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. Author manuscript; available in PMC: 2008 Nov 5.
Published in final edited form as: Tetrahedron. 2007 Nov 5;63(45):11030–11039. doi: 10.1016/j.tet.2007.08.041

Table 1.

1H- and 13C-NMR chemical shiftsa of tripyrrindiones 1 and 2.

13C-NMR
 1H-NMR
Carbon 1
 2
 1
 2
CDCl3 (CD3)2SO CDCl3 CDCl3 (CD3)2SO CDCl3
1/14 C=O 173.8 172.6 174.4 ? ? ?
2/13 =C- 132.6 132.2 132.6 ? ? ?
21 CH2CH3 17.7 17.7 8.3 2.18 (q)b 2.27 (q)b 1.72 (s)
22 CH3 13.8 14.6 ? 0.95 (t)b 1.12 (q)b ?
3/12 =C- 146.8 146.9 141.4 ? ? ?
31 CH2/CH3 17.7 17.6 9.9 2.46 (q)b 2.48 (q)b 2.07 (s)
32 CH3 15.6 16.4 ? 1.17 (t)b 1.02 (t)b ?
4/11 =C- 131.1 131.0 130.3 ? ? ?
5/10 =CH- 98.8 97.6 98.8 6.04 (s) 5.93 (s) 6.03 (s)
6/9 =C- 130.1 129.7 126.1 ? ? ?
7/8 =C- 128.7 128.2 128.4 ? ? ?
71 CH2 16.8 17.2 17.6 2.56 (q)b 2.50 (q)b 2.53 (q)b
72 CH3 16.5 17.1 16.5 1.19 (t)b 1.04 (t)b 1.17 (t)b
15/17 NH ? ? ? 9.73 (brs) 10.10 (brs) 9.5 (brs)
16 NH ? ? ? 10.46 (brs) 10.73 (brs) 10.6 (brs)
a

Chemical shifts in δ, ppm for 10-3 M solutions at 22°C.

b

J = 7.5 Hz.