构象受限的环状γ-氨基酸的高度立体选择性合成已被设计。关键步骤涉及在双功能硫脲催化剂的促进下,硝基酸酯在共轭酯上的分子内环化。该方法已成功应用于生成多种 γ-氨基酸,包括一些含有三个连续立体中心的氨基酸,具有非常高的非对映选择性和出色的对映选择性。据推测,该过程成功的关键是硫脲官能团与共轭酯和硝基酯的同时配位。最后,这些化合物的合成效用在源自 C 和 N 末端的两种二肽的合成中得到证明。
Design and synthesis of a selective EP4-Receptor agonist. Part 1: discovery of 3,7-DithiaPGE1 derivatives and identification of Their ω chains
摘要:
Improvement of EP4-receptor selectivity and the agonist activity by introduction of heteroatoms into the a chain of PGE(1) was investigated. Among the compounds tested, 3,7-dithiaPGE(1) 4a exhibited good EP4-receptor selectivity and agonist activity. Further modification of the omega chain of 3,7-dithiaPGE(1) was performed to improve EP4-receptor selectivity and agonist activity. Of the compounds produced, 16-phenyl-omega-tetranor-3.7-dithiaPGE(1) 4p possessing moderate EP4-receptor selectivity and agonist activity. was identified as a new chemical lead for further optimization by modification of the aromatic moiety. (C) 2002 Elsevier Science Ltd. All rights reserved.
Enantioselective Intramolecular Michael Addition of Nitronates onto Conjugated Esters: Access to Cyclic γ-Amino Acids with up to Three Stereocenters
作者:William J. Nodes、David R. Nutt、Ann M. Chippindale、Alexander J. A. Cobb
DOI:10.1021/ja9092083
日期:2010.1.13
PROTEOLYSIS-TARGETING CHIMERA (PROTAC) COMPOUNDS AND USES THEREOF FIELD
申请人:[en]AUBRAK THERAPEUTICS
公开号:WO2024165050A1
公开(公告)日:2024-08-15
The present disclosure relates generally to PROTAC (proteolysis-targeting chimera) compounds, pharmaceutical compositions comprising such compounds, and methods of treating various diseases and conditions with such compounds.