Cationic Ir/Me-BIPAM-Catalyzed Asymmetric Intramolecular Direct Hydroarylation of α-Ketoamides
作者:Tomohiko Shirai、Hajime Ito、Yasunori Yamamoto
DOI:10.1002/anie.201400147
日期:2014.3.3
Asymmetricintramoleculardirecthydroarylation of α‐ketoamides gives various types of optically active 3‐substituted 3‐hydroxy‐2‐oxindoles in high yields with complete regioselectivity and high enantioselectivities (84–98 % ee). This is realized by the use of the cationic iridium complex [Ir(cod)2](BArF4) and the chiral O‐linked bidentate phosphoramidite (R,R)‐Me‐BIPAM.
α-酮酰胺的不对称分子内直接氢芳基化反应可高产率获得各种类型的旋光3-取代3-羟基2-羟吲哚,具有完全的区域选择性和高对映选择性(84–98%ee)。这是通过使用阳离子铱络合物[Ir(cod)2 ](BAr F 4)和手性O联双齿亚磷酰胺(R,R)-Me-BIPAM来实现的。
Synthesis of Thelepamide via Catalyst-Controlled 1,4-Addition of Cysteine Derivatives and Structure Revision of Thelepamide
作者:Tobias Seitz、Ramón E. Millán、Dieter Lentz、Carlos Jiménez、Jaime Rodríguez、Mathias Christmann
DOI:10.1021/acs.orglett.7b03706
日期:2018.2.2
The first enantioselectivetotalsynthesis and structural reassignment of (−)-thelepamide, a cytotoxic tetraketide–amino acid from the marine worm Thelepus crispus, is reported. A convergent approach provides access to all thelepamide diastereomers in six steps from four simple building blocks. Key features of the synthesis include the application of Melchiorre’s organocatalytic thia-Michael reaction
Design, synthesis and SAR study of bridged tricyclic pyrimidinone carboxamides as HIV-1 integrase inhibitors
作者:Manoj Patel、B. Narasimhulu Naidu、Ira Dicker、Helen Higley、Zeyu Lin、Brian Terry、Tricia Protack、Mark Krystal、Susan Jenkins、Dawn Parker、Chiradeep Panja、Richard Rampulla、Arvind Mathur、Nicholas A. Meanwell、Michael A. Walker
DOI:10.1016/j.bmc.2020.115541
日期:2020.7
The design, synthesis and structure-activity relationships associated with a series of bridged tricyclic pyrimidinone carboxamides as potent inhibitors of HIV-1 integrase strand transfer are described. Structural modifications to these molecules were made in order to examine the effect on potency towards wild-type and clinically-relevant resistant viruses. The [3.2.2]-bridged tricyclic system was identified
Development of benzo[1,4]oxazines as biofilm inhibitors and dispersal agents against Vibrio cholerae
作者:Christopher J. A. Warner、Andrew T. Cheng、Fitnat H. Yildiz、Roger G. Linington
DOI:10.1039/c4cc07003h
日期:——
Synthesis of a library of natural product-inspired biofilm inhibitors has revealed a compound with selective and potent anti-biofilm activity against V. cholerae.
A Facile Pathway to Enantiomerically Enriched 3-Hydroxy-2-Oxindoles: Asymmetric Intramolecular Arylation of α-Keto Amides Catalyzed by a Palladium-DifluorPhos Complex
作者:Liang Yin、Motomu Kanai、Masakatsu Shibasaki
DOI:10.1002/anie.201102158
日期:2011.8.8
Less metal wastes: The first catalytic, enantioselective intramolecular aryl‐transfer reaction of aryl triflates to ketones has been developed (see scheme; R1=R2=aromatic and aliphatic). This method features overall practicality, including substrate stability and accessibility (protecting‐group free) plus no need for the use of stoichiometric amounts of metals.
减少金属废料:已开发出芳基三氟甲磺酸酯向酮的第一个催化,对映选择性分子内芳基转移反应(参见方案; R 1 = R 2 =芳族和脂族)。该方法具有整体实用性,包括基材稳定性和可及性(无保护基团),而且无需使用化学计量的金属。