Further anthocyanins from flowers of Crocus antalyensis (Iridaceae)

As a part of a continuing chemotaxonomic survey of pigments in Crocus two new and three known anthocyanins have been isolated from the blue perianth segments of Crocus antalyensis [Mathew, B., The Crocus. B.T. Batsford, London]. The novel anthocyanins were identified as delphinidin 3-O-(beta-D-glucopyranoside)-5-O-(6-O-malonyl-beta-D-glucopyranoside and petudin 3,7-di-O-(beta-D-glucopyranoside. Further 3,7-di-O-beta-D-glucoside of delphinidin was isolated together with two minor components, 3,5-di-O-beta-D-glucosides of delphinidin and petunidin. The complete structural determination of the compounds was achieved by use of 1D and 2D NMR techniques and other spectral evidence. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.