Table 2.

¹H (500 MHz, CDCl₃) and ¹³C (125 MHz, CDCl₃) NMR data, ¹H–¹H COSY and HMBC correlations for sterol 2.

Position	δΗ (J in Hz)	δC,Mult.	1H–1H COSY	HMBC (H→C)
1		205.8, C
2	6.15 dd (10.5, 2.5)	128.8, CH	H-3	n.o.
3	6.68 ddd (10.5, 5.5, 2.5)	140.7, CH	H-2, H2-4	n.o.
4a	2.48 dd (20.5, 5.5)	31.1, CH2	H-3, H-4β	C-2, -3, -5, -10
4b	2.91 br d (20.5)		H-3, H-4α	n.o.
5		78.4, C
6	5.06 dd (12.0, 5.5)	75.1, CH	H2-7	C-5, -8, acetate carbonyl
7a	1.29 m	33.8, CH2	H-6, H-7b, H-8	C-6, -8, -9
7b	2.03 m		H-6, H-7a, H-8	C-9
8	1.27 m	29.2, CH	H2-7, H-9, H-14	n.o.
9	1.62 m	54.3, CH	H-8, H-11	C-10
10		54.3, C
11	3.91 br s	66.9, CH	H-9, H2-12, OH-11	n.o.
12a	1.13, m	48.9, CH2	H-11, H-12β	C-11, -13, -14, -17, -18
12b	2.24 dd (12.5, 5.0)		H-11, H-12α	C-11, -13, -14, -17, -18
13		43.1, C
14	1.19 m	54.9, CH	H-8, H2-15	C-13, -18
15	1.57 m	23.9, CH2	H-14, H2-16	n.o.
16	1.31 m; 1.89 m	28.1, CH2	H2-15, H-17	n.o.
17	1.15 m	55.9, CH	H2-16, H-20	C-13, -18
18	0.67 s	13.0, CH3		C-12, -13, -14, -17
19	1.34 s	9.8, CH3		C-1, -5, -9, -10
20	1.32 m	36.0, CH	H-17, H3-21, H2-22	C-22
21	0.89 d (6.5)	18.7, CH3	H-20	C-17, -20, -22
22a	0.91 m	33.5, CH2	H-20, H-22b, H2-23	C-20, -23, -24
22b	1.37 m		H-20, H-22a, H2-23	n.o.
23a	0.93 m	30.6, CH2	H2-22, H-23b, H-24	C-20, -22, -24
23b	1.36 m		H2-22, H-23a, H-24	C-22
24	1.20 m	39.0, CH	H2-23, H-25, H3-28	C-22
25	1.56 m	31.4, CH	H-24, H3-26, H3-27	C-24, -26, -27, -28
26	0.85 d (7.0)	20.5, CH3	H-25	C-24, -25, -27
27	0.78 d (6.5)	17.6, CH3	H-25	C-24, -25, -26
28	0.77 d (6.5)	15.4, CH3	H-24	C-23, -24, -25
OH-11	1.74 d (4.0)		H-11	n.o.
6-OAc		171.5, C
	2.11 s	21.2, CH3		Acetate carbonyl

n.o. = not observed.