Table 1.

NMR Data for Compounds 1 and 2 in methanol-d₄^a

	1		2
	δC, mult.	δH, mult. (J in Hz)	δC, mult.	δH, mult. (J in Hz)
1	126.8, CH	7.23, d (8.4)	126.5, CH	7.24, d (8.5)
2	119.7, CH	7.05, d (8.4)	119.4, CH	7.05, d (8.5)
3	151.6, qC		151.1, qC
4	122.4, CH	7.02, brs	122.2, CH	7.02, brs
5	138.6, qC		138.3, qC
6	30.5, CH2	2.87, a/b	30.6, CH2	2.87, a/b
7	28.6, CH2	1.34, α	28.7, CH2	1.49, α
		1.91, β		1.92, β
8	39.0, CH	1.48,	39.1, CH	1.49,
9	45.2, CH	2.22,	45.2, CH	2.23,
10	138.1, qC		137.8, qC
11	27.5, CH2	1.56, β	27.6, CH2	1.55, β
		2.29, α		2.32, α
12	41.7, CH2	1.41, α	41.7, CH2	1.44, α
		2.25, β		2.28, β
13	44.4, qC		44.4, qC
14	54.6, CH	1.12	54.6, CH	1.15,
15	37.8, CH2	1.40, a	37.8, CH2	1.40, a
	2.34, b		2.35, b
16	74.5, CH	4.67	74.4, CH	4.63,
17	61.0, CH	1.39, d (7.8)	61.1, CH	1.38,
18	15.3, CH3	1.19, s	15.5, CH3	1.19, s
20	78.0, qC		77.9, qC
21	26.2, CH3	1.37, s	26.4, CH3	1.34, s
22	43.9, CH2	1.70, dt (4.2, 13.2) a	43.9, CH2	1.82, dt (5.0, 12.3) a
		1.87, b		1.93, b
23	24.9, CH2	2.08, dt (3.6, 12.6) a	30.6, CH2	2.12, a/b
		2.15, dt (5.4, 12.6) b
24	147.5, qC		157.2, qC
25	36.1, CH	2.27	35.1, CH	2.32
26	22.7, CH3	1.04, d (7.2)	22.5, CH3	1.08, d (7.4)
27	22.6, CH3	1.04, d (7.2)	22.5, CH3	1.08, d (7.4)
28	117.0, CH	5.25, q (6.6)	106.7, CH2	4.74, brs, a
				4.77, brs, b
29	13.4, CH3	1.63, d (6.6)

^aData obtained at 600 MHz for ¹H NMR and 125 MHz for ¹³C NMR for 1 and at 500 MHz for ¹H NMR and 125 MHz for ¹³C NMR for 2. For ¹H NMR, well-resolved couplings are expressed with coupling patterns and coupling constants in Hz in parentheses. For overlapped signals, only chemical shift values are given. Some geminal protons were denoted with α- or β-orientation based on NOE evidence.