Table 1.

¹³C-NMR data of compounds 1–7 in CDCl₃.

No.	1	2	3	4	5	6	7
2	107.5	105.6	107.0	103.5	104.9	102.0	186.7
3	85.4	85.1	85.3	51.9	51.1	70.6	50.8
5	86.1	85.6	85.9	105.4	106.9	63.5	89.7
6	42.5	44.4	42.9	42.8	40.9	42.5	43.6
7	55.1	53.1	55.5	52.3	52.4	62.4	53.2
8	131.5	131.6	133.1	138.0	136.8	131.3	142.4
9	126.0	126.0	126.1	122.7	123.4	121.6	121.6
10	121.5	122.1	121.9	119.9	120.0	127.5	124.9
11	128.9	128.6	128.9	128.1	128.5	130.6	125.4
12	110.7	110.4	110.3	109.1	110.2	112.5	120.8
13	147.9	148.3	147.8	144.6	145.9	148.7	156.1
14	25.0	28.5	23.6	26.2	27.0	34.2	35.8
15	34.1	33.5	37.3	27.7	28.3	34.2	33.4
16	65.6	54.4	55.0	52.8	52.1	65.6	58.8
17	197.4	65.9	66.2	-	-	194.5	63.0
18	13.4	13.7	13.6	12.8	12.9	15.1	13.5
19	120.7	119.7	119.8	58.4	58.5	133.2	127.8
20	130.5	131.3	131.3	61.5	61.6	129.9	137.7
21	47.9	48.1	48.2	44.7	44.5	66.6	50.5
CO2CH3	168.0	169.3	169.4	172.1	172.6	171.9	169.1
CO2CH3	52.7	51.5	51.7	51.8	51.6	53.9	51.4
N1-CH3	-	-	-	-	-	50.5	-
OCH3	48.6	48.5	48.4	54.8	57.0	-	54.7
COCH3	-	-	171.3	-	-	-	-
COCH3	-	-	20.1	-	-	-	-