Systematic Investigation of Halogen Bonding in Protein–Ligand Interactions
作者:Leo A. Hardegger、Bernd Kuhn、Beat Spinnler、Lilli Anselm、Robert Ecabert、Martine Stihle、Bernard Gsell、Ralf Thoma、Joachim Diez、Jörg Benz、Jean‐Marc Plancher、Guido Hartmann、David W. Banner、Wolfgang Haap、François Diederich
DOI:10.1002/anie.201006781
日期:2011.1.3
Halogenbonding triggers activity: Increasing binding affinity was observed for a series of covalent human Cathepsin L inhibitors by exchanging an aryl ring H atom with Cl, Br, and I, which undergo halogenbonding with the CO group of Gly61 in the S3 pocket of the enzyme. Fluorine, in contrast, strongly avoids halogenbonding (see scheme). The strong distance and angle dependence of halogen bonding
We herein report an Ir-catalyzed enantioselective C(sp3)-H borylation of cyclopropanecarboxamides using a chiral bidentate boryl ligand for the first time. A variety of substrates with α-quaternary carbon centers could be compatible in this reaction to provide β-borylated products with good to excellent enantioselectivities. We have also demonstrated that the borylated products can be used as versatile
我们在此报告了首次使用手性双齿硼酸配体对环丙烷甲酰胺进行 Ir 催化的对映选择性 C(sp3)-H 硼酸化。具有 α-季碳中心的多种底物可以在该反应中相容,以提供具有良好至优异对映选择性的 β-硼酸化产物。我们还证明,硼酸化产物可用作多功能前体,参与 CB 键的立体有择转化,包括合成生物活性化合物 Levomilnacipran。