Water Extract of <i>Tamarindus Indica</i> Seed Ash: An Agro-Waste Green Medium for One-Pot Three-Component Approach for the Synthesis of 4<i>H</i>-Pyran Derivatives

Halder, Bipasa; Maity, Himadri Sekhar; Banerjee, Flora; Kachave, Aditya Balasaheb; Nag, Ahindra

doi:10.1080/10406638.2020.1858885

Cited by 11 publications

(8 citation statements)

References 73 publications

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“…4H-pyran derivatives are widely distributed in natural compounds [ 61 ]. They are characterized by numerous biological and pharmaceutical activities such as antifungal, antiviral, antioxidant, antileishmanial, antiallergic, antibacterial, hypotensive, anticoagulant, diuretic, and antitumor activities [ 62 , 63 ].…”

Section: Discussionmentioning

confidence: 99%

Phytochemical Profiling of Sambucus nigra L. Flower and Leaf Extracts and Their Antimicrobial Potential against Almond Tree Pathogens

Sánchez-Hernández

Balduque-Gil

García

et al. 2023

IJMS

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Despite extensive research on the chemical composition of elderberries and their numerous uses in pharmaceutical, beverage, and food production, there is still a lack of knowledge about Sambucus nigra leaves and flowers’ antimicrobial activity against plant pathogens. In this study, the phytoconstituents of their aqueous ammonia extracts were first characterized by infrared spectroscopy and gas chromatography–mass spectrometry. The major phytocompounds identified in the flower extract were octyl 2-methylpropanoate; 3,5-dihydroxy-6-methyl-2,3-dihydropyran-4-one; propyl malonic acid; adenine; and 1-methyl-2-piperidinemethanol. Concerning the leaf extract, 1,6-anhydro-β-D-glucopyranose; oleic acid; 2,1,3-benzothiadiazole; 2,3-dihydro-benzofuran; and 4-((1E)-3-hydroxy-1-propenyl)-2-methoxyphenol and other phenol derivatives were the main constituents. The potential of the extracts to act as bioprotectants was then investigated against three almond tree pathogens: Diaporthe amygdali, Phytophthora megasperma, and Verticillium dahliae. In vitro tests showed higher activity of the flower extract, with EC90 values in the 241–984 μg·mL−1 range (depending on the pathogen) vs. 354–1322 μg·mL−1 for the leaf extract. In addition, the flower extract led to full protection against P. megasperma at a dose of 1875 μg·mL−1 in ex situ tests on artificially-infected excised almond stems. These inhibitory concentrations were lower than those of commercial fungicides. These findings suggest that S. nigra aerial organs may be susceptible to valorization as an alternative to synthetic fungicides for the protection of this important crop.

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Section: Discussionmentioning

confidence: 99%

Phytochemical Profiling of Sambucus nigra L. Flower and Leaf Extracts and Their Antimicrobial Potential against Almond Tree Pathogens

Sánchez-Hernández

Balduque-Gil

García

et al. 2023

IJMS

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“…and extracted in ethyl acetate (3×10 mL). The combined organic layer dried over sodium sulphate and concentrated under reduced pressure to afford solid compound Pyrano[2,3-c]Pyrazoles (95 % yield) This synthesized product characterized with the help of FT-IR, 1 H NMR and 13 C NMR spectroscopic technique.…”

Section: Synthesis Of Pyrano[23-c]pyrazolesmentioning

confidence: 99%

One‐Pot Multicomponent Synthesis of Pyrano[2,3‐c]pyrazoles Facilitated by Novel Biocatalyst under Ambient Reaction Conditions

Kadam,

Deshmukh,

Kamble

2024

ChemistrySelect

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This study depicts the synthesis of a novel biocatalyst Cluster Fig Ash (CFA) from cluster fig. XRD, FT‐IR, EDX, TGA, BET and SEM techniques were used to characterize the synthesized CFA catalyst. The one‐pot multicomponent synthesis of pyrano[2,3‐c]pyrazoles derivatives under ambient conditions was utilised to test the catalytic activity of this synthesized CFA biocatalyst. It was found that an easy, reliable, and extremely efficient method has been proposed to synthesise pyrano[2,3‐c]pyrazoles derivatives using one‐pot, multicomponent reaction involving aldehyde, malononitrile, ethylacetoacetate, and Hydrazine monohydrate.

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“…A water extract of tamarin dus indica seed ash (WETSA) was used as a reaction media in a multicomponent reaction including carbonyl compound of C-H activated, malononitrile and aryl aldehyde which acts as a basic catalyst. 22…”

Section: Fig 17 Synthesis Of 2-amino-4h-pyran-3-carbonitrile Derivativementioning

confidence: 99%

Pyran Heterocyclic Compound as the Prosperous Scaffolds for Biological Sensor (A-Review)

Suthar¹,

Kumbhani²,

Bhatt³

2021

Orient. J. Chem

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2H-pyrans and 4H-pyrans, which are six-membered heterocyclic compounds containing oxygen, are a class of biologically dynamic natural and synthetic products that played a key character in bioorganic chemistry and continue to pique attention. Pyrans and their analogues have a prominent position in bioorganic chemistry because of their numerous applications. This analysis explored the most recent advances, as well as the discovery of new methodologies and the diverse biological activities of pyran analogues.

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Water Extract of Tamarindus Indica Seed Ash: An Agro-Waste Green Medium for One-Pot Three-Component Approach for the Synthesis of 4H-Pyran Derivatives

Cited by 11 publications

References 73 publications

Phytochemical Profiling of Sambucus nigra L. Flower and Leaf Extracts and Their Antimicrobial Potential against Almond Tree Pathogens

Phytochemical Profiling of Sambucus nigra L. Flower and Leaf Extracts and Their Antimicrobial Potential against Almond Tree Pathogens

One‐Pot Multicomponent Synthesis of Pyrano[2,3‐c]pyrazoles Facilitated by Novel Biocatalyst under Ambient Reaction Conditions

Pyran Heterocyclic Compound as the Prosperous Scaffolds for Biological Sensor (A-Review)

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