Jaitak, V and Kaul , V K and ----,, Himlata and Kumar, Neeraj and Singh , Bikram and Dhar, J and Sharma, O P (2010) New Hopane Triterpenes and Antioxidant Constituents from Potentilla fulgens. Natural Product Communication, 5 (10). pp. 1561-1566.

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Abstract

Phytochemical investigation of the aerial parts of Potentilla fulgens L. led to the isolation of two new triterpenes, potentene A (1) and potentene B (2). In addition, three known compounds afzelchin-4 alpha -> 8 ''-catechin (3), epiafzelchin (4) and rutin (5) were isolated. The structures of all these compounds were elucidated by extensive spectroscopic and chemical evidence. Compounds 3, 4, and 5 exhibited significant 1,1,diphenyl-2-picrylhydrazyl radical scavenging activity, with IC(50) values of 1.21, 2.88 and 5.20 mg/mL, respectively; the known standard antioxidant, vitamin C, had a value of 0.44 mg/mL.

Item Type:	Article
Uncontrolled Keywords:	Potentilla fulgens; Rosasceae; triterpenes; potentene A; potentene B; DPPH; antioxidant activity TANNINS; ELLAGITANNIN; AGRIMONIIN
Subjects:	Natural Product Chemistry
Divisions:	UNSPECIFIED
Depositing User:	Dr. Aparna Maitra Pati
Date Deposited:	30 Dec 2011 03:20
Last Modified:	10 Feb 2012 07:46
URI:	http://ihbt.csircentral.net/id/eprint/641

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