Structural Re-engineering of the α-Helix Mimetic JY-1-106 into Small Molecules: Disruption of the Mcl-1-Bak-BH3 Protein-Protein Interaction with 2,6-Di-Substituted Nicotinates
作者:Brandon Drennen、Jacob A. Scheenstra、Jeremy L. Yap、Lijia Chen、Maryanna E. Lanning、Braden M. Roth、Paul T. Wilder、Steven Fletcher
DOI:10.1002/cmdc.201500461
日期:2016.4.19
with significantly decreased molecular weights. The most potent inhibitor 2‐(benzyloxy)‐6‐(4‐chloro‐3,5‐dimethylphenoxy)nicotinic acid (1 r: Ki=2.90 μm) likely binds in the p2 pocket of Mcl‐1 and engages R263 in a salt bridge through its carboxylicacid, as supported by 2D 1H–15N HSQC NMR data. Significantly, inhibitors were easily accessed in just four steps, which will facilitate future optimization
Expedient access to pre-organized α-helix mimetics based on an isocinchomeronic acid core
作者:Brandon Drennen、Alexander D. MacKerell、Steven Fletcher
DOI:10.1016/j.tetlet.2015.10.020
日期:2015.12
A previously reported terephthalamide-based α-helixmimetic was modified by introducing a pyridine nitrogen and converting a tertiary amide to a secondary amide, which afforded a second intramolecular hydrogen bond to further influence the projection of the i, i + 3/4, and i + 7 side chains from the same face of the scaffold. The existence of two intramolecular hydrogen bonds was confirmed by 1H NMR
通过引入吡啶氮并将叔酰胺转化为仲酰胺对先前报道的基于对苯二甲酰胺的α-螺旋模拟物进行了修饰,后者提供了第二个分子内氢键以进一步影响i,i + 3/4和i + 7个来自支架同一面的侧链。1 H NMR滴定研究和分子动力学模拟证实了两个分子内氢键的存在。由于本文所述的短而有效的途径,对这种新的α-螺旋模拟物家族的访问是直接的。此外,手性中心的包含将允许研究立体化学对配体-受体结合的影响。
Gut-Restricted Selective Cyclooxygenase-2 (COX-2) Inhibitors for Chemoprevention of Colorectal Cancer
作者:Zhuming Zhang、Avijit Ghosh、Peter J. Connolly、Peter King、Thomas Wilde、Jianyao Wang、Yawei Dong、Xueliang Li、Daohong Liao、Hao Chen、Gaochao Tian、Javier Suarez、William G. Bonnette、Vineet Pande、Karen A. Diloreto、Yifan Shi、Shefali Patel、Beth Pietrak、Lawrence Szewczuk、Carlo Sensenhauser、Shannon Dallas、James P. Edwards、Kurtis E. Bachman、David C. Evans