¹³C (125 MHz) NMR data for compounds 1–4 in CDCl₃ (δ in ppm).

No.	1	2	3	4
1	108.9, C	109.7, C	171.6, C	173.1, C
2	94.4, C	81.0, C	66.1, C	66.3, C
3	75.7, CH	81.3, CH	76.4, CH	76.4, CH
4	39.9, C	38.7, C	44.6, C	45.7, C
5	39.4, CH	39.6, CH	47.2, CH	51.8, CH
6	32.1, CH2	32.3CH2	32.3, CH2	72.1, CH
7	174.1, C	174.3, C	172.6, C	170.2, C
8	81.4, C	82.6, C	94.0, C	92.0, C
9	58.0, CH	58.5, CH	55.8, CH	55.2, CH
10	47.6, C	44.9, C	51.1, C	50.5, C
11	69.0, CH	69.2, CH	69.0, CH	21.8, CH2
12	36.2, CH2	36.0, CH2	34.0, CH2	34.2, CH2
13	41.8, C	41.8, C	41.2, C	35.3, C
14	71.3, C	71.3, C	71.3, C	42.4, CH
15	37.0, CH2	36.9, CH2	37.0, CH2	28.2, CH2
16	169.0, C	170.1, C	168.0, C	169.3, C
17	77.8, CH	78.0, CH	77.8, CH	77.8, CH
18	15.4, CH3	15.7, CH3	15.9, CH3	22.5, CH3
19	22.8, CH3	21.8, CH3	22.8, CH3	22.7, CH3
20	120.4, C	120.5, C	120.2, C	121.1, C
21	141.7, CH	141.6, CH	141.5, CH	140.6, CH
22	110.2, CH	110.2, CH	109.8, CH	109.5, CH
23	143.0, CH	142.8, CH	143.3, CH	143.6, CH
28	22.5, CH3	22.5, CH3	26.7, CH3	27.5, CH3
29	24.5, CH3	24.4, CH3	27.3, CH3	27.9, CH3
30	41.1, CH2	41.9, CH2	41.7, CH2	40.0, CH2
2-OAc	175.3, C	—	—	—
	22.3, CH3	—	—	—
3-OAc	170.6, C	171.5, C	170.1, C	170.1, C
	21.10, CH3	21.12, CH3	20.9, CH3	20.9, CH3
6-OAc	—	—	—	170.3, C
	—	—	—	21.0, CH3
7-OCH3	52.2, CH3	52.1, CH3	52.1, CH3	52.9, CH3
11-OAc	169.8, C	169.8, C	169.8, C	—
	21.08, CH3	21.07, CH3	21.2, CH3	—