Table 1.

¹³C NMR data of compounds 1–3, 5, and 7–9.

No.	1 a	2 b	3 b	5 b	7 a	8 a	9 a
1	42.3	45.6	46.6	43.0	36.8	32.0	40.0
2	68.8	69.4	70.0	70.8	67.9	67.3	66.4
3	82.8	83.5	84.3	47.7	45.3	43.6	46.1
4	38.9	40.5	40.5	35.8	36.3	34.0	36.3
5	48.3	50.3	51.5	53.2	50.6	59.5	45.7
6	26.1	36.6	20.4	19.6	26.7	81.4	41.8
7	67.9	200.6	31.1	30.5	95.4	189.1	199.5
8	141.9	123.7	126.5	128.7	145.8	121.8	110.2
9	150.6	157.2	148.0	139.1	121.7	143.8	128.3
10	40.0	39.9	39.5	49.5	47.3	49.2	53.1
11	188.0	110.6	111.6	112.4	112.3	111.0	146.6
12	132.4	162.6	153.4	153.5	148.1	159.1	108.6
13	153.6	135.2	133.8	135.3	136.7	136.1	137.1
14	190.1	127.3	127.4	128.2	117.3	128.2	150.2
15	26.4	27.9	27.7	27.9	26.8	27.0	27.4
16	21.5	22.8	23.3	23.1	22.3	22.3	22.5
17	21.4	22.9	23.2	23.2	22.2	22.4	22.8
18	28.8	28.6	29.4	32.6	30.8	31.4	33.3
19	17.0	16.9	17.4	21.5	20.8	22.7	22.0
20	21.1	24.6	26.3	179.0	170.9	176.0	177.9
2-OCOCH3	-	-	-	21.4	21.3	21.4	21.4
2-OCOCH3	-	-	-	172.6	169.9	170.0	170.3

^a Recorded in CDCl₃, 125 MHz; ^b recorded in methanol-d4, 100 MHz.