Topic
Indole alkaloid
About: Indole alkaloid is a research topic. Over the lifetime, 868 publications have been published within this topic receiving 15401 citations. The topic is also known as: indole alkaloids.
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TL;DR: Under acidic conditions dihydromancunine (2) can be obtained directly from 3β-dihydrovincoside (1c) by cyclisation of N-4 to C-21, whereas 3α-strictosidine (1a) affords a novel N-1 cyclised derivative, nacycline (6).
Abstract: Under acidic conditions dihydromancunine (2) can be obtained directly from 3β-dihydrovincoside (1c) by cyclisation of N-4 to C-21, whereas 3α-strictosidine (1a) affords a novel N-1 cyclised derivative, nacycline (6).
11 citations
TL;DR: The antibacterial activity of these extracts indicates that n-BuOH and EtOAc extracts possess the strongest activity.
11 citations
TL;DR: In this paper, two new methyl chanofruticosinate-type indole alkaloids, flavisiamines E (1) and F (2), and an aspidofractinine-type INDO alkaloid, fruticosiamine A (3), were isolated from Kopsia flavida and K. fruticosa, respectively and their structures were elucidated by NMR spectral analysis using 2D techniques.
Abstract: Two new methyl chanofruticosinate-type indole alkaloids, flavisiamines E (1) and F (2), and an aspidofractinine-type indole alkaloid, fruticosiamine A (3), have been isolated from Kopsia flavida and K. fruticosa, respectively and their structures were elucidated by NMR spectral analysis using 2D techniques.
11 citations
TL;DR: A new dimeric monoterpene indole alkaloid polonidine A, along with five known compounds, were isolated from Penicillium polonicum TY12 and exhibited moderate cytotoxic activities and moderate antibacterial activity against Bacillus subtilis with MIC of 4.0 μg/mL.
11 citations
TL;DR: In this article, the epimeres en 16 des desethylidene-20 des-[hydroxy-«2» ethyl]-4 methyl-4 vinoxine and dihydro-19,20 vinoxide are given.
Abstract: Syntheses des epimeres en 16 des desethylidene-20 des-[hydroxy-«2» ethyl]-4 methyl-4 vinoxine et dihydro-19,20 vinoxine
11 citations