Cassane diterpenoids from the seeds of Caesalpinia bonduc and their nitric oxide production and α-glucosidase inhibitory activities Author Tu, Wen-Chao , Lin-Fen Ding &, Liu-Dong Song & **, & * & State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China Author Ding, Lin-Fen Author Peng, Li-Yan Author Song, Liu-Dong Author Wu, Xing-De Author Zhao, Qin-Shi text Phytochemistry 2022 112973 2022-01-31 193 112973 112973 http://dx.doi.org/10.1016/j.phytochem.2021.112973 journal article 10.1016/j.phytochem.2021.112973 1873-3700 8167921

Table 2 13 C NMR spectroscopic data of compounds 1–12 in CDCl (δ in ppm).

No.	1 a	2 a	3b	4 a	5a	6a	7 a	8 a	9 a	10b	11 a	12 a
a Measured at 125 MHz. b Measured at 150 MHz.
1	74.8	73.6	73.5	75.8	76.2	75.4	214.8	76.0	75.9	74.0	74.4	75.7
2	23.5	66.4	25.2	22.6	22.3	22.6	36.4	22.7	22.5	69.7	68.0	22.7
3	33.4	77.2	30.4	30.1	32.7	30.0	40.8	30.1	32.1	36.8	36.0	32.9
4	39.6	43.1	38.4	38.6	38.7	38.6	40.0	38.5	39.0	41.2	40.0	38.6
5	80.3	75.8	77.2	78.5	78.5	78.4	83.7	78.1	79.3	79.4	75.6	77.0
6	76.5	24.5	24.0	31.5	73.4	32.0	77.1	35.2	76.0	74.7	23.9	72.8
7	74.3	23.4	23.8	71.7	30.6	75.4	75.0	66.0	78.7	80.5	23.6	31.8
8	45.4	124.3	128.7	39.7	33.9	37.3	49.2	48.5	40.3	37.8	125.8	127.0
9	42.2	142.4	141.1	32.0	31.9	36.0	36.2	35.5	36.0	35.9	142.1	138.6
10	46.2	48.4	47.0	43.4	45.3	43.6	56.7	43.4	45.0	46.0	48.3	49.4
11	111.8	102.2	104.5	22.2	22.2	21.7	26.7	22.7	21.7	21.7	102.4	104.2
12	152.4	158.2	153.9	148.4	148.5	151.2	152.5	154.1	149.9	150.2	158.2	153.8
13	138.1	125.1	125.8	122.2	122.7	110.0	124.0	115.8	114.0	113.3	124.5	126.1
14	154.7	133.0	129.3	27.7	31.0	52.9	69.5	75.9	46.9	45.7	133.1	128.6
15	108.5	29.3	105.2	109.8	109.7	109.2	108.8	109.2	108.6	108.5	29.3	105.0
16	171.6	71.0	144.4	141.0	141.0	142.0	142.1	141.5	141.7	141.8	70.9	144.8
17	117.4	16.6	16.1	17.2	17.4	199.9	28.7	68.5	175.5	174.6	16.5	16.0
18	30.5	23.2	28.1	28.3	31.2	28.1	30.0	28.2	31.1	31.1	28.1	30.8
19	24.2	25.2	25.1	25.4	25.1	25.1	25.9	25.4	25.0	25.5	25.7	24.9
20	19.0	31.1	30.2	17.8	16.9	17.6	17.0	17.9	17.0	16.5	30.3	30.3
1-OAc	21.0	21.3		21.5	21.5	21.6		21.6	21.6		21.2	21.5
	171.6	169.7		169.6	169.1	169.2		169.2	169.3		169.6	169.6
2-OAc		20.9								21.5	21.3
		170.1								170.2	170.7
3-OAc		21.0
		169.8
6-OAc	21.7				22.0		21.7					22.1
	172.1				170.5		172.1					170.7
7-OAc	21.1			22.1		21.1	21.9			21.2
	172.4			170.8		171.1	172.7			172.4
-OCH3								53.1	52.3	52.2