Table 2.

NMR Data for 3 and 4 (Acetone-d₆).

Pos.	3			4
	δC a	δH b (J in Hz)	HMBC a	δC c	δH d (J in Hz)	HMBC c
1	90.7			88.7
2	26.0	1.84, m; 2.12, m	1, 3, 4, 6	30.5	1.78, m; 2.06, m	1, 3, 4, 6
3	23.2	1.77, m; 1.96, m	1, 2, 4, 5, 7	23.8	1.77, m; 1.94, m	1, 2, 4, 5, 7
4	41.6	2.43, m	2, 3, 5, 6, 7, 11	42.7	2.38, m	2, 6, 7, 11
5	23.5	1.72, d (11.0); 2.30, ddd (11.0, 6.0, 5.5)	1, 3, 4, 6, 7, 8	23.2	1.76, d (11.0); 2.35, ddd (11.0, 6.0, 5.5)	1, 3, 4, 6, 7, 8
6	44.3	2.82, dd (5.5, 5.0)	1, 2, 4, 7, 10, 11	48.7	2.90, dd (6.7, 5.5)	1, 2, 4, 5, 10, 11
7	53.6			55.9
8	177.8			179.1
10	66.4	3.70, brs	1, 2, 6	25.1	1.42, s	1, 2, 6
11	44.5	3.09, d (19.0); 3.15, d (19.0)	4, 6, 7, 8, 12	37.3	1.89, m; 1.99, m	4, 6, 7, 8, 12, 13
12	199.5			67.1	4.57, ddd (10.7, 10.6, 5.2)	7, 11, 13, 14
13	128.2	6.82, q (1.5)	12, 14, 15, 16	139.1	6.25, dq (10.6, 1.5)	11, 14, 15, 16
14	146.2			131.3
15	170.6			171.3
16	14.9	2.15, d (1.5)	13, 14, 15	13.2	1.83, d (1.5)	13, 14, 15
OH-10		4.10, brs
OH-12					4.15, brs	11
NH2-15		7.18, brs; 6.62, brs			6.73, brs; 6.19, brs

^a Recorded at 100 MHz; ^b Recorded at 400 MHz; ^c Recorded at 125 MHz; ^d Recorded at 500 MHz.