来自苍耳的两种新的桉烷型倍半萜内酯。
Two new eremophilanolides from Xanthium sibiricum.
作者信息
Zhang Xiao-Qi, Ye Wen-Cai, Jiang Ren-Wang, Yin Zhi-Qi, Zhao Shou-Xun, Mak Thomas C W, Yao Xin-Sheng
机构信息
Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou 510632, PR China.
出版信息
Nat Prod Res. 2006 Nov;20(13):1265-70. doi: 10.1080/14786410600906780.
Two new eremophilanolides, sibiriolides A (1) and B (2), were isolated from the aerial parts of Xanthium sibiricum. The structures of the new compounds were identified as 4S,5R,7R,8R, 11R-2-oxo-1(10)-eremophilen-12,8-olide (1) and 4S,5R,7R,8R,11S-2-oxo-1(10)-eremophilen-12,8-olide (2) by HREIMS and NMR spectroscopic techniques in combination with X-ray crystallographic analysis and CD measurements.
从苍耳的地上部分分离出两种新的桉烷型倍半萜内酯，西伯利亚内酯A（1）和B（2）。通过高分辨电子轰击质谱（HREIMS）、核磁共振（NMR）光谱技术，并结合X射线晶体学分析和圆二色（CD）测量，确定了新化合物的结构分别为4S,5R,7R,8R,11R-2-氧代-1(10)-桉烷-12,8-内酯（1）和4S,5R,7R,8R,11S-2-氧代-1(10)-桉烷-12,8-内酯（2）。
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