Synthesis of cinnamic amide derivatives and their anti-melanogenic effect in α-MSH-stimulated B16F10 melanoma cells
作者:Sultan Ullah、Dongwan Kang、Sanggwon Lee、Muhammad Ikram、Chaeun Park、Yujin Park、Sik Yoon、Pusoon Chun、Hyung Ryong Moon
DOI:10.1016/j.ejmech.2018.10.025
日期:2019.1
debenzylation of cinnamic amides 45–49 with the anilino moiety provided our desired cinnamic amides 6–10 without inducing the intramolecular Michael addition. Debenzylation of cinnamic amides 43, 48, and 53 with a 2,4-dibenzyloxyphenyl group was also successfully accomplished using BBr3 to give 4, 9, and 14. Among the nine compounds that inhibited mushroom tyrosinase more potently at 25 μM than kojic acid, four
在调节黑色素生物合成的三种酶,酪氨酸酶及其相关蛋白TYRP-1和TYRP-2中,酪氨酸酶是最重要的,因为它能够限制黑色素细胞中黑色素的产生速率。对于治疗由黑色素过量引起的皮肤色素沉着症,酪氨酸酶的抑制是迄今为止最成熟的策略。肉桂酸是一种安全的天然产物,具有(E)-β-苯基-α,β-不饱和羰基,我们先前已证明其在抑制酪氨酸酶中起重要作用。由于肉桂酸相对亲水,这阻碍了它在皮肤上的吸收,因此少了十五种亲水性肉桂酰胺衍生物(1 – 15)被设计为安全且更有效的酪氨酸酶抑制剂,并通过Horner-Wadsworth-Emmons反应合成。使用浓的去苄基化-HCl和乙酸ö苄基-保护的肉桂酰胺40 - 54产生以下三个结果。1)肉桂酰胺类43,48,和53与2,4-组二苄,无论胺类型的酰胺的,产生具有高极性配位化合物。2)肉桂酰胺类40 - 42,44,50 - 52,和54用苄基氨基,或二乙胺基取代产生了所需的脱苄基肉桂酰胺13,5,10