Phytochemical investigation of Chioccoca alba afforded three new iridoids,
alboside I, alboside II and alboside III, and a new seco-iridoid alboside V
. Alboside IV showed moderate activity towards the DNA repair-deficient mut
ant RS321 of Saccharomyces cerevisiae. The structural elucidation of the ne
w compounds was performed by ES-MS and by 1D and 2D NMR spectroscopic metho
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