Light induced isomerization of piperlonguminine to scutifoliamide A, isopiperlonguminine and hoffmannseggiamide A

Bao, Narisu; Sun, Zhaorigetu; Baigude, Huricha; Borjihan, Gereltu; Jin, Zhuang

doi:10.1016/j.phytol.2015.09.001

Cited by 2 publications

(1 citation statement)

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“…Many studies on the synthesis of antioxidants are based on the structural modification of plant-derived substances, including piperine, an alkaloid derived from plants in the Piperaceae family [5][6][7], which has received an increasing amount of attention due to its excellent biological and pharmacological activity [6,8,9]. Researchers have demonstrated that the antioxidative activity of piperine is manifested through free radical-quenching effects and a reduction in GSH consumption [10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Radical-Scavenging Activities, and Protective Effects against AAPH-Induced Oxidative Damage in DNA and Erythrocytes of Piperine Derivatives

Qin

Yang

Cao

2020

Journal of Chemistry

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Piperine amino acid derivatives containing phenolic hydroxyl groups were synthesized using piperine as the raw material by amide hydrolysis, amidation, ester hydrolysis, and deacetalization. The obtained products were characterized by mass spectrometry and nuclear magnetic resonance. The antioxidant activity of the piperine derivatives was evaluated by the DPPH and ABTS scavenging rates and the total antioxidant capacity. The results showed that the piperine amino acid (4a–4d) had relatively weak radical-scavenging ability, while the piperine amino acid derivatives (5a–5d) containing phenolic hydroxyl groups had significant radical-scavenging effects. In addition, the total reducing ability of 5a–5d was better than that of piperine. The study also found that piperine derivatives containing phenolic hydroxyl groups played an important role in inhibiting oxidative damage in DNA and erythrocytes.

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