. 2016 Mar 26;6(3):149–154. doi: 10.1007/s13659-016-0093-7

Table 2.

¹³C NMR spectroscopic data of alkaloids 1–5 (δ in ppm)

Position	δ _C(1)^a	δ _C(2)^a	δ _C(3)^b	δ _C(4)^a	δ _C(5)^a
1	34.2 t	34.2 t	125.0 d	101.2 d	130.0 d
2	76.7 d	77.0 d	158.1 s	155.2 s	128.7 d
3	106.7 s	104.0 s	200.1 s	83.1 s	76.0 d
4	53.7 d	55.1 d	81.9 s	86.1 s	31.6 t
5	67.4 s	65.5 s	71.0 s	76.8 s	87.0 s
6	39.2 t	38.6 t	34.0 t	35.8 t	43.3 d
7	20.6 t	20.1 t	20.0 t	20.1 t	27.1 t
8	50.2 t	50.1 t	54.1 t	54.2 t	67.6 t
10	55.1 t	54.9 t	47.8 t	48.1 t	63.3 t
11	76.1 d	76.2 d	32.4 t	31.0 t	23.0 t
12	132.4 s	132.4 s	130.7 s	131.8 s	35.6 t
13	128.6 s	128.5 s	134.3 s	133.4 s	135.0 s
14	110.1 d	110.0 d	108.2 d	108.0 d	128.2 s
15	147.4 s	146.8 s	146.7 s	144.9 s	111.1d
16	146.8 s	147.3 s	147.4 s	145.6 s	146.9 s
17	106.7 d	106.0 d	110.1 d	109.2 d	148.0 s
18					112.7 d
OCH₂O	101.5 t	101.5 t	101.8 t	100.6 t	102.4 t
2-OCH₃	–	–	57.5 q	56.9 q
3-OCH₃					56.1 q
CH₃ CO	–	–	–	168.9 s
CH₃CO				20.2 q

Alkaloids 1, 2, 4 and 5 recorded in acetone-d ₆; 3 in DMSO-d ₆

^aRecorded at 100 MHz

^bRecorded at 150 MHz