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Table 1 NMR parameters of commafric A in CD2Cl2:1H (600 MHz) and 13C (150 MHz) NMR, HMBC, H2BC, ADEQUATE-1,1, and ROESY

From: Anti-proliferative activity of a novel tricyclic triterpenoid acid from Commiphora africana resin against four human cancer cell lines

No.δCδH (multi, J in Hz)HMBC (H → C)dH2BC
(H → [H]C)d
1,1-ADEQUATE
([H]C → C)d
Key ROESY
138.11.72 (dt, J = 13.3, 3.1)/1.32 (mc)252′/2′/2′/″, 25, 2′/″
227.31.67 (mc)31′, 1″, 31′, 1″, 31′/″, 25
376.24.02 (dd, J = 11.2, 4.7)1″, 2″, 5, 242′/2′/2′/″, 5
452.9 2′, 2″, 3, 5, 24 3, 5, 24 
546.61.88 (mc)24, 256′, 6″6′, 6″3, 9
625.82.05 (mc)/1.80 (mc) 5, 75, 77, 24, 25
7114.05.16 (dt, J = 5.1, 2.6)6′6′, 6″6′, 6″14
8151.0 6′/″, 11′/″, 12′/″, 26 7, 9 
959.52.01 (mc)1′, 5, 11′ ,12′/″ ,2511′, 11″11′, 11″1″, 5, 11″, 12″
1034.1 1′/″, 5, 25 1′, 1″, 5, 9, 25 
1123.11.25 (mc)/1.53 (mc)12′/12″9, 12′, 12″25, 26/9
1233.01.25 (mc)/1.48 (mc)11′/″, 14, 26a11′, 11″11′, 11″26/9, 15′/″, 27
1348.3 12″, 14, 26, 27 12′, 12″, 14, 26 
1441.21.36 (mc)9, 12″, 26, 2715′, 2715′, 276′, 6″, 7
1533.01.34 (mc)/1.00 (mc)16″, 27a14, 16′, 16″14, 16′, 16″ 
1626.62.02 (mc)/1.87 (mc)15′/″, 17b15″, 1715′, 15″, 17 
171255.04 (ddq, J = 7.5, 6.3, 1.3)15′/″, 16′/″, 19′/″, 2816′, 16″, 28*16′, 16″ 
18135 16′/″, 19′/″, 28 17, 19′, 19″, 28 
1940.01.96 (mc)/1.93 (mc)20″, 28, 2920′, 20″20′, 20″ 
2026.72.14 (mc)/2.09 (mc)21b19′, 19″, 29**19′, 19″, 21 
21129.05.30 (t, J = 7.0)19′/″, 20′/″, 29, 30′/19′, 19″, 29*20′, 20″29
22134.0 20′/″, 29, 30′/ 21, 29, 30′, 30″ 
23181.0 3, 5, 24   
2410.71.18 (s)3, 5  6′, 25
2514.10.75 (s)1″, 5  1′, 2′/″, 6′, 11′, 24
2626.80.91 (s)12′/b  11′, 12′
2715.10.86 (d, J = 6.8)14, 15′/141412″
2816.41.57 (s)17, 19′/   
2921.41.77 (s)21, 30′/  21
3061.54.07 (d, J = 11.7)/4.17 (d, J = 11.7)21, 29   
  1. aOverlap between C12 and C15
  2. bOverlap between C16, C20, and C26
  3. cOverlapping multiplets in 1H
  4. dCorrelations listed on each receiving carbon row from the denoted proton(s)