Acylated and Non-Acylated Flavonol Monoglycosides from the Indian Minor Spice Nagkesar (Mammea longifolia)

Jaganmohan Rao, L. and Yada, Hiroshi and Ono, Hiroshi and Yoshida, Mitsuru (2002) Acylated and Non-Acylated Flavonol Monoglycosides from the Indian Minor Spice Nagkesar (Mammea longifolia). Journal of Agricultural and Food Chemistry, 50. pp. 3143-3146.

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Abstract

A methanol extract of nagkesar (buds of Mammea longifolia), which showed strong radical scavenging activity, yielded 13 compounds by separations using column chromatography and HPLC. Structure elucidation of these compounds was achieved by 1H and 13C NMR, including DQF-COSY, TOCSY, DEPT, HMQC, HSQC, and HMBC. They include two new compounds, quercetin 3-O-2",4" di- E-pcoumaroyl)-alpha-L-rhamno-pyranoside and quercetin 3-O-(3",4"-di- E-p-coumaroyl)-R-L-rhamnopyranoside,along with known compounds kaempferol, quercetin, the isopropylidenedioxy derivative of shikimic acid, kaempferol 3-O-(2",4"-di- E- p-coumaroyl)-R-L-rhamnopyranoside, kaempferol 3-O-(3",4"- di- E- p-coumaroyl)-alpha-L-rhamnopyranoside, kaempferol 3- O-alpha-L-rhamnopyranoside, quercetin 3- O-RL- rhamnopyranoside, shikimic acid, kaempferol 3- O-‚-D-glucopyranoside, quercetin 3- O-‚-Dglucopyranoside, and ‚-sitosterol 3- O-‚-D-glucopyranoside.

Item Type:	Article
Uncontrolled Keywords:	Mammea longifolia; Guttiferae; nagkesar; radical scavenging activity; flavonoids; quercetin 3-O-(2",4"-di-E-p-oumaroyl)-alpha-L-rhamnopyranoside; quercetin 3-O-(3",4"-di- E- p-coumaroyl)-alpha-L-rhamnopyranoside;shikimic acid derivative
Subjects:	600 Technology > 08 Food technology > 30 Spices/Condiments
Divisions:	Plantation Products Spices and Flavour Technology
Depositing User:	Food Sci. & Technol. Information Services
Date Deposited:	08 Jun 2005
Last Modified:	30 Apr 2012 09:18
URI:	http://ir.cftri.res.in/id/eprint/61

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