Stereochemistry of terpenoid coumarins. Crystal and molecular structure of samarcandin

The absolute configuration of samarcandin has been established on the basis of the results of a complete X-ray investigation. The absolute configurations of conferol, moscharol, badrakemin, and coladonin, and the absolute configurations of feshurin, nevskin, and isosamarcandin have been refined.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek, SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 184–190, March–April, 1985.     

Modification of the sesquiterpene lactone arteannuin B and antimicrobial activities of the products obtained

A number of amino derivatives have been synthesized from the sesquiterpene lactone arteannuin B, and quaternary salts have been obtained from them with alkyl halides. The results are given of a study of the antimicrobial activities of the modified derivatives.Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 714–717, September–October, 1997.