Author/Authors :
Sarot Cheenpracha، نويسنده , , Rattikan Srisuwan، نويسنده , , Chatchanok Karalai، نويسنده , , Chanita Ponglimanont، نويسنده , , Suchada Chantrapromma، نويسنده , , Kan Chantrapromma، نويسنده , , Hoong Kun Fun، نويسنده , , Shazia Anjum، نويسنده , , Atta-ur-Rahman، نويسنده ,
Abstract :
Nine new cassane-type diterpenes, named taepeenin A–I, and two new norcassane-type diterpenes, named nortaepeenin A–B, were isolated from the stems and roots of Caesalpinia crista along with three known diterpenes: vinhaticoic acid, methyl vinhaticoate and ent-11β-hydroxy-rosa-5,15-diene. Their structures were elucidated on the basis of spectroscopic analysis. In addition, the structure of taepeenin A was confirmed by X-ray diffraction analysis.
Keywords :
Taepeenin , Caesalpinia crista , Cassane diterpenes , Nortaepeenin
