Related Experiment Video
Updated: Jun 27, 2026
Transient Expression in Nicotiana Benthamiana Leaves for Triterpene Production at a Preparative Scale
Published on: August 16, 2018
A new naturally acetylated triterpene saponin from Nigella sativa
Bhupendra Kumar Mehta1, Prabha Mehta, Meenal Gupta
1School of Studies in Chemistry and Biochemistry, Vikram University, Ujjain 456 010, M.P., India. bkmehta11@yahoo.com
Abstract:
A new glycosylated triterpene 1 was identified as 3-O-[beta-D-xylopyranosyl-(1-->3)-alpha-l-rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl]-11-methoxy-16-hydroxy-17-acetoxy hederagenin from an ethanolic extract of seeds of Nigella sativa Linn. Identification of the naturally acetylated saponin was based on chemical and spectroscopic analyses including FABMS, (1)H, (13)C, and 2D NMR and DEPT. The saponin was a penta hydroxy pentacyclic triterpene, in which one hydroxyl group was acetylated and other one was methylated naturally.
Related Concept Videos
01:25Esters to Carboxylic Acids: Saponification
The reaction requires a base in stoichiometric amounts, which participates in the reaction and is not regenerated later. So, the base acts as a...
01:11Nomenclature of Carboxylic Acid Derivatives: Amides and Nitriles
The IUPAC and common names of amides are derived from the parent carboxylic acid, by replacing the suffix “oic acid” and “ic acid,” respectively, with “amide.” In the following example, the IUPAC name ethanamide is derived from ethanoic acid, and the common name, acetamide, is obtained from acetic acid.
01:08Nitriles to Carboxylic Acids: Hydrolysis