Antinociceptive Activity of Ethanol Extract from Duguetia chrysocarpa Maas (Annonaceae)

Table 4

¹H (200 MHz) and ¹³C (50 MHz) NMR data for 1 including results obtained by heteronuclear 2D shift-correlated HMQC and HMBC spectra, in CDCl₃ as solvent and TMS as internal reference. Chemical shifts in δ (ppm) and coupling constants (J, in parenthesis) in Hz.

C	𝛿C	𝛿H	^2JCH	^3JCH
1	122.59	—
3	146.10	—	C-3
4	149.87	—
C=O	166.43	—
CH
2	111.65	7.53 (d), 𝐽=2 Hz		C-4
5	113.97	6.91 (d), 𝐽=8.2 Hz	C-4
6	124.07	7.62 (dd), 𝐽=2 and 8.4 Hz
CH2
1′	60.78	4.32 (q), 𝐽=7 Hz		C-4
CH3
2′	14.37	1.36 (t), 𝐽=7 Hz
OCH3
3	56.05	3.92 (s)		C-3