| Abstract: | From the herbage ofStachys atherocalyx C. Koch, a new flavonoid glycoside has been isolated — acetylspectabiflaside, with mp 237–242°C. On the basis of acetylation, the formation of a hydroxamic acid, alkaline, and enzymatic hydrolysis, and oxidative degradation, and also the results of UV, IR, and PMR spectroscopy, the structure of 4 ,5,7,8-tetrahydroxy-3-methoxyflavone 7-O-{acetyl-O- -D-glucopyranosyl-(1 2)--D-mannopyranoside]} has been proposed for acetylspectrabiflaside.Khar'kov Scientific-Research Institute of Pharmaceutical Chemistry. Institute for the Advanced Training of Doctors, Minsk. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 187–189, March–April, 1982. |
