Progress in Synthesis and Physiological Activity of Berberine Derivatives

Abstract

Berberine, with a variety of pharmacological effects, is a quaternary ammonium salt from the group of isoquinoline alkaloids, which mainly exist in ranunculaceae, rutaceae and berberidaceae. Now some literatures report that berberine derivatives have more accordingly physiological activity than berberine and enlarge the application fields of berberine. In this paper, the biological and chemical synthesis and the biological activity of berberine and its derivatives are reviewed, as well as the prospects of a new synthetic strategy of berberine derivatives.

Studies on the Dyeing and Functional Properties of Modified Berberine for a Variety of Fabrics

“…The system was slowly heated up to 190 °C for 15 min in a high-temperature electric furnace. 18 After cooling to room temperature, the modified berberine was stored in the dark for further experiments without further purification (yield up to 95%).…”

Effects of Oxidation Curing of Polycarbosilane on Dielectric and Microwave Absorption Properties of PDCs‐SiC Ceramics

“…The results indicated that both the real and imaginary parts of complex permittivity increased after incorporation of dual‐layer interphase . Ding et al . investigated influence of pyrolysis process on dielectric properties of polycarbosilane‐derived silicon carbide ceramic powders and found that the permittivity of PCS‐SiC increases with increased pyrolysis temperature.…”