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Alkaloid Profile of Bulgarian Species from Genus Senecio L. Veselin Christova* and Liuba Evstatievab a Institute of Organic Chemistry with Centre of Phyto- chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria. E-mail: christov@orgchm.bas.bg b Institute of Botany Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria * Author for correspondence and reprint requests Z. Naturforsch. 58c, 300Ð302 (2003); received Decem- ber 11, 2002/January 14, 2003 Twenty-seven pyrrolizidine alkaloids were identified by a detailed phytochemical study and GC/MS analysis on

-9422(97)00009-5. http://dx.doi.org/10.1016/S0031-9422(97)00009-5 [6] Kisiel, W., & Zielińska, K. (2000). Sesquiterpenoids and phenolics from Lactuca perennis. Fitoterapia, 71, 86–87. DOI: 10.1016/S0367-326X(99)00112-4. http://dx.doi.org/10.1016/S0367-326X(99)00112-4 [7] Kostova, N., Christov, V., Cholakova, M., Nikolova, E., & Evstatieva, L. (2006). Pyrrolizidine alkaloids from Bulgarian species of the genus Senecio. Journal of the Serbian Chemical Society, 71, 1275–1280. DOI: 10.2298/JSC0612275K. http://dx.doi.org/10.2298/JSC0612275K [8] Mandić, B., Gođevac, D., Beškoski, V., Simić

and CH 2 ), and 1.5 U eq (C) (for methyl group), O—H distances are 0.82 Å with U iso (H) values of 1.5 U eq (O). Discussion The genus Senecio is the largest and most complex genus in the Asteraceae and include more than 1500 species with a worldwide distribution [ 1 ]. Aerial parts of several species of Senecio natives of the north of Chile are widely employed in the folk medicine as remedy for the altitudinal sickness [ 2 ], [ 3 ], [ 4 ]. In a continuation of a phytochemical research on Senecio species, which grow on the western flank of the Andes in

. Inform. Bot. Ital. 40(2): 258. Iamonico, D. & Managlia, A. 2014: Lectotypification of the Bertoloni’s names in the genus Senecio L. (Asteraceae). Pl. Biosystems 149(1): 48−53. doi: http://dx.doi.org/10.1080/11263504.2012.753956 Iamonico, D. & Hjertson, M. 2015: Lectotypification of Linnaean names in Tussilago (Asteraceae). Botanica Serbica 39(1): 45−48. Iamonico, D. & Peruzzi, L. 2016: Typification of Centaurea aspera, C. nudicaulis and C. uniflora (Asteraceae). Taxon 65(1): 163-165. http://dx.doi.org/10.12705/651 Iamonico, D., Guarino, R., Ilardi, V. & Pignatti, S

-ground aerial parts of Senecio lyratus, an anti-fungal and anti-bacterial active compound was isolated and identified as ß-sito- sterol by spectroscopic analysis. Introduction The genus Senecio (Asteraceae) has been widely investigated and nearly all species contain pyrroli- zidine alkaloids (PA) as the most characteristic metabolites (Bull, 1968; Bick, 1985; Mattocks, 1986; Rizk, 1991; Böttcher et al., 1993; Vrieling et al., 1993; Obuya et al., 1993; Grue and Liddell, 1993; and Cheng et al., 1993). PA’s have been found to possess interesting medicinal properties

-454 (1995); received November 23, 1994/February 6, 1995 Kalanchoe spec., Senecio spec., Compositae, Leaf Wax, Pentacyclic Triterpenes Leaves and other aerial parts of several succulent spe­ cies each of Kalanchoe and Senecio exhibit more or less obvious wax coatings. The major components of these waxes were identified to be pentacyclic triterpenes. Some of these are rare natural products, while others are rather widespread. Introduction Most species of Kalanchoe (Crassulaceae) are more or less succulent xerophytes. The large Com­ positae genus Senecio also houses

n t i f y f o u r compounds: vesca lag in , c a s t a l a g i n , s tachyu r in , and c a s u a r i n i n ( r e f . 3 ) . 377 378 G. HABERMEHL SENECIO spp. A wor ldwide problem i s po i son inq by p l a n t s o f t h e genus Senecio. Seneciosis i s descr ibed under names l i k e "Winton disease" , "P i c tou d isease" , " N o ~ i s e a s e " , and "Schweinsberqer d isease" . They a l l a r e caused by one o r more Senecio species which c o n t a i n p y r r o l i z i d i n e a l k a l o i d s respons ib le f o r d isease and

. Naturforsch. 2008, 63b, 331 – 334; received September 20, 2007 Three new eremophilanolides (1 – 3) and several known compounds were isolated from Roldana lobata. The structures of the new compounds were elucidated by spectroscopic methods. The cyto- toxicity of the isolated compounds was tested against selected cancer cell lines. Key words: Roldana lobata, Senecioneae, Eremophilanolides Introduction The genus Roldana (Asteraceae, Senecioneae, Tus- silagininae), spread from southern Arizona and New Mexico to Panamá, groups 48 species segregated from the genus Senecio [1, 2

were identified in S. aegyptius var. discoideus, 8 in S. desfontainei and 13 in S. cineraria. Some of these alkaloids have not been reported from these plants. The alkaloidal pattern of different plant organs (flowers, leaves, stem, root) were also investigated. Senecionine has been found to be a one of the major alkaloid in all studied species, it was isolated and its structure was elucidated by 1H- and 13C-NMR. Introduction Numerous taxa of the genus Senecio (Composi- tae) are rich in PAs exhibiting hepatotoxic, muta- genic, carcinogenic and antitumor activities

the most important genus of the tribe Senecioneae (Asteraceae) and includes about 1500 species widespread all over the world (Tahtajian et al., 1981). In the Bulgarian flora genus Senecio is represented by 16 species. One of them, Senecio macedonicus is a Balkan endemit (Andreev et al., 1992). Up to now the following mono- and open chain diester pyrrolizidine alkaloids (PAs) were isolated and identified: 7-angeloylretronecine, 9- angeloylretronecine, 7-angeloylplatynecine, 9-an- geloylplatynecine and mixture of sarracine and neosarracine (Christov et al., 1997