Table 2.

¹³C NMR Data (δ) for Compounds 1–5

position	1a	2b	3c	4d	5c
2	137.2	137.2	138.7	137.4	137.8
3	35.3	34.5	36.6	36.6	36.0
5	61.8	62.7	62.8	62.2	61.7
6	30.1	30.4	31.0	29.5	26.4
7	108.7	108.7	109.4	109.1	109.7
8	128.9	129.0	129.8	129.4	130.3
9	118.2	118.1	118.8	117.7	118.9
10	119.7	119.5	119.8	119.2	119.6
11	122.4	122.3	122.6	121.8	122.5
12	110.2	110.0	111.1	110.1	110.8
13	135.0	135.9	137.3	135.7	137.9
14	32.3	31.8	33.6	33.6	36.5
15	42.1	36.3	43.4	41.9	40.3
16	50.0	48.8	50.8	49.9	47.6
17	72.6	73.7	73.0	72.7	77.0
18	17.1	13.6	17.5	17.2	11.6
19	59.4	57.5	59.1	59.3	113.6
20	64.8	63.8	65.2	64.7	142.7
21	89.7	89.8	90.2	89.6	50.3
22					88.8
N-Me	40.7	41.2	40.7	40.8
CO2Me	171.7	171.5	172.1	171.3	174.0
	50.5	50.9	53.1	50.4	50.5
2’	136.1	136.2	134.1	190.5	136.8
3’	54.8	54.5	175.2	48.7	62.2
5’	51.3	51.3	42.6	49.0	52.7
6’	22.0	22.0	21.1	33.9	22.3
7’	108.9	108.9	108.6	88.2	109.7
8’	124.3	124.5	124.4	134.5	125.4
9’	117.0	117.2	117.4	120.5	117.5
10’	104.5	104.7	105.9	132.2	106.3
11’	152.1	152.0	153.1	156.6	152.9
12’	114.2	114.3	115.6	104.0	116.2
13’	135.9	135.1	135.9	150.8	136.1
14’	30.6	30.5	38.8	27.0	28.8
15’	26.7	26.8	31.7	31.9	27.2
16’	54.2	54.3	55.7	49.9	55.1
17’	35.6	35.9	34.4	35.1	37.0
18’	11.6	11.6	11.5	11.5	11.8
19’	26.7	26.7	28.2	26.5	27.5
20’	38.2	38.2	35.8	37.5	38.8
21’	58.5	58.8	56.2	58.0	58.2
22’	46.7	46.7			62.0
23’	208.8	208.8
24’	31.0	31.0
CO2Me’	174.5	174.7	172.1	173.4	174.9
	52.3	52.5	50.6	53.2	52.7
OMe-11’	56.4	56.7	56.9	55.8	57.5

^a125 MHz, CDCl₃.

^b200 MHz, CDCl₃.

^c200 MHz, acetone-d₆.

^d150 MHz, CDCl₃.