The structure of diptocarpiline and diptocarpidine

Summary 1. From the epigeal part of the plantDipthychocarpus strictus collected in the flowering period close to Dzhilga, Chimkent oblast, the new alkaloids diptocarpiline and diptocarpidine have been isolated.2. In a study of some chemical transformations and the spectral characteristics, it has been established that diptocarpiline has the structure of 6-methylsulfinyl-6-methylthio-N,N-di-n-hexylurea, and diptocarpidine that of 6,6--di(methylsulfinyl)-N,N-di-n-hexylurea.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 223–226, March–April, 1978.     

Alkaloids ofConvolvulus subhirsutus

The total alkaloids of the roots ofConvolvulus subhirsutus collected in the period of vigorous growth close to the village of Dzhilga, Chimkent province, have been studied. From the phenolic fraction of the total alkaloids of this species of plant we have isolated phyllalbine and convolidine for the first time. From the nonphenolic fraction of the combined bases we isolated convolvine, which has been found previously, the new alkaloid confoline, and an unidentified base (III). On the basis of spectral characteristics and some spectral transformations it has been established that confoline has the structure of (+)-N-formylconvolvine. Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 672–676, September–October, 1980.