Compound 11 was isolated and identified in a previous study, during which the relative configuration of H-2 and H-4 in the C-ring was determined as being cis-configured based on the NOE between H-2 and H-4 observed in the NOESY spectrum. However, it is known that NOESY data can be ambiguous or inconclusive in case of spin diffusion. As the previously reported 2,3cis-3,4-cis relative configuration of natural PACs is rarely found in the literature, we challenged the prior evidence and pursued additional evidence to establish both the relative and absolute configuration. The upfield shifted C-2 (C 77.1, C-ring; Table ) compared to the signal from the corresponding carbon in epicatechin (C 79.1) suggested that H-2 and H-4 are in fact transpositioned when considering earlier knowledge about the γ-gauche effect. Difference in the J3,4