α-Amylase and α-Glucosidase Inhibitory Saponins from Polyscias fruticosa Leaves

Table 1

¹³C-NMR data of compounds 1–3 measured in DMSO-.

C	1	2	3	C	1	2	3
1	38.1	38.1	38.1	3-O-GluA
2	25.4	22.9	25.4	1′	105.0	103.6	103.6
3	87.9	88.4	88.3	2′	73.5	79.3	79.5
4	38.7	38.6	38.6	3′	75.4	75.4	75.3
5	55.0	55.0	55.0	4′	82.9	82.3	82.3
6	17.7	17.7	17.7	5′	75.3	75.1	75.1
7	32.2	32.3	32.7	6′	172.0	171.8	171.5
8	40.0	40.7	40.0	4′-O-Glu
9	47.0	47.0	47.0	1′′	103.8	103.3	103.3
10	36.2	36.2	36.2	2′′	73.4	73.5	73.6
11	22.9	22.9	22.9	3′′	76.3	76.2	76.3
12	121.6	121.7	121.5	4′′	70.0	69.9	69.9
13	143.4	143.4	143.5	5′′	77.0	77.0	77.0
14	41.2	41.2	41.1	6′′	61.1	61.1	61.0
15	27.1	27.7	27.9	2′-O-Glu
16	22.5	22.5	21.9	1′′′′	—	103.1	103.2
17	45.9	45.9	45.8	2′′′′	—	73.5	73.6
18	40.7	40.7	40.7	3′′′′	—	76.1	76.0
19	45.5	45.5	45.5	4′′′′	—	70.1	70.0
20	30.2	30.3	30.2	5′′′′	—	76.8	76.7
21	33.2	33.2	33.2	6′′′′	—	60.9	61.0
22	31.6	31.6	32.3	28-O-Glc/Gal
23	27.6	27.7	27.7	1′′′	94.1	94.1	91.9
24	16.6	16.1	16.7	2′′′	72.3	72.3	76.9
25	15.1	15.1	15.1	3′′′	76.6	76.6	74.1
26	16.4	16.9	16.7	4′′′	69.5	69.5	70.7
27	25.4	25.5	25.5	5′′′	77.6	77.7	76.8
28	175.2	175.2	175.2	6′′′	60.7	60.7	61.8
29	32.7	32.7	32.7	2′′′-O-Glu
30	23.3	23.3	23.4	1′′′′′	—	—	102.3
				2′′′′′	—	—	75.0
				3′′′′′	—	—	77.0
				4′′′′′	—	—	69.4
				5′′′′′	—	—	77.5
				6′′′′′	—	—	60.5