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. 2023 Oct 4;71(41):15017–15034. doi: 10.1021/acs.jafc.3c03044

Table 1. Chromatographic, Spectrophotometric, and Mass Spectrometric Data of the Analyzed Products of Amaranthin, Argentianin, and Celosianin Oxidation by ABTS Radicals.

no. abbrev. compound Rt [min] λmax [nm] m/z [M + H]+ m/z from MS/MS of [M + H]+
Amaranthin Oxidation
1 2,3-OH-2dAm 2,3-dihydroxy-2-decarboxy-xanamaranthin 4.0 527 715 539; 377; 359
1′ 2,3-OH-2dIAm 2,3-dihydroxy-2-decarboxy- -xanisoamaranthin 4.5 527 715 539; 377; 359
2 Am amaranthin 4.7 534 727 551; 389; 343; 297; 255
2′ IAm isoamaranthin 5.2 534 727 551; 389; 343; 297; 255
3 2-dXAm 2-decarboxy-xanamaranthin 7.4 445 681 505; 459; 343
4 2,17-dXAm 2,17-bidecarboxy-xanamaranthin 7.8 427 637 461; 417
5 17-dNAm 17-decarboxy-neoamaranthin 7.9 480 681 505; 459; 343
6 2,17-dXNAm 2,17-bidecarboxy-xanneoamaranthin 9.6 412 635 459
7 2,17-dNAm 2,17-bidecarboxy-neoamaranthin 10.2 452 637 461; 417
8 2-dXNAm 2-decarboxy-xanneoamaranthin 12.3 422 679 503; 459; 341; 297; 253
Argentianin Oxidation
9 2,3-OH-2dArg 2,3-dihydroxy-2-decarboxy-xanargentianin 7.5 531 861 539; 377; 359
9′ 2,3-OH-2dIArg 2,3-dihydroxy-2-decarboxy- -xanisoargentianin 7.5 531 861 539; 377; 359
10 Arg argentianin 8.3 540 873 551; 389; 343; 297; 255
10′ IArg isoargentianin 8.7 540 873 551; 389; 343; 297; 255
11 17-dNArg 17-decarboxy-neoargentianin 11.2 450 827 681; 505; 343;297
12 2,17-dXArg 2,17-bidecarboxy-xanargentianin 11.8 465 783 637; 461; 417; 299; 253
13 2,17-dXNArg 2,17-bidecarboxy-xanneoargentianin 13.3 426 781 459; 297; 251
14 2,17-dNArg 2,17-bidecarboxy-neoargentianin 13.4 426 783 637; 461; 417; 299; 253
15 2-dXNArg 2-decarboxy-xanneoargentianin 15.9 435 825 679; 503; 459; 341; 295; 251
Celosianin Oxidation
16 2,3-OH-2dCel 2,3-dihydroxy-2-decarboxy-xancelosianin 8.0 532 891 873; 829; 539; 521; 377; 359
16′ 2,3-OH-2dICel 2,3-dihydroxy-2-decarboxy- -xanisocelosianin 8.1 532 891 873; 829; 539; 521; 377; 359
17 Cel celosianin 8.8 541 903 551; 389; 343; 297; 253
17′ ICel isocelosianin 9.0 541 903 551; 389; 343; 297; 253
18 17-dNCel 17-decarboxy-neocelosianin 11.4 452 857 681; 505; 459; 343; 297; 253
19 2,17-dXCel 2,17-bidecarboxy-xancelosianin 11.6 460 813 461; 417; 299; 253
20 2,17-dXNCel 2,17-bidecarboxy-xanneocelosianin 13.1 415 811 459; 297; 251
21 2,17-dNCel 2,17-bidecarboxy-neocelosianin 13.5 466 813 461; 417; 299; 253
22 2-dXNCel 2-decarboxy-xanneocelosianin 15.6 432 855 503; 459; 341; 295