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. 2019 Oct 15;24(20):3711. doi: 10.3390/molecules24203711

Table 11.

NMR1H spectra of 16k–16o (CDCl3 for 16k,l,n and DMSO-d6 for 16m,o; δ).

№ 16k 16l 16m 16n 16o
Structure graphic file with name molecules-24-03711-i053.jpg graphic file with name molecules-24-03711-i054.jpg graphic file with name molecules-24-03711-i055.jpg graphic file with name molecules-24-03711-i056.jpg graphic file with name molecules-24-03711-i057.jpg
H-14 s 7.15 s 7.11 s 7.24 s 7.09 s 7.37
H-17 s 7.60 s 7.63 s 7.94 s 7.68 s 8.09
H-19 d 6.65 (J = 2.5 Hz) s 7.59 s 6.46 m 6.39 s 8.00
H-20 m 6.45 s 7.39 s 6.14 m 6.11 s 9.17
H-21 d 7.49 (J = 2.2 Hz) m 6.75 s 6.92 s 6.72
H-22 s 3.91
NH s 8.88 bs 8.93 --- bs 8.68 ---
NH (HetAr) s 11.30 s 12.60
OH-3 s 18.77 s 18.79 bs 18.77 s 18.79 ---
OH-7 bs 12.40 --- s 12.05 --- s 12.71
OH-9 s 10.26 s 10.95 s 10.28 s 10.28 s 10.31