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. Author manuscript; available in PMC: 2021 May 19.
Published in final edited form as: J Nat Prod. 2021 Apr 8;84(4):1078–1086. doi: 10.1021/acs.jnatprod.0c01149

Table 2.

Relative Ratios of 1a and 1b, Calculated Using the 100% Quantitative NMR Method with Normalized Integration Values.

hydrogen 1a 1b
7 100.00 38.56
6 98.95 38.13
2 106.38 40.35
8 94.54 38.74
4′ 85.57 42.18
4″ 88.62 35.38
OAc-4′ 104.00 35.16
normalized integral value 96.87 38.36
calculated purity (%) 71.63 28.37
±SD 5.70 1.86