| Abstract: | The results are given of a chemical study of the polyphenol composition of various organs ofPersica vulgaris Mill. The material of investigation consisted of the dried leaves, flowers, the bark of the roots and of the stems, the fruit, and the skin of the fruit of the peach collected from the experimental plots of the R. R. Shreder Scientific-Research Institute of Horticulture and Viniculture of the Uzbek SSR. Seventeen polyphenols have been isolated, of which 14 have been characterized completely. The amounts of total polyphenols in the skin of the fruit of 10 varieties have been determined. Kaempferol 3-O- -D-diglucopyranoside and quercetin 3-O--D-diglucopyranoside have been isolated from peach leaves for the first time, and (—)-epicatechin gallate from the bark of the stems. The position of the sugar substituent in persicoside has been established: it is hesperitin 5-O--D-glucopyranoside.Institute of Bioorganic Chemistry, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 316–321, May–June. 1979. |
