Table 2 1 H in Gossypolhemiquinone, a dimeric sesquiterpenoid identified in cotton (Gossypium)

<p><b>Table 2</b> 1 H chemical shifts for gossypolhemiquinone (GHQ) (<b>9</b>) compared to the dimeric sesquiterpenoids gossypol (Goss) (<b>1</b>) and gossypolone (GQ) (<b>2</b>) (for carbon assignments refer to Fig. 1).</p><table><tr><th>C#</th><th>Type</th><th>Goss (<b>1</b>)</th><th>GHQ (<b>9</b>)</th><th>C#</th><th>Type</th><th>GQ (<b>2</b>)</th><th>GHQ (<b>9</b>)</th></tr><tr><th></th><td></td><td><i>δ</i></td><td><i>δ</i></td><td></td><td></td><td><i>δ</i></td><td><i>δ</i></td></tr><tr><th>1</th><td>C1-OH</td><td>5.89</td><td>6.60 a</td><td>21</td><td>C21-OH</td><td>6.59</td><td>6.39 a</td></tr><tr><th>4</th><td>Ar-H</td><td>7.77</td><td>7.65</td><td>22</td><td>C22-OH</td><td>13.01</td><td>12.97</td></tr><tr><th>6</th><td>C6-OH</td><td>6.39</td><td>6.37 a</td><td>26</td><td>HC=O</td><td>10.58</td><td>10.50</td></tr><tr><th>7</th><td>C7-OH</td><td>15.10</td><td>15.05</td><td>27</td><td>Ar-CH3</td><td>2.04</td><td>1.97</td></tr><tr><th>11</th><td>CHMe2</td><td>3.88</td><td>3.82</td><td>28</td><td>CHMe2</td><td>4.12</td><td>4.05</td></tr><tr><th>12</th><td>CH3</td><td>1.53</td><td>1.48</td><td>29</td><td>CH3</td><td>1.42</td><td>1.39</td></tr><tr><th>13</th><td>CH3</td><td>1.53</td><td>1.53</td><td>30</td><td>CH3</td><td>1.44</td><td>1.42</td></tr><tr><th>14</th><td>HC=O</td><td>11.1</td><td>10.90</td><td></td><td></td><td></td><td></td></tr><tr><th>15</th><td>Ar-CH3</td><td>2.13</td><td>2.19</td><td></td><td></td><td></td><td></td></tr></table><p>^a Assignments for GHQ (<b>9</b>) C1-OH, C6-OH and C21-OH may be interchanged.</p><p>Notes:</p>Published as part of <i>Stipanovic, Robert, Puckhaber, Lorraine, Jr., James Frelichowski, Esquivel, Jesus, Westbrook, John, O'Neil, Mike, Bell, Alois, Dowd, Michael, Hake, Kater & Duke, Sara, 2016, Gossypolhemiquinone, a dimeric sesquiterpenoid identified in cotton (Gossypium), pp. 167 in Phytochemistry 122</i> on page 167, DOI: 10.1016/j.phytochem.2015.12.009, <a href="http://zenodo.org/record/10485477">http://zenodo.org/record/10485477</a>