Table 1.

¹H and ¹³C NMR data (600 and 150 MHz; CD₃OD) and key HMBC correlations in compound 1.

C. No.	13C (δ)	1H (δ)	DEPT	C. No.	13C (δ)	1H (δ)	DEPT
1	40.1	0.99, m; 1.71, m	CH2	16	31.7	1.35, m	CH2
2	28.0	1.57, m	CH2	17	50.4	1.63, m	CH
3	79.6	3.16, m	CH	18	180.1	-	C
4	41.9	-	C	19	15.1	1.03, s	CH3
5	56.9	0.73, m	CH	20	39.6	1.67, m	CH
6	19.4	1.56, m	CH2	21	16.7	0.88, d, J = 5.5 Hz	CH3
7	126.9	5.25, m	CH	22	35.6	1.42, m	CH2
8	139.7	-	C	23	33.3	1.52, m	CH2
9	54.4	2.21, m	CH	24	40.4	2.33, m	CH
10	38.3	-	C	25	152.0	-	C
11	22.1	1.46, m	CH2	26	110.2	4.62/4.73, each d, J = 1.6 Hz	CH2
12	30.8	1.94, m	CH2	27	19.5	1.73, s	CH3
13	57.5	-	C	28	16.6	0.99, overlap	CH3
14	48.5	3.06, m	CH	29	16.1	0.77, s	CH3
15	26.9	1.08, m	CH2	30	28.6	0.97, overlap	CH3