Table 1. NMR Data for Keikipukalide A (1).

position	13C,b type	1Ha (J in Hz)	HMBCa
1	47.1, CH	3.47, m	3, 14
2a	31.0, CH2	3.31, m	1, 3, 4, 14, 15
2b		3.42, m	1, 15
3	162.2, C
4	124.3, C
5	105.6, CH	6.47, s	3, 4, 6
6	149.2, C
7	54.6, CH	4.01, s	5, 6, 8
8	56.9, C
9a	40.4, CH2	2.09, dd (15.6, 1.8)	8, 10, 11, 19
9b		2.58, dd (15.6, 4.2)	7, 8
10	75.3, CH	4.78, dd (4.0, 2.7)
11	64.1, CH	4.09, s	10, 12, 20
12	58.0, C
13	115.6, CH	5.14, dd (16.3, 1.5)	1, 14, 20
14	145.8, CH	7.41, dd (16.3, 4.4)	15
15	143.5, C
16a	113.6, CH2	4.56, s	1, 17
16b		4.97, s
17	23.2, CH3	1.70, s	1, 15, 16
18	184.3, CH	9.89, s	4, 5
19	21.3, CH3	1.23, s	7, 8, 9
20	169.0, C

^aCDCl₃, 400 MHz.

^bCDCl₃, 100 MHz, multiplicity determined by HMQC.