Table 2.

¹³C NMR data (δ in ppm) of compounds 1–3

No.	1a	2a	3b
	δC, type	δC, type	δC, type
1	136.0, C	43.5, CH	145.2, C
2	34.4, CH	33.7, CH	126.0, C
3	44.1, CH2	40.8, CH2	125.4, CH
4	70.0, CH	71.9, CH	126.1, CH
5	61.4, CH	60.9, CH	157.8, C
6	40.0, C	39.7, C	50.1, C
7	56.7, CH2	51.7, CH2	47.8, CH2
8	47.5, C	136.9, C	50.2, C
9	145.9, C	139.8, C	144.7, C
10	58.9, CH2	59.9, CH2	71.1, CH2
11	20.7, CH3	19.4, CH3	173.9, C
12	23.9, CH3	25.6, CH3	71.3, CH2
13	30.9, CH3	31.6, CH3	27.2, CH3
14	26.1, CH3	59.2, CH2	24.9, CH3
15	72.6, CH2		70.8, CH2

^aRecorded at 150 MHz, Recorded in CD₃OD

^bRecorded at 125 MHz, Recorded in CD₃OD