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167340

Phenolic constituents from the leaves of Tylophora indica and their antioxidant activities

Article

Last updated: 22 Jan 2023

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Abstract

Four flavonoids; kaempferol-3-O-galactoside (trifolin) [1], quercetin-3-O-galactoside (hyperoside) [2], quercetin-3-O- glucoside (isoquercitrin) [3] and kaempferol-3-O-rutinoside [4] together with chlorogenic acid [5] and chlorogenic acid methyl ester [6] have been isolated and purified for the first time from the leaves of Tylophora indica by HPLC. The structures were elucidated by the application of MS, IR, UV, ID- and 2D-NMR spectroscopic analyses and by comparison with literature data. All compounds 1-6 were found to exhibit antioxidant effects, based on the scavenging activity of the stable 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical.

DOI

10.21608/zjps.2011.167340

Authors

First Name

Mohammed

Last Name

Hussein

MiddleName

-

Affiliation

Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt

Email

mohammed.hussein@yahoo.com

City

-

Orcid

-

First Name

Ehab

Last Name

Mostafa

MiddleName

-

Affiliation

Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt

Email

ehab.mostafa@yahoo.com

City

-

Orcid

-

First Name

El-Sayed

Last Name

El-Ghaly

MiddleName

-

Affiliation

Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt

Email

el-sayed.el-ghaly@yahoo.com

City

-

Orcid

-

First Name

Ehab

Last Name

Ragab

MiddleName

-

Affiliation

Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt

Email

ehab.ragab@yahoo.com

City

-

Orcid

-

Volume

20

Article Issue

1

Related Issue

23544

Issue Date

2011-06-01

Receive Date

2011-03-27

Publish Date

2011-06-01

Page Start

22

Page End

29

Print ISSN

1110-5089

Online ISSN

2356-9786

Article File

ZJPS_Volume 20_Issue 1_Pages 22-29.pdf

PDF . 2.6MB

Link

https://zjps.journals.ekb.eg/article_167340.html

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https://zjps.journals.ekb.eg/service?article_code=167340

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Original Article

Type Code

862

Publication Type

Journal

Publication Title

Zagazig Journal of Pharmaceutical Sciences

Publication Link

https://zjps.journals.ekb.eg/

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Article

Created At

22 Jan 2023