Alumina Aspergillus eclrinulatus Calliphyllin Careaborin Chemical Constituents Chromatography Cross Dendrobium fimbriatum and Cymbidium uloifolium Evaporation Hydroxy Leaves of Callicarpa Orchidaceae plants Petroleum Randia longiflora Randilongin Reactions of 4-hydroxycoumarin Rhus parviflora Stereochemistry Terpenoids The possible transformations of the tautomeric forms acetylacetonc leads to the fonnation of a novel bicyclo compound isolation macrophylla polarities pyran reactions synthesis temperature