Oxidative Medicine and Cellular Longevity / 2014 / Article / Tab 1 / Research Article
The Effects of Sesquiterpenes-Rich Extract of Alpinia oxyphylla Miq. on Amyloid-β -Induced Cognitive Impairment and Neuronal Abnormalities in the Cortex and Hippocampus of Mice Table 1 Retention times, MS, and MS/MS2 fragmentation patterns of the substances in chloroform extract of Alpinia oxyphylla.
Peak (min)MS+ ( / ) Major fragments (positive ion mode) ( / ) Tentative identification 1 1.08 192.1234 175.1 M+H-H2 O+ 151.1 M+H-CH2 CO+ 133.1 M+H-CH2 CO-H2 O+ Oxyphyllanene A 2 1.22 153.8901 110.8 M+H-CO2 + Protocatechuic acid 3 3.47 220.1544 177.1 133.1 Unknown 4 3.96 252.1821 235.1 M+H-H2 O+ 206.1 M-3CH3 + 189.1 M+H-3CH3 -H2 O+ 177.1 M-C3 H5 -2OH+ 107.1 11S-nootkatone-11,12-diol 5 4.06 252.1797 235.1 M+H-H2 O+ 206.1 M-3CH3 + 189.1 M+H-3CH3 -H2 O+ 177.1 M-C3 H5 -2OH+ 107.1 11R-nootkatone-11,12-diol 6 6.62 194.1307 177.1 M+H-H2 O+ 149.1 M+H-H2 O-CO+ 135.1 M+H-H2 O-CO-CH3 + 120.1 M+H-H2 O-CO-2CH3 + Teuhetenone A 7 8.10 194.1389 177.1 M+H-H2 O+ 161.1 M+H-H2 O-CH2 + 137.1 M+H-H2 O-CO-CH2 + Teuhetenone B 8 10.18 220.1547 203.1 → 159.1 Unknown 9 14.21 222.1705 180.1 → 138.1 Unknown 10 15.82 216.1595 179.1 → 137.1 Unknown 11 16.48 234.1704 217.2 M+H-H2 O+ 207.2 M+H-CO+ 203.2 M+H-H2 O-CH2 + → 189.2 M+H-H2 O-2CH2 + Oxyphyllol B 12 20.47 218.1671 176.1 M+H-C3 H6 + → 163.1 M+H-C3 H5 -CH+ → 149.1 M+H-C3 H5 -CH-CH2 + → 135.1 M+H-C3 H5 -CH-CO+ Nootkatone 13 24.53 Dibutyl phthalate