Table 3.

NMR Spectroscopic Data for Natural Product Isolate^a

position	δC, type	δH (J in Hz)	HMBCb
1	150.9, C
2	119.1, CH	6.83, d (2.3)	1, 3, 4, 6
3	117.5, C
4	130.8, CH	7.46, d (2.2)	3, 6
5	119.2, C
6	146.2, C
7	61.8, CH3	4.03, s	6
8	139.3, C
9	150.6, C
10	120.2, CH	7.18, d (2.2)	8, 9, 11, 12
11	120.1, C
12	127.6, CH	7.35, d (2.2)	8, 10, 13
13	117.4, C

^aRecorded in ¹H NMR and 125 MHz for ¹³C NMR.

^bHMBC correlations indicate the protons in CDCl₃, 500 MHz for column 3 coupling to the carbon entry in column 2.