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Chemical Characterization of New Oxylipins from Cestrum parqui , and Their Effects on Seed Germination and Early Seedling Growth
Author(s) -
Fiorentino Antonio,
D'Abrosca Brigida,
DellaGreca Marina,
Izzo Angelina,
Natale Angela,
Pascarella Maria Teresa,
Pacifico Severina,
Zarrelli Armando,
Monaco Pietro
Publication year - 2008
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.200890167
Subject(s) - phytotoxicity , lactuca , chemistry , germination , dept , stereocenter , seedling , two dimensional nuclear magnetic resonance spectroscopy , heteronuclear single quantum coherence spectroscopy , stereochemistry , chemical structure , botany , carbon 13 nmr , organic chemistry , biology , enantioselective synthesis , catalysis
Isolation, chemical characterization, and phytotoxicity of five new oxylipins, together with seven already known related compounds, from Cestrum parqui L' Hérl . is reported. All the structures were elucidated on the basis of their spectral data, especially 1D‐ ( 1 H‐ and 13 C‐NMR, DEPT) and 2D‐NMR (COSY, TOCSY, HSQC, HMBC, and NOESY). The configurations of the stereogenic C‐atoms were determined by the Mosher 's method. The compounds have been assayed for their phytotoxicity on Lactuca sativa at concentrations ranging between 10 −4 and 10 −8 M . The results of the phytotoxicity tests on the germination and growth of the test species, obtained by a cluster analysis, showed interesting relationship between the chemical structures of the compounds and their biological effects.