Structures of withametelin and isowithametelin, withanolides of leaves
作者:Subhash C. Sinha、Sujata Kundu、Rakesh Maurya、Anil B. Ray、Yoshiteru Oshima、Anjana Bagchi、Hiroshi Hikino
DOI:10.1016/s0040-4020(01)80076-4
日期:1989.1
isowithametelin, two novel hexacyclic withanolides isolated from the leaves of Datura metel, have been established as 1 and 2 respectively, on the basis of detailed spectral and chemical evidences. The facile transformation of withametelin to a ring A aromatic withanolide and some other interesting chemical transformations are described.