Table 3. ¹³C NMR Data for Keikipukalides B–E (2–5).

position	2b	3a	4a	5b
1	47.4, CH	40.8, CH	49.2, CH	36.7, CH
2	28.7, CH2	30.7, CH2	31.2, CH2	33.1, CH2
3	161.6, C	162.4, C	163.0, C	162.3, C
4	123.4, C	123.3, C	124.5, C	123.2, C
5	104.7, CH	105.1, CH	106.2, CH	104.5, CH
6	149.5, C	149.7, C	150.3, C	149.8, C
7	54.7, CH	54.4, CH	75.4, CH	54.8, CH
8	56.3, C	56.8, C	74.3, C	56.8, C
9	40.1, CH2	40.4, CH2	37.9, CH2	39.9, CH2
10	81.0, CH	80.8, CH	75.8, CH	77.7, CH
11	72.9, CH	73.9, CH	67.7, CH	151.1, CH
12	127.4, C	124.1, C	58.2, C	134.8, C
13	145.6, CH	151.6, CH	121.1, CH	68.6, CH
14	70.6, CH	30.4, CH2	134.4, CH	35.7, CH2
15	143.1, C	144.8, C	144.6, C	148.5, C
16	114.8, CH2	113.0, CH2	111.2, CH2	111.3, CH2
17	24.7, CH3	23.7, CH3	21.4, CH3	20.7, CH3
18	184.2, CH	184.4, CH	184.3,CH	184.4, CH
19	20.7, CH3	20.99, CH3c	31.3, CH3	19.7, CH3
20	166.6, C	168.2, C	171.6, C	170.3, C
21	170.6, C	170.6, C	169.0, C	170.5, C
22	21.2, CH3c	21.03, CH3c	20.9, CH3	20.6, CH3
23	169.4, C
24	21.0, CH3c

^aRecorded in CDCl₃ (100 MHz).

^bRecorded in CDCl₃ (125 MHz). Multiplicity determined by HSQC (2 and 5) or HMQC (3 and 4).

^cInterchangeable.