Coumarins and Iridoids from Crucianella Graeca, Cruciata Glabra, Cruciata Laevipes and Cruciata Pedemontana (Rubiaceae) Maya Iv
Coumarins and Iridoids from Crucianella graeca, Cruciata glabra, Cruciata laevipes and Cruciata pedemontana (Rubiaceae) Maya Iv. Mitova3, Mincho E. Anchevb, Stefan G. Panev3, Nedjalka V. Handjieva3 and Simeon S. Popov3 a Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria h Institute of Botany, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria Z. Naturforsch. 51c, 631-634 (1996); received May 23/July8 , 1996 Rubiaceae, Crucianella, Cruciata, Coumarins, Iridoids The coumarin and iridoid composition of Crucianella graeca, Cruciata glabra, Cruciata laevipes and Cruciata pedemontana has been studied. Daphnin and daphnetin glucoside do minated in C. glabra along with low concentrations of daphnetin, deacetylasperulosidic acid and scandoside. In C. laevipes and C. pedemontana were found the same coumarin glucosides along with six iridoid glucosides. In Crucianella graeca were found ten iridoid glucosides. Introduction Thirteen pure compounds (Fig. 1) were isolated and identified by 'H and 13C NMR spectra (Ta Crucianella L. and Cruciata Mill. (Rubiaceae) ble I) and comparisons with authentic samples as are represented each by three species in the Bul the coumarins, daphnin (1), daphnetin glucoside garian flora (Ancev, 1976, 1979). They are mor (2) and daphnetin (3) (Jevers et al., 1978) and the phologically well differentiated and all except iridoids, deacetylasperulosidic acid (4), scandoside Cruciata glabra (L.) Ehrend., do not suggest seri (5), asperuloside (6), asperulosidic acid (7), methyl ous taxonomic problems. The coumarins, scopo- ester of deacetylasperulosidic acid (8), daphyllo letin, umbelliferone and cruciatin and the iridoid side (9), geniposidic acid (10), 10-hydroxyloganin glucosides monotropein, asperuloside and au- (11), deacetylasperuloside (12) and iridoid V3 (13) cubin, were found in some Cruciata species (Bo (Boros and Stermitz, 1990; El-Naggar & Beal, risov, 1967, 1974; Borisov and Borisyuk, 1965; Bo 1980).
[Show full text]