Isolation and Biomimetic Synthesis of Anti-inflammatory Stilbenolignans from Gnetum cleistostachyum
作者:Chun-Suo Yao、Mao Lin、Lin Wang
DOI:10.1248/cpb.54.1053
日期:——
One new stilbenolignan, gnetucleistol F (1), and four known stilbenolignans, gnetofuran A (2), lehmbachol D (3), gnetifolin F (4) and gnetumontanin C (5) were isolated from the lianas of Gnetum cleistostachyum C. Y. CHENG (Gnetaceae). Their structures and relative configurations were determined by means of spectroscopic evidence. Compounds 1, 2, 3 and 4 were synthesized for the first time on the basis of their biogenetic pathway, and their possible biomimetical synthetic mechanisms were discussed. The pharmacological activities of all stilbenolignans have been tested. Among them, 1, 2, 3, 4 and 5 showed moderate inhibitory activities on TNF-α and 1 also showed potent inhibitory activity on malondialdehyde.
从Gnetum cleistostachyum C. Y. CHUNG(石竹科)的藤本植物中分离出一种新的石竹烯木酚(gnetucleistol F)(1)和四种已知的石竹烯木酚(gnetofuran A)(2)、lehmbachol D (3)、genetifolin F (4)和genetumontanin C (5)。通过光谱证据确定了它们的结构和相对构型。首次根据其生物发生途径合成了化合物 1、2、3 和 4,并讨论了其可能的生物模拟合成机制。对所有链烯木质素的药理活性进行了测试。其中,1、2、3、4 和 5 对 TNF-α 具有中度抑制活性,1 还对丙二醛具有强效抑制活性。