Caesalpinone A, a new type of gorgonane sesquiterpenoid containing an unprecedented 1, 15-bridge, from the pods of Caesalpinia spinosa Kuntze. 

 -  Fitoterapia, 112, p.233-236, 2016 .
<br/><br/> Caesalpinone A (1), a new type of gorgonane sesquiterpenoid containing an unprecedented 1,15-bridge, along with ten known sesquiterpenoids (2 ? 11)were isolated from the pods of Caesalpinia spinosa Kuntze (Tara). The structure of caesalpinone A was elucidated based on its 1D and 2D NMR spectra. The absolute configuration of 1 was assigned by the comparison of the experimental and calculated electronic circular dichroism spectra. Compound 1 was evaluated for the inhibitory activities against five human tumor cell lines. The sesquiterpenoids of isodaucane skeleton and caryolane skeleton were isolated from Caesalpinia genus for the first time. Compounds 5-9 were firstly reported from Tara. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TARA<br/>CAESALPINIA SPINOSA<br/>SESQUITERPENOID<br/>CAESALPINONE A