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. 2021 Sep 18;6(38):24484–24492. doi: 10.1021/acsomega.1c02926

Table 1. Macamides and Fatty Acid Derivatives Identified in the Air-Dried Maca.

peak no. RT (min) [M – H]− (m/z) [M + H]+ (m/z) formula mode fragment ions MS/MS (m/z) identified compounds UV max (nm)
1 3.1 307.1909   C18H28O4 – 307, 289, 235, 211, 209, 185, 121 16-hydroxy-9-oxo-10E,12E,14E-octadecatrienoic acid 314
2 4.0 305.1754   C18H26O4 – 305, 287, 249, 135, 125 9,16-dioxo-10E,12E,14E-octadecatrienoic acid 317
3 5.0   398.2703 C25H35NO3 + 398, 380, 273, 260, 108, 91 N-benzyl-16(S)-hydroxy-9-oxo-10E,12E,14E-octadecatrienamide 314
4 6.3   396.2537 C25H33NO3 + 396, 380, 300, 289, 271, 260, 108, 91 N-benzyl-9,16-dioxo-10E,12E,14E-octadecatrienamide 317
5 6.7   234.1863 C15H23NO + 234, 108, 91 N-benzyl-octanamide  
6 7.5 293.2114   C18H30O3 – 293, 275, 235, 171, 121 9-hydroxy-10E,12Z,15Z-octadecatrienoic acid 236
7 8.5 291.1956   C18H28O3 – 291, 273, 235, 195, 111, 97 13-oxo-9E,11E,15E-octadecatrienoic acid 276
8 8.9 291.1956   C18H28O3 – 291, 273, 197, 185, 125, 121 9-oxo-10E,12Z,15Z-octadecatrienoic acid 279
9 9.2 291.1963   C18H28O3 – 291, 273, 197, 185, 125, 121 9-oxo-10E,12E,14E-octadecatrienoic acid 276
10 9.4 295.2280   C18H32O3 – 295, 277, 195, 133 13-hydroxy-9Z,11E-octadecadienoic acid 234
11 9.5 295.2271   C18H32O3 – 295, 277, 195, 171, 125 9-hydroxy-10E,12Z-octadecadienoic acid 234
12 10.3 293.2112   C18H30O3 – 293, 275, 249, 195, 185, 113 13-oxo-9Z,11E-octadecadienoic acid 279
13 10.5 293.2117   C18H30O3 – 293, 275, 249, 195, 185, 113 13-oxo-9E,11E-octadecadienoic acid 276
14 10.9 293.2117   C18H30O3 – 293, 275, 249, 197, 185, 125 9-oxo-10E,12Z-octadecadienoic acid 279
15 11.3 293.2117   C18H30O3 – 293, 275, 249, 197, 185, 125 9-oxo-10E,12E-octadecadienoic acid 276
16a 11.6   382.2726 C25H35NO2 + 382, 364, 286, 275, 260, 257, 108, 91 N-benzyl-13-oxo-9E,11E,15E-octadecatrienamide 276
17a 11.9   382.2742 C25H35NO2 + 382, 364, 288, 275, 260, 108, 91 N-benzyl-9-oxo-10E,12Z,15Z-octadecatrienamide 279
18a 12.2   382.2745 C25H35NO2 + 382, 364, 288, 275, 260, 108, 91 N-benzyl-9-oxo-10E,12E,14E-octadecatrienamide 276
19a 13.2   384.2901 C25H37NO2 + 384, 366, 286, 277, 260, 108, 91 N-benzyl-13-oxo-9Z,11E-octadecadienamide 279
20 13.4   384.2896 C25H37NO2 + 384, 366, 286, 277, 260, 108, 91 N-benzyl-13-oxo-9E,11E-octadecadienamideN-benzyl-13-oxo-9E,11E-octadecadienamideN-benzyl-13-oxo-9E,11E-octadecadienamide 276
21 14.0   384.2908 C25H37NO2 + 384, 366, 277, 260, 108, 91 N-benzyl-9-oxo-10E,12Z-octadecadienamide 279
22 14.4   384.2913 C25H37NO2 + 384, 366, 277, 260, 108, 91 N-benzyl-9-oxo-10E,12E-octadecadienamide 276
23 15.9   386.3047 C25H39NO2 + 386, 368, 279, 260, 232, 108, 91 N-benzyl-9-oxo-12E-octadecadienamide  
24 16.4 277.2172   C18H30O2 – 277 (Z,Z,Z)-9,12,15-octadecatrienoic acid  
25 18.5   398.3046   + 398, 138, 121 N-(3-methoxybenzyl)-9Z,12Z,15Z-octadecatrienamide  
26 18.9   368.2949   + 368, 108, 91 N-benzyl-9Z,12Z,15Z-octadecatrienamide  
27 19.0 279.2332   C18H32O2 – 279 (Z,Z)-9,12-octadecatrienoic acid  
28 20.8   400.3208   + 400, 138, 121 N-(3-methoxybenzyl)-9Z,12Z-octadecadienamide  
29 21.1   370.3109   + 370, 108, 91 N-benzyl-9Z,12Z-octadecadienamide  
30 21.2 255.2332   C16H32O2 – 255 1-Pentadecanecarboxylic acid  
31 21.7 281.2494   C18H34O2 – 281 (Z)-9-octadecatrienoic acid  
32 22.6   376.3211   + 376, 138, 121 N-(3-methoxybenzyl)-hexadecanamide  
33 22.9   346.3102   + 346, 108, 91 N-benzyl-hexadecanamide  
34 23.1   402.3367   + 402, 138, 121 N-(3-methoxybenzyl)-9Z-octadecadienamide  
35 23.4   372.3261   + 372, 108, 91 N-benzyl-9Z-octadecadienamide  
a

Novel macamides identified in this study.