Welcome to China Surfactant Detergent & Cosmetics, Today is

China Surfactant Detergent & Cosmetics ›› 2021, Vol. 51 ›› Issue (11): 1102-1108.doi: 10.3969/j.issn.1001-1803.2021.11.010

• Development and application • Previous Articles     Next Articles

Study on synthesis and whitening activity of isoferic acid amides

Luo Tianji,Mei Zikun,Song Jingjiu,Zhu Jun()   

  1. School of Science, Beijing Technology and Business University, Beijing 100048, China
  • Received:2021-03-19 Revised:2021-10-28 Online:2021-11-22 Published:2021-11-19
  • Contact: Jun Zhu E-mail:zhujun@btbu.edu.cn

Abstract:

Using isoferulic acid and amino acid ethyl ester hydrochloride as raw materials, 1- (3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC HCl) and 1-hydroxybenzotriazole (HOBt) as catalysts, isoferuloyl-alanine ethyl ester (a), isoferuloyl-phenylalanine ethyl ester (b), isoferuloyl-leucine ethyl ester (c), isoferuloyl-isoleucine ethyl ester (d), isoferuloyl-valine ethyl ester (e), isoferuloyl-methionine ethyl ester (f) were synthesized by EDC condensation. The structure of the products was characterized by nuclear magnetic resonance (1H NMR) and high performance liquid chromatography-mass spectrometry (HPLC-MS). The whitening activity of ethyl isoferulyl-amino acid was detected by two in vitro non-cellular experiments of scavenging DPPH free radicals and inhibiting tyrosinase activity. It can be seen from the experimental results that the six isoferulyl amino acids have a good ability to scavenge DPPH free radicals, which are higher than that of isoferulic acid. Isoferulyl-alanine ethyl ester has the strongest ability to scavenge DPPH free radicals. Its IC50 value reaches 1.13 mg/mL. It also has a certain inhibitory effect on tyrosinase activity, of which isoferulyl-alanine ethyl ester has the best effect, with the inhibition rate of 95.43%. The results of B16 melanoma cells show that isoferulyl-alanine ethyl ester, isoferulyl-phenylalanine ethyl ester and isoferulyl-methionine ethyl ester have better inhibitory effects on melanin than isoferulic acid at 2 mg/mL mass concentration and its irritation is reduced. The differences in the efficacy of the six products may be due to the different types of side chain amino acids on each substance. In the follow-up investigation, the biological activity of isoferulyl amino acid derivatives can be analyzed to clarify the relationship between the molecular structure of the substance and the physiological activity, and to increase the transdermal absorption effect and safety of the substance in animal experiments.

Key words: isoferulic acid, isoferulic acid ethyl ester, DPPH radical, tyrosinase, B16 melanoma cells

CLC Number: 

  • TQ658