Chemical constituents in seed of litchi chinensis of hypoglycemic activity site(I)
Objective: To study the chemical construction of Hypoglycemic activity parts of litchi seeds. Methods: Using the method of determin α-glucosidase activity on activities of extract parts of lithchi seeds. The activity are isolated and purified by various chromatographic means. Their structures are elucidated on basis of spectrum analysis and documents. Results: Eight constituents are isolated and identified from the hypoglycemic activity parts of litchi seeds. They are identifiedas: pinocembrin-7-neohesperi-doside(1), onychin(2), quercetin(3), protocatechuicaldehyde(4), proto-catechuic(5), D-1-0-methylmyo-inositol(6), dancosterol(7), β-sitostero(8). Conclusions: Compound 1, 3 is obtained from hypoglycemic activity parts of litchi seeds for the first time.