Isolation and Characterization of Polyphenols in Seed of Litchi chinensis
Objective: To study the chemical constituents of polyphenols in seed of Litchi chinensis. Methods: The seeds of Litchi chinensis were extracted by 65% ethanol, then the compounds were separated by repeated silica gel, polyamide and preparative TLC. The structures of polyphones isolated were identified by analysis of their spectral datas and chemical properties. Results: Four poly-phones compounds were isolated as protocatechuic aldehyde ( Ⅰ ), protocatechuic acid ( Ⅱ ), daucosterol ( Ⅲ ) and ( - ) -epicatichin (Ⅳ). Conclusions: Compounds Ⅰ , Ⅲ and Ⅳ are isolated from this plant for the first time.
Seed of Litchi chinensisProtocatechuic aldehydeProtocatechuic acidDaucosterol( - ) -epicatichin