Table 1 in Secondary metabolites of the lichen Hypogymnia physodes (L.) Nyl. and their presence in spruce (Picea abies (L.) H. Karst.) bark

Table 1 Chemical features of compounds isolated from H. physodes thalli. Retention times (R) from the UPLC analysis, UV absorption maxima (λ), molecular ion masses ([M — H] —), and t max relative retention factors (Rf) from the TLC analysis. CompoundRt (min)UV λ max (nm)[M — H] — (m / z)Rf (× 100)Identificationhp14.5212; 266; 312417n.d.Conphysodalic acid C20H18O10, Mr 418.3hp25.0211; 243; 314373n.d.Protocetraric acid C18H14O9, Mr 374.3hp36.1211; 242; 31541519Physodalic acid C20H16O10, Mr 416.3hp46.9218; 278; 308485133-Hydroxyphysodic acid C26H30O9, Mr 486.5hp57.0 *204; 215; 269483n.d.4- O -methylphysodic acid C27H32O8, Mr484.5hp67.2 *216; 245; 319483n.d.2 0 -O -methylphysodic acid C27H32O8, Mr484.5hp77.6209; 259; 31846918Physodic acid C26H30O8, Mr470.5hp87.9214; 255; 318511n.d.OE -Alectoronic acid C28H32O9, Mr 512.5hp98.8211; 252; 32137379Atranorin C19H18O8, Mr 374.3hp109.1211; 250; 315; 350407n.d.Chloroatranorin C19H17ClO8, Mr 408.8 * Trace amount.