Sesquiterpenoids, phenolic and lignan glycosides from the roots and rhizomes of Clematis hexapetala Pall. and their bioactivities
作者:Lu Cai、Si-Yuan Shao、Shao-Wei Han、Shuai Li
DOI:10.1016/j.bioorg.2020.104312
日期:2020.11
Approximately 17 compounds were isolated from a 60% EtOH aqueous extract of the roots and rhizomes of Clematis hexapetala Pall., including three new guaianolide sesquiterpenoids with 5/7/5-fused rings and 3S-configuration (1-3), five new prenylated tetra-substituted phenolic glycosides (4-8) with 6/6-fused 9H-benzopyran skeleton (5) and 6/7-fused 7,10-dihydro-benzoxepin skeleton (6-8), one new isoferulyl
大约17化合物从的根和根茎的60%乙醇水溶液提取物中分离威灵仙hexapetala帕尔,包括用5/7/5稠合环和3三个新guaianolide倍半萜。小号-构型(1 - 3),五新异戊二烯化的四取代的酚苷(4 - 8)配有6/6-稠9 ħ苯并吡喃骨架(5)和6/7-稠-7,10-二氢苯并氧杂七骨架(6 - 8),一个新的isoferulyl葡糖苷(9),两个新Furofuran型木脂二葡糖苷(10 - 11)和六个已知化合物。通过光谱数据和电子圆二色谱(ECD)分析,结合改进的Mosher方法,阐明了新化合物的化学结构。推测了烯丙基化的四取代酚可能的生物合成关系。在体外测定中,化合物16表现出中等的TNF-α分泌抑制活性,IC 50值为3.419μM。化合物14 - 16显示强效PTP1B酶抑制活性用的48.30〜86.00%的抑制率。化合物16表现出显着的PTP1B酶抑制作用,IC 50值为4