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Flavonoids and arbutin from Turnera diffusa.
Sonia Piacente1, Ely E S Camargo, Aurelia Zampelli
1Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, Via Ponte don Melillo, 84084, Fisciano, SA, Italy.
Zeitschrift Fur Naturforschung. C, Journal of Biosciences
|February 4, 2003
Summary
Phytochemical analysis of Turnera diffusa revealed a new flavone glycoside and five known flavonoids. These compounds were identified using advanced spectroscopic and chromatographic techniques.
Area of Science:
- Phytochemistry
- Natural Product Chemistry
- Pharmacognosy
Background:
- Turnera diffusa, commonly known as Damiana, is a plant with a history of traditional medicinal use.
- Understanding its chemical constituents is crucial for validating its therapeutic potential.
Purpose of the Study:
- To conduct a detailed phytochemical investigation of Turnera diffusa aerial parts.
- To isolate and characterize novel and known compounds from the plant extract.
Main Methods:
- Extraction and isolation of compounds using chromatographic techniques.
- Structure elucidation employing 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy.
- Mass spectrometry (ES-MS) and Ultraviolet (UV) spectroscopy for structural confirmation.
Main Results:
- Isolation of a previously undescribed flavone glycoside.
- Identification of five known flavonoids and p-arbutin.
- Comprehensive structural data obtained through NMR, ES-MS, and UV analyses.
Conclusions:
- The study successfully identified a new flavone glycoside and several known flavonoids in Turnera diffusa.
- The findings contribute to the phytochemical knowledge of Turnera diffusa, supporting its ethnobotanical uses.