Author/Authors :
Zhu، نويسنده , , Hucheng and Huan، نويسنده , , Lijun and Chen، نويسنده , , Chunmei and Yang، نويسنده , , Jing and He، نويسنده , , Jiangbo and Chen، نويسنده , , Yong and Yao، نويسنده , , Guangmin and Luo، نويسنده , , Zengwei and Xue، نويسنده , , Yongbo and Zhang، نويسنده , , Yonghui، نويسنده ,
Abstract :
A pair of unprecedented enantiomers (1a/1b) of cyclohexylethanoid bearing an unusual trioxabicyclo[4.2.1]nonane ring, along with two known structurally related cyclohexylethanoids, (+)-rengyolone (2) and cleroindicin E (3), were isolated from the aerial parts of Clerodendrum bungei. The structures and absolute configurations of the enantiomers were determined by comprehensive spectroscopic analysis, single-crystal X-ray diffraction, and quantum mechanical calculation of the electronic circular dichroic (ECD) spectra. The postulated biogenetic pathway of 1a/1b was also discussed.
Keywords :
Clerodendrum bungei , Enantiomer , X-Ray , ECD
