Two Novel Norwithasteroids with Unusual Six- and Seven-Membered Ether Rings in Side Chain from Flos Daturae

Table 1

 ¹H and ¹³C-NMR data of 1 and 2 in CD₃OD at 400 MHz and 100 MHz, J in Hz.

Number	1		2
	𝛿C	𝛿H	𝛿C	𝛿H
1	207.3		207.3
2	128.9	5.77 dd (10.0, 2.4)	128.9	5.77 dd (10.1, 2.4)
3	144.0	6.65 ddd (10.0, 5.2, 2.1)	144.0	6.65 ddd (10.1, 5.1, 2.1)
4	36.5	3.24 dt (20.0, 2.4)	36.5	3.24 dt (20.0, 2.4)
		2.03 dd (20.0, 5.2)		2.03 dd (20.0, 5.1)
5	78.3		78.3
6	75.2	3.51 t (2.4)	75.2	3.51 t (2.2)
7	33.7	1.55 (m)	33.7	1.55 (m)
		1.63 (m)		1.64 (m)
8	30.5	1.67 (m)	30.4	1.68 (m)
9	41.2	1.86 (m)	41.3	1.85 (m)
10	52.9		52.9
11	34.3	2.39 dt (12.6, 3.8)	34.2	2.37 dt (12.4, 3.8)
		1.32 (m)		1.32 (m)
12	79.8	3.44 dd (10.8, 4.4)	79.9	3.42 dd (11.6, 3.6)
13	48.4		48.4
14	55.3	1.10 (m)	55.3	1.09 (m)
15	24.7	1.25 (m)	24.7	1.25 (m)
		1.68 (m)		1.68 (m)
16	25.5	1.68 (m)	25.5	1.68 (m)
		2.04 (m)		2.08 (m)
17	52.2	1.48 (m)	52.3	1.44 (m)
18	9.2	0.77 (3H, s)	9.2	0.76 (3H, s)
19	16.2	1.30 (3H, s)	16.2	1.29 (3H, s)
20	44.9	1.80 (m)	45.0	1.78 (m)
21	65.5	3.47 br. t (11.6)	66.1	3.40 br. t (12.0)
		3.86 dd (11.6, 5.2)		3.85 dd (12.0, 5.2)
22	68.3	3.89 dd (10.4, 4.8)	68.7	3.82 dd (11.2, 4.8)
23	40.8	1.71 dd (12.8, 4.4)	39.3	1.89 dd (12.8, 4.8)
		1.93 br. t (12.8)		1.99 br. t (12.8)
24	75.5		80.1
25	52.3	2.92 dd (12.0, 8.8)	82.2
26	178.2		179.9
27	33.6	2.41 (m)	42.3	2.86 dd (13.6, 6.4)
		1.83 (m)		1.72 dd (13.6, 9.2)
28	21.1	1.33 (3H, s)	17.0	1.31 (3H, s)
29	75.8	4.46 dt (10.0, 5.8)	75.2	4.54 dt (9.2, 6.2)
30	21.1	1.37 d (3H, 6.0)	22.0	1.33 d (3H, 6.0)