Author/Authors :
Yang، نويسنده , , Xing-Wei and Qin، نويسنده , , Xu-Jie and Zhao، نويسنده , , Yun-Li and Lunga، نويسنده , , Paul K. and Li، نويسنده , , Xiao-Nian and Jiang، نويسنده , , Shi-Zhi and Cheng، نويسنده , , Gui-Guang and Liu، نويسنده , , Ya-ping and Luo، نويسنده , , Xiao-Dong، نويسنده ,
Abstract :
Three novel ring-fused monoterpenoid indole alkaloids, alstolactines A–C (1–3), were isolated from the long-term stored leaves of Alstonia scholaris. Their structures were identified on the basis of extensive spectroscopic data and X-ray diffractions. Moreover, the absolute configurations of these related structures were indicated by the crystal X-ray diffractions (Mo Kα) of 1a, a chlorinated derivative of 1.
Keywords :
indole alkaloid , Alstonia scholaris , Alstolactines A–C , absolute configuration
