Design, synthesis and reactivity of C2-symmetric azobenzene-based amino acid-bis(propargyl sulfones)
摘要:
C-2-Symmetric azobenzene-amino acid linked bis(propargyl sulfones) 1 and 2 containing stable E azo moiety have been synthesized. Upon irradiation with long wavelength UV these compounds isomerized to the Z-form, whose thermal reisomerization to the E-isomer slowed down considerably Under basic pH, the compounds showed DNA cleavage in mu molar concentrations with the Z-isomers showing better cleaving efficiency. The difference in cleaving efficiency between the Z and the E-isomer is more than the corresponding pair of sulfones without amino acid linker. (C) 2010 Elsevier Ltd. All rights reserved.
研究了N-羧甲基(Cm-)氨基酸合成肽的基本问题。通过用于母体氨基酸的常规方法获得了几种游离Cm-氨基酸的N-保护衍生物及其单酯的N-苄氧羰基(Z)衍生物。在 Cm 氨基酸的任一羧基上形成肽键被证明可以通过常用方法实现,例如碳二亚胺、二环己基碳二亚胺-1-羟基苯并三唑或混合酸酐方法,如使用 Z-Cm 的示例所示-氨基酸衍生物作为羧基组分。另一方面,使用Cm-氨基酸二酯作为氨基组分的肽不能通过上述常用方法制备。最终通过酰氯法得到所需化合物。
C2-Symmetric azobenzene-amino acid conjugates and their inhibition of Subtilisin Kexin Isozyme-1
作者:Amit Basak、Debarati Mitra、Amit K. Das、Dayani Mohottalage、Ajoy Basak
DOI:10.1016/j.bmcl.2010.04.101
日期:2010.7
C-2-Symmetric azobenzene-amino acid/peptide hybrids containing stable E-azo moiety have been synthesized. Upon irradiation with long wavelength UV, these compounds isomerized to the Z-form, whose thermal reisomerization to the E isomer slowed down considerably. These compounds exhibited in vitro moderate to strong inhibition of mammalian cellular protease Subtilisin Kexin Isozyme-1, also called Site 1 Protease, which plays vital roles in cholesterol synthesis, lipid metabolism, bone formation, and viral infections. (C) 2010 Elsevier Ltd. All rights reserved.