Isolation and characterization of betulinic acid from the stem bark of Feretia canthioides Hiern and its antimalarial potential

Bulletin of the National Research Centre

Table 4 ¹³C-NMR (400 MHz, DMSO) data of isolated compound in comparison with literature data

Carbon position	¹³C δ(ppm) (Mahato and Kundu 1993)	¹³C δ(ppm) (Isolated compound DZ1)	Carbon type
C-1	38.70	39.43	CH₂
C-2	27.40	27.36	CH₂
C-3	78.90	77.04	CH
C-4	38.80	38.71	C
C-5	55.30	55.12	CH
C-6	18.30	18.17	CH₂
C-7	34.30	34.13	CH₂
C-8	40.70	39.97	C
C-9	50.50	50.15	CH
C-10	37.20	36.93	C
C-11	20.80	20.67	CH₂
C-12	25.50	25.29	CH₂
C-13	38.80	37.78	CH
C-14	42.40	42.19	C
C-15	30.50	30.33	CH₂
C-16	32.10	31.93	CH₂
C-17	56.30	55.63	C
C-18	46.80	46.84	CH
C-19	49.20	48.73	CH
C-20	29.70	29.43	CH₂
C-21	37.00	36.57	CH₂
C-22	150.30	150.52	C
C-23	27.90	28.30	CH₃
C-24	15.30	15.94	CH₃
C-25	16.00	15.94	CH₃
C-26	16.10	16.09	CH₃
C-27	14.70	14.58	CH₃
C-28	180.50	177.49	COOH
C-29	109.60	109.82	CH₂
C-30	19.40	19.14	CH₃