Flaccidinin and oxoflaccidin, two phenanthrene derivatives of the orchid coelogyne flaccida
作者:P.L. Majumder*、D.C. Maiti
DOI:10.1016/0031-9422(89)80137-2
日期:1989.1
Abstract Flaccidinin, a new phenanthropyrone derivative, and oxoflaccidin, the corresponding 9,10-dihydro compound, were isolated from the orchid Coelogyne flaccida which also yielded the previously reported 9,10-dihydrophenanthropyran derivatives flaccidin and imbricatin. The structures of flaccidinin and oxoflaccidin were established from spectral evidence and by chemical correlation.