Correction to Oleanane-Type Triterpenoids from the Leaves and Twigs of Fatsia polycarpa

Abstract

The following paragraph should be included in the Results and Discussion section. "Compound 6 was isolated as a white, amorphous powder, and its molecular formula was found to be C 31 H 50 O 4 , as deduced from its HRESIMS. By comparison of the NMR spectroscopic data (Tables 1 and 3) of 6 with those of 4, it was found that an olefinic group at C-9/C-11 in 4 was converted to an additional methoxy group at C-11 [δ H 3.23 (3H, s) and δ C 54.2 (CH)] in 6. It was also confirmed by the 1 HÀ 1 H COSY correlations between H-12/H-11 and H-9/H-11 and the crucial HMBC correlations from H-9/11-OMe to C-11. The NMR spectroscopic data reported 20 and coupling constants of H-11 for 3α,21β-dihydroxy-11α-methoxyolean-12-ene [δ H 3.88 (1H, dd, J = 9.0, 3.5 Hz) and δ C 75.9 (CH)] are similar to those of 6 [δ H 3.80 (1H, dd, J = 8.4, 3.0 Hz) and δ C 75.6 (CH)], indicating an α-orientation of the methoxy group. Therefore, the structure of fatsicarpain F (6) was identified as 3α-hydroxy-11α-methoxyolean-12-en-28-oic acid." The authors apologize for any inconvenience.