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Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Published on: May 12, 2019

Two pregnane oligoglycosides from Marsdenia roylei.

Versha Gupta¹, Alok Kumar, Anakshi Khare

¹Department of Chemistry, Lucknow University, Lucknow 226007, India.

Natural Product Research

|September 8, 2009

Summary

Two pregnane oligoglycosides, rocinine and marsdinine, were isolated from Marsdenia roylei. Their chemical structures were determined using advanced spectroscopic and chemical methods.

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Arabidopsis thaliana Polar Glycerolipid Profiling by Thin Layer Chromatography (TLC) Coupled with Gas-Liquid Chromatography (GLC)

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Published on: March 18, 2011

Area of Science:

Natural Product Chemistry
Phytochemistry
Organic Chemistry

Background:

Marsdenia roylei is a plant species known for its potential medicinal properties.
Oligoglycosides are complex carbohydrates with significant biological activities.

Purpose of the Study:

To isolate and elucidate the structures of novel pregnane oligoglycosides from Marsdenia roylei.
To contribute to the understanding of the chemical constituents of this plant species.

Main Methods:

Isolation of compounds using chloroform soluble extract.
Structure elucidation employing Mass Spectrometry (MS).
Nuclear Magnetic Resonance (NMR) spectroscopy including (1)H NMR, (13)C NMR, (1)H-(1)H COSY, HSQC, and TOCSY.
Chemical degradation and derivatisation techniques.

Main Results:

Identification and structural characterization of two pregnane oligoglycosides: rocinine (1) and marsdinine (11).
Confirmation of their structures through comprehensive spectroscopic analysis and chemical transformations.

Conclusions:

The study successfully identified two new pregnane oligoglycosides from Marsdenia roylei.
The detailed structural information provides a basis for further pharmacological investigations.