Isolation Of Stigmasterol from the leaves of Kopsia Singapurensis RIDL (IR)

Lee Yean Shan, Ahmad Kartini, Awang Khalijah, Tan Siow Ping, Nafiah Mohd Azlan,

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Type :	conference_item
Subject :	QD Chemistry
Main Author :	Lee Yean Shan, Ahmad Kartini, Awang Khalijah, Tan Siow Ping, Nafiah Mohd Azlan,
Title :	Isolation Of Stigmasterol from the leaves of Kopsia Singapurensis RIDL (IR)

Year of Publication :	2012
PDF Full Text :	Login required to access this item.

Abstract :

The isolation and purification of the leaves of Kopsia singapurensisRidl. (Apocynaceae) revealed the presence of steroids, terpenes, and alkaloids. Stigmasterol 1 was isolated from the hexane crude extract of the leaves of this species. This phytochemical study involves extraction, separation by using various chromatographic methods and structural determination by spectroscopic technique such as IR, NMR including 1D-NMR (1H, 13C and DEPT), 2D-NMR (COSY, NOESY, HMQC/HSQC, and HMBC) and GCMS, involving also comparison with data from the literature

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