Table 7.

¹H and ¹³C NMR (CDCl₃, 300.13 MHz and 75.47 MHz) and HMBC assignment for 7.

Position	δC, Type	δH, (J in Hz)	COSY	HMBC	NOESY
2	80.3, C	-
3α	434, CH2	2.74, d (16.7)	H-3	C-2, 4, 10, 11	H3-11 (str)
β		3.00, d (16.7)	H-3	C-2, 4, 10, 11	H3-11 (w)
4	191.1, CO	-
4a	123.0, C	-
5	127.5, CH	8.26, d (2.3)	H-7	C-4, 7, 8a
6	119.6, C	-
7	136.4, CH	8.04, dd (8.7, 2.3)	H-5, 8	C-5, 8a
8	118.5, CH	7.07, d (8.7)	H-7	C-4a, 6, 8
8a	162.9, C	-
9	21.2, CH3	1.30, s	-	C-2, 3, 10	H-3α (str), H3β (w), H-5, 8 (w)
10	66.8, CH2	3.49, dd (11.6, 4.5)	OH-10
		3.59, dd (11.6, 4.2)
11	166.4, CO	-
OH-10	-	5.26, brt (5.4)	-
OH-11	-	12.69, br	-