Table 2.

NMR data (500 MHz, 75% CH₃CN/D₂O, suppression of HDO and CH₃CN at t δ_H 4.64 and 2.82 ppm, respectively) for sargahydroquinal (9) obtained via stop-flow HPLC-NMR.

	Sargahydroquinal (9)
Position	δH (J in Hz)	gCOSY
1
2
3	7.23, d (2.5)
4
5	7.25, d (2.5)
6
7	2.94, s
1′	4.05, d (7.5)	2′, 18′
2′	6.10, t (7.5)	1′
3′
4′	2.70-3.00, m
5′	2.96, m	6′
6′	6.00, t (7.0)	5′
7′
8′	2.98, m	9′
9′	3.26, dt (7.0, 8.0)	8′, 10′
10′	7.37, t (7.0)	9′
11′
12′	2.70-3.00, m
13′	2.70-3.00, m
14′	5.92, t (7.0)	16′
15′
16′	2.37, s	14′
17′	2.48, s
18′	2.52, s	1′, 2′
19′	2.35, s
20′	10.07, s
1-OH	ND a
4-OH	ND a

^a Signal not detected.