The present invention concerns prodrugs of opioid analgesics and pharmaceutical compositions containing such prodrugs. Methods for providing more consistent pain relief by increasing the bioavailability of the opioid analgesic with the aforementioned prodrugs are provided. The invention also provides for decreasing the adverse GI side effects of opioid analgesics.
Activation of Sirtuin 2 Inhibitors Employing Photoswitchable Geometry and Aqueous Solubility
作者:Christoph W. Grathwol、Nathalie Wössner、Steven Behnisch‐Cornwell、Lukas Schulig、Lin Zhang、Oliver Einsle、Manfred Jung、Andreas Link
DOI:10.1002/cmdc.202000148
日期:2020.8.5
derivatization with long‐chain fatty acids yielded potent sirtuin2inhibitors, featuring another intriguing aspect of azo‐based photoswitches. In these compounds, switching to the Z isomer increased aqueoussolubility and thereby enhanced biological activity by up to a factor of 21. The biological activity of two compounds was confirmed by hyperacetylation of sirtuin specific histone proteins in a cell‐based activity
We report the synthesis of a novel C3-symmetrical multiphotochromic molecule bearing three azobenzene units at positions 1, 3, 5 of the central phenyl ring. The unique geometrical design of such a rigid scaffold enables the electronic decoupling of the azobenzene moieties to guarantee their simultaneous isomerization. Photoswitching of all azobenzenes in solution was demonstrated by means of UV-vis
Azobenzene-Based Amino Acids for the Photocontrol of Coiled-Coil Peptides
作者:Niek S. A. Crone、Niek van Hilten、Alex van der Ham、Herre Jelger Risselada、Alexander Kros、Aimee L. Boyle
DOI:10.1021/acs.bioconjchem.2c00534
日期:2023.2.15
non-natural aminoacids, APhe1 and APhe2, are based on phenylalanine and differ in the presence of a carboxylic acid group. These have previously been demonstrated to modulate protein activity. When incorporated into peptide K3, coiled-coil binding strength was affected upon isomerization, with the two variants differing in their most folded state. The third azobenzene-containing aminoacid, APgly, is
卷曲螺旋肽是高亲和力、选择性、自组装结合基序,使其成为制备功能性生物材料的有吸引力的成分。盘绕线圈自组装的光控允许精确定位它们的活动。为了合理探索模型卷曲螺旋中的光活性,制备了三种含偶氮苯的氨基酸并将其取代到 E 3 / K 3卷曲螺旋异二聚体的疏水核心中。两种非天然氨基酸APhe1和APhe2基于苯丙氨酸,并且在存在羧酸基团时有所不同。这些先前已被证明可以调节蛋白质活性。当掺入肽 K 3时, 卷曲螺旋结合强度受到异构化的影响,两种变体的最大折叠状态不同。第三种含偶氮苯的氨基酸APgly以苯基甘氨酸为基础,用于研究氨基酸大小对光异构化的影响。当APgly掺入卷曲螺旋时,在反式到顺式异构化时观察到折叠常数降低 4.7 倍——所有三种氨基酸的最大差异。从理论上讲,省略偶氮苯和α-碳之间的亚甲基可以同时定位APgly的二氮烯更接近疏水性氨基酸并减少氨基酸可能的旋转,分子动力学模拟支持这些假设。这
α,α-Difluorophosphonomethyl azobenzene derivatives as photo-regulated phosphoamino acid analogs. 1. Design and synthesis
作者:Seung Bum Park、Robert F. Standaert
DOI:10.1016/s0040-4039(99)01400-8
日期:1999.9
A series of novel, photoregulated phosphoamino acid analogs based on an azobenzene core bearing an alpha,alpha-difluoromethylphosphonate as a hydrolytically stable phosphate isostere have been prepared with N-Fmoc protection for use in peptide synthesis. Classes of reagents analogous to both phosphotyrosine and phosphoserine/threonine were prepared by a common route employing a nitrosoarene/aniline condensation to form the azo linkage and the Cu(I)promoted coupling of an iodoarene with (diethylphosphono)difluoromethyl cadmium bromide (Burton's method) to introduce the phosphonate moiety. (C) 1999 Elsevier Science Ltd. All rights reserved.