Structure and configuration of cauferinin

Summary From the roots ofFerula conocaula Korov. a terpenoid coumarin of the iresane series with three hydroxy groups has been isolated which has been called cauferinin.On the basis of the result of a study of its chemical and spectral characteristics and its conversion into cauferin, the structure and relative configuration (I) has been put forward for cauferinin.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Orginal article translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 151–154, March–April, 1979.     

Structure and configuration of stenanzine

From the total alkaloids isolated by chloroform extraction of the epigeal part ofRhinopetalum stenantherum a new base has been isolated — stenanzine — with mp 203–205°C, [α]_D-44°, C₂₇H₄₃NO₃. On the basis of a study of the IR, NMR, and mass spectra of stenanzine and its conversion products the configuration and structure of 3β,23α-dihydroxy-5α-veratr-12-enin-6-one have been established for this alkaloid.