C-glycosides of the leaves of parkinsonia aculeata

摘要: Abstract The leaves of Parkinsonia aculeata have been found to contain three C-glycosides. Two, could be separated by fractional crystallization after preliminary lead salt purification, but preparative paper chromatography was effective for the separation all three. first ( epi-orientin ) is a C-glucoside luteolin and resembles oreintin in composition, chemical reactions UV IR spectra differs m.p. rotation may an epimer orientin. second Parkinsonin-A 5-O-methylluteolin closely related third Parkinsonin-B 5,7-di-O-methylluteolin has stereochemistry epi-orientin.