl)-1-(4-iodophenyl)tetrazoles, and the compounds were tested for antifungal and cytostatic activity. Interesting antifungal activities against the filamentous strain Absidia corymbifera, and cytostatic activities against leukemic cells HL-60 and CCRF-CEM were found. The cytostatic activity requires the presence of both the butenolide ring and the alkylsulfanyl group bound to tetrazole ring. In addition, the feasibility of Pd-c

APA, Harvard, Vancouver, ISO, and other styles

11

Di Florio, Romina, and Mark A. Rizzacasa. "Synthesis of the Syributins and Formal Total Synthesis of Syringolide 1." Australian Journal of Chemistry 53, no. 4 (2000): 327. http://dx.doi.org/10.1071/ch99170.

Full text

Abstract:

A synthesis of syributins 1 (5) and 2 (6) from D-glyceraldehyde acetonide (12) and furans (14) and (15) is described. Compounds (5) and (6) are cometabolites of the novel non-proteinaceous C-glycosidic elicitor molecules the syringolides 1 (1) and 2 (2). Under a variety of acidic conditions, the intermediate butenolides (9) and (10) provided syributins 1 (5) and 2 (6). Similar results have been reported by Honda and coworkers who converted butenolide (20) into syringolide 1 (1). Since compound (20) was also synthesized by the present new route, a formal synthesis of syringolide 1 (1) has been

APA, Harvard, Vancouver, ISO, and other styles

12

Cheng, Zhenfeng, Qingyun Gu, Yushan Xie, Yanan Zhang та Xiaobao Zeng. "BF₃·Et₂O-Mediated annulation of α-keto acids with aliphatic ketones for the synthesis of γ-hydroxy-butenolides and γ-alkylidene-butenolides". RSC Advances 12, № 37 (2022): 24237–41. http://dx.doi.org/10.1039/d2ra04546j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Kang, Tian-Chen, Xuan Zhao, Feng Sha, and Xin-Yan Wu. "Highly enantioselective direct allylic alkylation of butenolides with Morita–Baylis–Hillman carbonates catalyzed by chiral squaramide-phosphine." RSC Advances 5, no. 91 (2015): 74170–73. http://dx.doi.org/10.1039/c5ra14667d.

Full text

Abstract:

Asymmetric vinylogous allylic alkylation of β,γ-butenolides with Morita–Baylis–Hillman carbonates has been developed to construct γ,γ-disubstituted butenolides containing adjacent quaternary and tertiary chiral centers.

APA, Harvard, Vancouver, ISO, and other styles

14

Ray Choudhury, Abhijnan, and Santanu Mukherjee. "Deconjugated butenolide: a versatile building block for asymmetric catalysis." Chemical Society Reviews 49, no. 18 (2020): 6755–88. http://dx.doi.org/10.1039/c9cs00346k.

Full text

Abstract:

Deconjugated butenolides have emerged as a popular synthon for the enantioselective synthesis of γ-lactones. This review provides a comprehensive overview on the catalytic asymmetric reactions of deconjugated butenolides reported till date.

APA, Harvard, Vancouver, ISO, and other styles

15

Tu, Ping-Chen, Han-Chun Tseng, Yu-Chia Liang, et al. "Phytochemical Investigation of Tradescantia Albiflora and Anti-Inflammatory Butenolide Derivatives." Molecules 24, no. 18 (2019): 3336. http://dx.doi.org/10.3390/molecules24183336.

Full text

Abstract:

Phytochemical investigation of the whole plant of Tradescantia albiflora Kunth led to the isolation and characterization of a butanolide, rosmarinosin B (1), that was isolated from natural sources for the first time, a new butenolide, 5-O-acetyl bracteanolide A (2), and a new apocarotenoid, 2β-hydroxyisololiolide (11), together with 25 known compounds (compounds 3–10 and 12–28). The structures of the new compounds were elucidated by analysis of their spectroscopic data, including MS, 1D, and 2D NMR experiments, and comparison with literature data of known compounds. Furthermore, four butenolid

APA, Harvard, Vancouver, ISO, and other styles

16

Morimoto, Tsumoru, Chuang Wang, Hiroki Tanimoto, Levent Artok, and Kiyomi Kakiuchi. "Rhodium(I)-Catalyzed CO-Gas-Free Arylative Dual-Carbonylation of Alkynes with Arylboronic Acids via the Formyl C–H Activation of Formaldehyde." Synthesis 53, no. 18 (2021): 3372–82. http://dx.doi.org/10.1055/a-1468-8377.

Full text

Abstract:

AbstractThe rhodium(I)-catalyzed reaction of alkynes with arylboronic acids in the presence of formaldehyde results in a CO-gas-free arylative dual-carbonylation to produce γ-butenolide derivatives. The simultaneous loading of phosphine-ligated and phosphine-free rhodium(I) complexes is required for efficient catalysis. The former complex catalyzes the abstraction of a carbonyl moiety from formaldehyde through the activation of its formyl C–H bond (decarbonylation) and the latter catalyzes the subsequent dual-incorporation of the resulting carbonyl unit (carbonylation). The use of larger amou

APA, Harvard, Vancouver, ISO, and other styles

17

Simlandy, Amit K., та Santanu Mukherjee. "Catalytic asymmetric formal γ-allylation of deconjugated butenolides". Organic & Biomolecular Chemistry 14, № 24 (2016): 5659–64. http://dx.doi.org/10.1039/c5ob02362a.

Full text

Abstract:

A formalγ-allylation of deconjugated butenolides is reported based on a two-step sequence consisting of a catalytic diastereo- and enantioselective vinylogous nucleophilic addition to vinyl sulfones and Julia–Kocienski olefination. This highly modular approach delivers densely functionalized butenolides containing a quaternary stereogenic centre in excellent yield with high enantioselectivity.

APA, Harvard, Vancouver, ISO, and other styles

18

Peng, Qingyun, Weihao Chen, Xiuping Lin, Jiao Xiao, Yonghong Liu, and Xuefeng Zhou. "Butenolides from the Coral-Derived Fungus Aspergillius terreus SCSIO41404." Marine Drugs 20, no. 3 (2022): 212. http://dx.doi.org/10.3390/md20030212.

Full text

Abstract:

Five undescribed butenolides including two pairs of enantiomers, (+)-asperteretal G (1a), (−)-asperteretal G (1b), (+)-asperteretal H (2a), (−)-asperteretal H (2b), asperteretal I (3), and para-hydroxybenzaldehyde derivative, (S)-3-(2,3-dihydroxy-3-methylbutyl)-4-hydroxybenzaldehyde (14), were isolated together with ten previously reported butenolides 4–13, from the coral-derived fungus Aspergillus terreus SCSIO41404. Enantiomers 1a/1b and 2a/2b were successfully purified by high performance liquid chromatography (HPLC) using a chiral column, and the enantiomers 1a and 1b were new natural prod

APA, Harvard, Vancouver, ISO, and other styles

19

Zhang, Suoqin, Guangliang Zhang, Tianyun Zhou, et al. "Chiral VAPOL Imidodiphosphoric Acid-Catalyzed Asymmetric Vinylogous Mannich Reaction for the Synthesis of Butenolides." Synlett 29, no. 15 (2018): 2006–10. http://dx.doi.org/10.1055/s-0037-1610232.

Full text

Abstract:

Chiral butenolides were synthesized by the enantioselective vinylogous Mannich reaction. Chiral (VAPOL)-type imidodiphosphoric acids are efficient catalysts for the asymmetric vinylogous Mannich (AVM) reaction of aldimines and trimethylsiloxyfuran in toluene. Under the optimized conditions, a series of butenolides were obtained with high yields (up to 98%) and enantioselectivities (up to 97% ee) as well as excellent diastereoselectivities (up to 99:1 dr).

APA, Harvard, Vancouver, ISO, and other styles

20

Cambie, RC, GR Clark, CEF Rickard, PS Rutledge, GR Ryan, and PD Woodgate. "Chemistry of the Podocarpaceae. LXXII. Ring-C Modifications of Totarol." Australian Journal of Chemistry 41, no. 8 (1988): 1171. http://dx.doi.org/10.1071/ch9881171.

Full text

Abstract:

Totarol (1) has been converted into conjugated dienolides which have the B/C-ring systems found in naturally occurring nagilactones A and C and their analogues. Thus, treatment of the epoxide (11) with titanium(IV) tetrachloride affords the desired 7,9(11)- diene (12) and the saturated γ- lactone (23). Treatment of the epoxide (11) with diazabicyclo [3.4.0]non-5-ene gives a high yield of the butenolide (24); the alcohol (25) has been shown to be an intermediate in this reaction. Treatment of (11) with lithium iodide dihydrate in collidine gives the butenolides (24) and (26), and the novel rear

APA, Harvard, Vancouver, ISO, and other styles

21

Krawczyk, Ewa, Marek Koprowski, Danuta Cembrowska-Lech, Agata Wójcik, and Jan Kępczyński. "Synthesis of tricyclic butenolides and comparison their effects with known smoke—butenolide, KAR1." Journal of Plant Physiology 215 (August 2017): 91–99. http://dx.doi.org/10.1016/j.jplph.2017.04.021.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Paleta, Oldřich, Jiřı́ Paleček, and Bohumil Dolenský. "Fluorinated butanolides and butenolides." Journal of Fluorine Chemistry 111, no. 2 (2001): 175–84. http://dx.doi.org/10.1016/s0022-1139(01)00450-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Paleček, Jiřı́, Jaroslav Kvı́čala, and Oldřich Paleta. "Fluorinated butanolides and butenolides." Journal of Fluorine Chemistry 113, no. 2 (2002): 177–83. http://dx.doi.org/10.1016/s0022-1139(01)00543-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Avetisyan, A. A., and G. G. Tokmadzhyan. "Chemistry of ??,?-butenolides (review)." Chemistry of Heterocyclic Compounds 23, no. 6 (1987): 595–610. http://dx.doi.org/10.1007/bf00486901.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Knight, D. W. "Synthetic approaches to butenolides." Contemporary Organic Synthesis 1, no. 4 (1994): 287. http://dx.doi.org/10.1039/co9940100287.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Otsuka, Hideaki, Aiko Ito, Naomi Fujioka, et al. "Butenolides from Sinomenium acutum." Phytochemistry 33, no. 2 (1993): 389–92. http://dx.doi.org/10.1016/0031-9422(93)85525-v.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Renzetti, Andrea, and Kozo Fukumoto. "Synthesis of Phthalides and ,-butenolides by Transition Metal-Catalyzed Activation of C—H Bonds." Molecules 24, no. 4 (2019): 824. http://dx.doi.org/10.3390/molecules24040824.

Full text

Abstract:

Phthalides and ,-butenolides are two related classes of oxygenated heterocycles with a wide range of biological activities. An innovative strategy to prepare these compounds is based on C—H bond functionalization reactions, in which two simple, unfunctionalized molecules are coupled together with cleavage of a C—H bond and formation of a C—X bond (X=C or heteroatom). This paper reviews the methods for the synthesis of phthalides and ,-butenolides by C—H bond functionalization from non-halogenated starting materials. Over 30 methods are reported, mostly developed during the past ten years.

APA, Harvard, Vancouver, ISO, and other styles

28

Boussonnière, Anne, Romain Bénéteau, Jean-Christophe Rouaud, Carole Despiau, Jacques Lebreton, and Fabrice Dénès. "Chemoselective access to substituted butenolides via a radical cyclization pathway: mechanistic study, limits and application." Pure and Applied Chemistry 88, no. 3 (2016): 215–25. http://dx.doi.org/10.1515/pac-2015-1203.

Full text

Abstract:

AbstractWe developed a new approach to γ-lactols and methylene-γ-lactols based upon the radical cyclization of aluminium acetals obtained by reduction of α-bromoesters with DIBAL-H. The cyclic aluminium acetals resulting from the cyclization process could engage in situ in further functionalization, as illustrated by the Oppenauer-type oxidation to give the corresponding lactones and γ-butenolides. The preparation of butenolides using this strategy compared favourably with the direct, tin-mediated cyclization of α-bromoesters, for which side reactions such as epimerization via [1,5]-HAT proces

APA, Harvard, Vancouver, ISO, and other styles

29

Le, Zhengjie, Jun Ying, and Xiao-Feng Wu. "More than a CO source: palladium-catalyzed carbonylative synthesis of butenolides from propargyl alcohols and TFBen." Organic Chemistry Frontiers 6, no. 17 (2019): 3158–61. http://dx.doi.org/10.1039/c9qo00779b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Yang, Mengchen, Chen Chen, Xing Yi, et al. "Thiosquaramide-catalysed asymmetric double Michael addition of 2-(3H)-furanones to nitroolefines." Organic & Biomolecular Chemistry 17, no. 11 (2019): 2883–86. http://dx.doi.org/10.1039/c9ob00330d.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Cui, Jin, Naoya Kumagai, Takumi Watanabe, and Masakatsu Shibasaki. "Direct catalytic asymmetric and anti-selective vinylogous addition of butenolides to chromones." Chemical Science 11, no. 27 (2020): 7170–76. http://dx.doi.org/10.1039/d0sc01914c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Mao, Wenbin, and Chen Zhu. "Efficient synthesis of multiply substituted butenolides from keto acids and terminal alkynes promoted by combined acids." Organic Chemistry Frontiers 4, no. 6 (2017): 1029–33. http://dx.doi.org/10.1039/c6qo00820h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Šnajdr, Ivan, Jan Pavlík, Radan Schiller, Jiří Kuneš, and Milan Pour. "Pentenolide Analogues of Antifungal Butenolides: Strategies Towards 3,6-Disubstituted Pyranones and Unexpected Loss of Biological Effect." Collection of Czechoslovak Chemical Communications 72, no. 11 (2007): 1472–98. http://dx.doi.org/10.1135/cccc20071472.

Full text

Abstract:

Pentenolide analogues of antifungal 3,5-disubstituted butenolides were prepared by oxidative cyclization of 2-(substituted aryl)hex-5-enoic acids as the key step. Given the limitations of the methodology, another approach to the title compounds based on the Pd-catalyzed carbonylative lactonization of 4-iodo-3-en-1-ols was developed, and the carbonylation conditions were optimized. While the former sequence allows only the introduction of a substituted methyl at C6, pyranones bearing a range of various C-substituents at C6 can be prepared by the latter. Somewhat surprisingly, unlike the corresp

APA, Harvard, Vancouver, ISO, and other styles

34

Asif, Husain. "Anthelmintic activity evaluation of 2-arylidene-4-(biphenyl-4-yl) but-3-en-4-olides." Journal of Biological Engineering Research and Review 2, no. 2 (2015): 07–09. https://doi.org/10.5281/zenodo.15291717.

Full text

Abstract:

<strong>Abstract</strong>: In vitro anthelmintic activity of a series of synthetic butenolides (1-7), 2-arylidene-4-(biphenyl-4-yl)but-3-en-4-olides, against two species of earth worms i.e. Pheretima posthuma and Perionyx excavatus was determined. The bioactivity was determined by noting the mean paralyzing and death times of the worms at concentration 2mg/mL. All the tested compounds showed moderate to good anthelmintic activity; two compounds, 1 and 5, were found to be potent against Perionyx excavatus and Pheretima posthuma, respectively. These butenolides exhibited significant anthelmintic

APA, Harvard, Vancouver, ISO, and other styles

35

Vieira, Lucas C. C., Bianca T. Matsuo, Lorena S. R. Martelli, Mayara Gall, Marcio W. Paixão та Arlene G. Corrêa. "Asymmetric synthesis of new γ-butenolides via organocatalyzed epoxidation of chalcones". Organic & Biomolecular Chemistry 15, № 29 (2017): 6098–103. http://dx.doi.org/10.1039/c7ob00165g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Yuan, Shu-Pei, Pei-Hao Dou, Yun-Qing Jia, et al. "Catalytic asymmetric aromatizing inverse electron-demand [4+2] cycloaddition of 1-thioaurones and 1-azaaurones." Chemical Communications 58, no. 4 (2022): 553–56. http://dx.doi.org/10.1039/d1cc06357j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Shibata, Kaname, та Naoto Chatani. "Rhodium-catalyzed regioselective addition of the ortho C–H bond in aromatic amides to the C–C double bond in α,β-unsaturated γ-lactones and dihydrofurans". Chemical Science 7, № 1 (2016): 240–45. http://dx.doi.org/10.1039/c5sc03110a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Rainoldi, Giulia, Alessandro Sacchetti, Alessandra Silvani, and Giordano Lesma. "Organocatalytic vinylogous Mannich reaction of trimethylsiloxyfuran with isatin-derived benzhydryl-ketimines." Organic & Biomolecular Chemistry 14, no. 32 (2016): 7768–76. http://dx.doi.org/10.1039/c6ob01359g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Zhou, Shanshan, Nicolas R. Malet, Lijiang Song, Christophe Corre, and Gregory L. Challis. "MmfL catalyses formation of a phosphorylated butenolide intermediate in methylenomycin furan biosynthesis." Chemical Communications 56, no. 92 (2020): 14443–46. http://dx.doi.org/10.1039/d0cc05658h.

Full text

Abstract:

MmfL forms phosphorylated butenolides that undergo dephosphorylation and rearrangement to yield methylenomycin furan (MMF) signalling molecules that induce antibiotic production in Streptomyces coelicolor.

APA, Harvard, Vancouver, ISO, and other styles

40

Zhao, Mi-Na, Ying Zhang, Ning Ge, et al. "A Rh(iii)-catalyzed regioselective intermolecular oxa-Pauson–Khand reaction of alkynes, arylboronic acids and CO to form butenolides." Organic Chemistry Frontiers 7, no. 5 (2020): 763–67. http://dx.doi.org/10.1039/c9qo01486a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Manna, Madhu Sudan, and Santanu Mukherjee. "Remarkable influence of secondary catalyst site on enantioselective desymmetrization of cyclopentenedione." Chem. Sci. 5, no. 4 (2014): 1627–33. http://dx.doi.org/10.1039/c3sc53102c.

Full text

Abstract:

An efficient, robust and highly enantioselective catalytic desymmetrization of 2,2-disubstituted cyclopentene-1,3-diones is developed via direct vinylogous nucleophilic addition of deconjugated butenolides.

APA, Harvard, Vancouver, ISO, and other styles

42

Lee, Kwan Hee, and Harold W. Moore. "Unusual Transformation of Cyclobutenediones into Butenolides." Journal of the Korean Chemical Society 47, no. 3 (2003): 229–36. http://dx.doi.org/10.5012/jkcs.2003.47.3.229.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Syah, Yana M., Emilio L. Ghisalberti, Brian W. Skelton, and Allan H. White. "Three New Sesquiterpene Butenolides fromEremophilaSpecies." Journal of Natural Products 60, no. 1 (1997): 49–51. http://dx.doi.org/10.1021/np9605910.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Cortez, Diógenes A. G., João B. Fernandes, Paulo C. Vieria, et al. "Meliacin butenolides from Trichilia estipulata." Phytochemistry 49, no. 8 (1998): 2493–96. http://dx.doi.org/10.1016/s0031-9422(98)00234-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Kuster, Ricardo M., Walter B. Mors, and Hildebert Wagner. "Cyclohexenyl butenolides from Phyllanthus klotzschianus." Biochemical Systematics and Ecology 25, no. 7 (1997): 675. http://dx.doi.org/10.1016/s0305-1978(97)00061-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Pissurno, Ana Paula da Rocha, and Rosangela da Silva de Laurentiz. "Synthesis of 4-azo-butenolides." Synthetic Communications 47, no. 20 (2017): 1874–78. http://dx.doi.org/10.1080/00397911.2017.1354380.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Tuchinda, Patoomratana, Jinda Udchachon, Vichai Reutrakul, et al. "Bioactive butenolides from Melodorum fruticosum." Phytochemistry 30, no. 8 (1991): 2685–89. http://dx.doi.org/10.1016/0031-9422(91)85123-h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Klapper, Martin, Kevin Schlabach, André Paschold, et al. "Biosynthesis of Pseudomonas ‐Derived Butenolides." Angewandte Chemie International Edition 59, no. 14 (2020): 5607–10. http://dx.doi.org/10.1002/anie.201914154.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Lin, Shaw-Tao, Yuch-Hsiung Kuo, Eng-Chi Wang, and Wen-Chung Lin. "Mass Spectra of Substituted Butenolides." Journal of the Chinese Chemical Society 44, no. 2 (1997): 129–32. http://dx.doi.org/10.1002/jccs.199700021.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Klapper, Martin, Kevin Schlabach, André Paschold, et al. "Biosynthesis of Pseudomonas ‐Derived Butenolides." Angewandte Chemie 132, no. 14 (2020): 5656–59. http://dx.doi.org/10.1002/ange.201914154.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!