Synthesis of a Stereochemically Diverse Library of Medium-Sized Lactams and Sultams via S<sub>N</sub>Ar Cycloetherification
作者:Baudouin Gerard、Jeremy R. Duvall、Jason T. Lowe、Tiffanie Murillo、Jingqiang Wei、Lakshmi B. Akella、Lisa A. Marcaurelle
DOI:10.1021/co2000218
日期:2011.7.11
We have implemented an aldol-based “build/couple/pair” (B/C/P) strategy for the synthesis of stereochemically diverse 8-membered lactam and sultam scaffolds via SNAr cycloetherification. Each scaffold contains two handles, an amine and aryl bromide, for solid-phase diversification via N-capping and Pd-mediated cross coupling. A sparse matrix design strategy that achieves the dual objective of controlling
我们已经实施了基于醇醛的“构建/偶联/对”(B / C / P)策略,用于通过S N Ar环醚化合成立体化学多样的8元内酰胺和sultam支架。每个支架包含两个手柄,一个胺和一个溴化芳基,用于通过N封端和Pd介导的交叉偶联进行固相分散。实现了一种稀疏矩阵设计策略,该策略实现了控制物理化学性质和选择各种库成员的双重目标。讨论了两个具有8000个成员的文库的生产,包括对文库纯度和性质分布的全面分析。通过使用多重融合相似性(MFS)图和主成分分析(PCA),与分子图书馆小分子知识库(MLSMR)相比,对图书馆的多样性进行了评估。
Build/Couple/Pair Strategy for the Synthesis of Stereochemically Diverse Macrolactams via Head-to-Tail Cyclization
作者:Mark E. Fitzgerald、Carol A. Mulrooney、Jeremy R. Duvall、Jingqiang Wei、Byung-Chul Suh、Lakshmi B. Akella、Anita Vrcic、Lisa A. Marcaurelle
DOI:10.1021/co200161z
日期:2012.2.13
A build/couple/pair (B/C/P) strategy was employed to generate a library of 7936 stereochernically diverse 12-membered macrolactams. All 8 stereoisomers of a common linear amine precursor were elaborated to form the corresponding 8 stereoisomers of two regioisomeric macrocyclic scaffolds via head-to-tail cyclization. Subsequently,these 16 scaffolds were further diversified via capping of two amine functionalities on SynPhase Lanterns. Reagents used for solid-phase diversification were selected using a sparse matrix design strategy with the aim of maximizing coverage of chemical space while adhering to a preset range of physicochemical properties.
Synthesis of a Novel Suppressor of β-Cell Apoptosis via Diversity-Oriented Synthesis
作者:Danny Hung-Chieh Chou、Jeremy R. Duvall、Baudouin Gerard、Haibo Liu、Bhaumik A. Pandya、Byung-Chul Suh、Erin M. Forbeck、Patrick Faloon、Bridget K. Wagner、Lisa A. Marcaurelle
DOI:10.1021/ml200120m
日期:2011.9.8
The synthesis of a stereochemically diverse library of medium-sized rings accessible via a "build/couple/pair" strategy is described. Key aspects of the synthesis include SNAr cycloetherification of a linear amine template to afford eight stereoisomeric eight-membered lactams and subsequent solid-phase diversification of these scaffolds to yield a 6488-membered library. Screening of this compound collection in a cell-based assay for the suppression of cytokine-induced beta-cell apoptosis resulted in the identification of a small-molecule suppressor capable of restoring glucose-stimulated insulin secretion in a rat beta-cell line. The presence of all stereoisomers in the screening collection enabled preliminary determination of the structural and stereochemical requirements for cellular activity, while efficient follow-up chemistry afforded BRD0476 (probe ML187), which had an approximately 3-fold increase in activity. These results demonstrate the utility of diversity-oriented synthesis to probe discovery using cell-based screening and the importance of including stereochemical diversity in screening collections for the development of stereo/structure-activity relationships.