Table 1.

¹H and ¹³C NMR Data for Compounds 1–3.

No.	1a a		1b a		2 b		3 c
	δC	δH, Mult. (J in Hz)	δC	δH, Mult. (J in Hz)	δC	δH, Mult. (J in Hz)	δC	δH, Mult. (J in Hz)
1		9.79, s	103.1, C	9.64, s	161.9, C		65.5, C
2	166.4, C		164.5, C		115.5, CH	5.70, s	170.0, C
3	103.2, C		103.1, C		161.9, C
4	183.3, C		185.8, C		40.9, CH2	2.26, t (8.0)	194.2, C
5	129.3, C		130.0, C		28.2, CH2	1.58, m; 1.89d	131.9, C
6	165.9, C		167.5, C		50.8, CH	1.89d	188.7, C
7	119.9, CH	7.70, d (9.9)	119.9, CH	7.67, d (9.8)	164.6, C		117.6, CH	5.77, d (11.3)
8	143.5, CH	6.93, m	144.1, CH	6.96, m	125.6, CH	5.85, s	147.3, CH	6.66, dd (11.3, 10.7)
9	30.4, CH2	2.36, m; 2.56, m	30.4, CH	2.34, m; 2.59, m	199.2, C		128.7, CH	7.22, dd (10.7, 10.3)
10	73.4, CH	4.41, m	73.4, CH	4.41, m	47.3, CH2	2.06, d (17.1); 2.37, d (17.1)	145.5, CH	6.34, dq (10.3, 6.8)
11	20.1, CH3	1.39, d (6.0)	20.1, CH3	1.39, d (6.0)	36.5, C		18.8, CH3	1.85, d (6.8)
12	118.4, C		118.8, C		19.3, CH3	2.18, s	127.7, C
13	20.8, CH3	1.74, s	20.9, CH3	1.74, s	24.8, CH3	1.99, s	21.8, CH3	2.13, s
14	18.2, CH3	2.10, s	17.9, CH3	2.11, s	27.3, CH3	1.08, s	21.4, CH3	2.19, s
15					28.9, CH3	1.03, s	15.3, CH3	1.30, s

^a Data were measured in DMSO-d₆ at 600 MHz (¹H) and 150 MHz (¹³C). ^b Data were measured in CDCl₃ at 500 MHz (¹H) and 125 MHz (¹³C). ^c Data were measured in DMSO-d₆ at 500 MHz (¹H) and 125 MHz (¹³C), and the signals for N-methyl were δ 3.36 (s, 3H) and 31.1 (CH₃), respectively. ^d overlapped.