Table 1.

¹H and ¹³C NMR data for ETH-LAD hemitartrate in d₆-DMSO at 400 / 150 MHz

No.	13C [δ / ppm]	1H [δ / ppm]
1	–	10.75 (s, 1H)
2	119.88	7.05 (t, J = 2.0 Hz, 1H) a
3	109.17	–
4	26.88	3.54–3.47 (m, 4β -H, 1H) b
		2.60–2.51 (m, 4α-H, 1H) c
5	59.59	3.47–3.41 (m, H-5β, 1H) d
6	–	–
7	51.44	3.11 (dd, J = 10.8, 4.6 Hz, H-7α) e
		2.84–2.67 (m, H-7β, 1H) f
8	39.22	3.83–3.71 (m, H-8α, 1H)
9	120.64	6.24 (s, 1H)
10	135.88	–
11	127.85	–
12	111.58	7.02 (dd, J = 7.2, 0.8 Hz, 1H) g
13	122.79	7.07 (t, J = 7.3 Hz, 1H) h
14	110.39	7.20 (dd, J = 7.2, 0.8 Hz, 1H)
15	134.28	–
16	126.31	–
17	47.62	3.09–3.01 (m, 1H) i
	47.62	2.84–2.67 (m, 1H) j
18	10.37	1.09 (t, J = 7.2 Hz, 1H) k
19	171.09	–
20	–	–
21	42.01	3.47–3.41 (m, 2H) l
21	39.72	3.32 (q, J = 7.1 Hz, 2H)
22	15.29	1.19 (t, J = 7.1 Hz, 3H)
22	13.55	1.07 (t, J = 7.1 Hz, 3H) m
TA n	72.33	4.18 (s, 1H)
TA n	173.89	–

^aOverlapping with H-13 and H-12.

^bOverlapping with H-5β and H-21 (2H).

^cOverlapping with solvent.

^dOverlapping H-4β and H-21 (2H).

^eOverlapping H-17 (1H).

^fOverlapping with H-17 (1H).

^gOverlapping with H-13 and H-2.

^hOverlapping with H-12 and H-2.

ⁱOverlapping with H-7α.

^jOverlapping with H-7β.

^kOverlapping with H-22 (3H).

^lOverlapping H-5β and H-4β (1H).

^mOverlapping with H-18 (3H).

ⁿTA: tartaric acid.