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In order to determine new minor natural cardenolide glycosides as cytotoxic candidates, we isolated six new cardenolide glycosides together with four known ones, which had never previously been reported in the genus, by bioassay-guided separation from the 75% ethanol extract of Streptocaulon
From remaining aqueous fraction of the roots of Streptocaulon juventas, one new cardiac glycoside named periplogenin 3-O-β-gentiobioside (1) together with six known ones (2-7) were isolated. Their relative structures were elucidated based on NMR spectroscopic
Chemical investigation on the 75% ethanol extract of the roots of Streptocaulon juventas afforded two new cardiac glycosides, digitoxigenin 3-O-[O-β-D-glucopyranosyl-(1 → 4)-2-O-acetyl-β-D-digitalopyranoside] (1) and periplogenin 3-O-[O-β-D-glucopyranosyl-(1 → 4)-O-β-D-glucopyranosyl-(1 →
A series of cardiac glycosides were isolated and identified from the anti-tumor fraction of the root of Streptocaulon juventas in previous studies. In the present research, the cytotoxic activities of the 43 cardiac glycosides on three cell lines, human lung A549 adenocarcinoma cell, large cell lung
The present study was designed to develop a practical strategy to tackle the problem of lacking standard compounds and limited references for identifying structure-related compounds in Streptocaulon griffithii Hook. f., especially those in trace concentrations, with a focus on antitumor activity.
Phytochemical investigation of the roots of Streptocaulon griffithii afforded a novel dipeptide, streptin (1), a new hemiterpenoid, (R)-3-ethyl-4-methylpentyl-beta-rutinoside (2), and a new disaccharide, 1-methoxyl-4-O-beta-glucopyronosyl-beta-digitoxose (3), along with five known compounds. Their
Six cardenolides were isolated from the anti-tumor active fraction of the 75% ethanol extract of Streptocaulon juventas (Asclepiadaceae), mainly found in southwest of China. These were named 1α, 14β-dihydroxy-5β-card-20 (22)-enolide 3-O-[O-β-D-glucopyranosyl-(1→2)-β-D-digitalopyranoside] (1),
Non-small cell lung cancer is the most common type of lung cancer and the most common cause of cancer-related death in humans. TXA9, which is a natural product separated from an anti-tumor-active fraction of the roots of Streptocaulon juventas, may possess potent anti-proliferative activity
Epilepsy is a common chronic disease of the central nervous system that can last for years or even decades, causing serious adverse effects on the body, mind, and psychology of patients. Traditional antiepileptic drugs can effectively control seizures, but because of large individual differences,