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Publikováno v:
Journal of separation scienceREFERENCES. 44(17)
Pyrrolizidine alkaloids are toxins having hepatotoxic and carcinogenic effects on human health. A ultra high performance liquid chromatography tandem mass spectrometry technique was developed for the first time for the simultaneous determination of e
Autor:
H Damianakos, Waldemar Buchwald, M Jeziorek, Ioanna Chinou, Agnieszka Pietrosiuk, Katarzyna Sykłowska-Baranek
Publikováno v:
Phytochemistry Letters. 15:234-237
Seven secondary metabolites were isolated from the methanolic extracts of the roots and the aerial part of Cynoglossum columnae Ten. β-Arbutin and three pyrrolizidine alkaloids, namely 2′-epi-heliosupine N-oxide, rinderine N-oxide and 3′-O-acety
Publikováno v:
Journal of Asian Natural Products Research. 10:307-310
Two new pyrrolizidine alkaloids have been isolated from the roots of Cynoglossum furcatum. On the basis of chemical and spectroscopic evidence, structures of the compounds have been elucidated. They are lactodine (3), a monoster alkaloid and viridina
Publikováno v:
ResearcherID
Seven pyrrolizidine alkaloids (PAs) have been isolated from Lithospermum canescens and their structures determined by spectroscopical methods. Besides the known lycopsamine, O7- acetyl-lycopsamine and O7-acetylintermedine four new PAs were found. The
Publikováno v:
Phytochemistry. 42:1217-1221
3′-Acetylrinderine, 3′-acetylechinatine, 3′-acetylheliosupine and heliosupine were isolated from the aerial parts of Cynoglossum creticum and characterized by mass spectrometry and 1H and 13C NMR. A GC-mass spectrometric analysis revealed the p
Publikováno v:
Biochemical Systematics and Ecology. 24:415-421
Heliosupine, heliosupine N-oxide, 3′-acetylheliosupine, and viridiflorine were isolated and identified on the base of MS, 1 H and 13 C NMR from Cynoglossum officinale . Altogether 14 pyrrolizidine alkaloids were separated and identified by GLC and
Publikováno v:
ChemInform. 27
3′-Acetylrinderine, 3′-acetylechinatine, 3′-acetylheliosupine and heliosupine were isolated from the aerial parts of Cynoglossum creticum and characterized by mass spectrometry and 1H and 13C NMR. A GC-mass spectrometric analysis revealed the p
Publikováno v:
Nigerian Journal of Natural Products and Medicine. 11
Two new pyrrolizidine alkaloids of Cynoglossum furcatam have been isolated and characterised. They are lactodine, a monoester alkaloid and viridinatine, a pyrrolizidine diester alkaloid. Lactodine was formulated as 9-0-(-)lactylheliotridine and virid
Publikováno v:
Planta medica. 61(4)
Three pyrrolizidine alkaloids were isolated from Eupatorium portoricense and their structures elucidated by spectroscopic methods as (-)-viridifloryl-supinidine (amabiline), (-)-viridifloryl-heliotridine (echinatine), and C12- O-acetyl-(-)-viridiflor