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Indole Alkaloids From the Twigs of Kopsia officinalis
The genus Kopsia, belonging to the family Apocynaceae, is well known as a rich source of indole alkaloids that often possess unusual skeletons and significant bioactivities [1–3]. K. officinalisExpand
Two new flavans from the trunk and leaves of Horsfieldia glabra
TLDR
Two new flavans, (2R, 4R)-4′-hydroxy-3′,5′-methyl-6,7-methylenedioxy-4-O-2′-cycloflavan and 4–7 were assessed for their cytotoxicity against five human cancer cell lines, and the result showed that they had no activity. Expand
Chemical Constituents of Plants from the Genus Psychotria
Psychotria is a genus of ca. 1500 species in the family Rubiaceae. Up to now, 41 species of the Psychotria genus have been chemically investigated, and 159 compounds, including alkaloids of indole,Expand
A new sesquiterpenoid from Polyalthia petelotii
TLDR
The isolates were assessed for their cytotoxicity against five human tumour lines, and the result showed that only 2 displayed weak inhibitory activity. Expand
A New 5(6→7)abeo-sterol from the twigs of Podocarpus fleuryi
Abstract A new 5(6→7)abeo-sterol with rarely reported [6–5-6–5]-fused rings, 3β,5β,6-trihydroxyl-B-norsitostane (1), along with 10 known compounds were isolated from the twigs of Podocarpus fleuryi.Expand
Optimization by response surface analysis of the extraction of trans-resveratrol from Polygonum cuspidatum and a study of its antibacterial effects
The optimal conditions for the extraction of trans-resveratrol from the herb Polygonum cuspidatum have been obtained by response surface analysis. When extracted with 79% ethanol for 1.1 h at 53Expand