[EN] HYDRAZINO 1H-IMIDAZOQUINOLIN-4-AMINES AND CONJUGATES MADE THEREFROM [FR] HYDRAZINO 1H-IMIDAZOQUINOLÉINE-4-AMINES ET CONJUGUÉS OBTENUS À PARTIR DE CELLES-CI
微波辅助合成2-芳基-2-恶唑啉,5,6-二氢-4 H -1,3-恶嗪和4,5,6,7-四氢-1,3-恶氮杂s
摘要:
提出了通过微波辅助多磷酸(PPA)酯促进的ω-氨基醇的环化反应合成5至7元环亚氨基醚的第一个通用程序。使用聚磷酸乙酯/ CHCl 3有效地制备了2-芳基-2-恶唑啉和5,6-二氢-4 H -1,3-恶嗪。在无溶剂条件下,多磷酸三甲基甲硅烷基酯可合成迄今未报道的4,5,6,7-四氢-1,3-氧杂氮杂pine。该方法具有良好的收率和优异的收率,并且反应时间短。在手性底物中研究了PPA酯的反应机理和作用。
Umpolung reactivity in amide and peptide synthesis
作者:Bo Shen、Dawn M. Makley、Jeffrey N. Johnston
DOI:10.1038/nature09125
日期:2010.6
which the polarities of the two reactants are reversed (German, umpolung) during carbon–nitrogen bond formation relative to traditional approaches. The use of nitroalkanes as acyl anion equivalents provides a conceptually innovative approach to amide and peptide synthesis, and one that might ultimately provide for efficient peptide synthesis that is fully reliant on enantioselective methods.
Cyclic hydroxylamines form esters instead of the expected amides as major product upon reaction with α-ketoacids. In this report, we document a systematic investigation into the effect of the hydroxylamine structure and the solvent mixture on the product ratio of amides vs. ester in the KAHA ligation. We show that the ratio is almost exclusively determined by the structure of the hydroxylamine, with
Amidation of Esters with Amino Alcohols Using Organobase Catalysis
作者:Nicola Caldwell、Peter S. Campbell、Craig Jamieson、Frances Potjewyd、Iain Simpson、Allan J. B. Watson
DOI:10.1021/jo501929c
日期:2014.10.3
the base-mediated amidation of unactivated esters with amino alcohol derivatives is reported. Investigations into mechanistic aspects of the process indicate that the reaction involves an initial transesterification, followed by an intramolecular rearrangement. The reaction is highly general in nature and can be extended to include the synthesis of oxazolidinone systems through use of dimethyl carbonate
Microwave-Assisted Synthesis of 2-Aryl-2-oxazolines, 5,6-Dihydro-4<i>H</i>-1,3-oxazines, and 4,5,6,7-Tetrahydro-1,3-oxazepines
作者:María C. Mollo、Liliana R. Orelli
DOI:10.1021/acs.orglett.6b03122
日期:2016.12.2
general procedure for the synthesis of 5- to 7-membered cyclic iminoethers by microwave-assisted cyclization of ω-amido alcohols promoted by polyphosphoric acid (PPA) esters is presented. 2-Aryl-2-oxazolines and 5,6-dihydro-4H-1,3-oxazines were efficiently prepared using ethyl polyphosphate/CHCl3. Trimethylsilyl polyphosphate in solvent-free conditions allowed for the synthesis of hitherto-unreported
提出了通过微波辅助多磷酸(PPA)酯促进的ω-氨基醇的环化反应合成5至7元环亚氨基醚的第一个通用程序。使用聚磷酸乙酯/ CHCl 3有效地制备了2-芳基-2-恶唑啉和5,6-二氢-4 H -1,3-恶嗪。在无溶剂条件下,多磷酸三甲基甲硅烷基酯可合成迄今未报道的4,5,6,7-四氢-1,3-氧杂氮杂pine。该方法具有良好的收率和优异的收率,并且反应时间短。在手性底物中研究了PPA酯的反应机理和作用。
[EN] HYDRAZINO 1H-IMIDAZOQUINOLIN-4-AMINES AND CONJUGATES MADE THEREFROM<br/>[FR] HYDRAZINO 1H-IMIDAZOQUINOLÉINE-4-AMINES ET CONJUGUÉS OBTENUS À PARTIR DE CELLES-CI
申请人:3M INNOVATIVE PROPERTIES CO
公开号:WO2012167081A1
公开(公告)日:2012-12-06
1H-Imidazo[4,5-c]quinolin-4-amines substituted at the 1-position with a substituent bearing a hydrazinobenzamide or hydrazinonicotinamide, a salt thereof, or a protected hydrazinobenzamide or hydrazinonicotinamide and conjugates made from such compounds are disclosed. Pharmaceutical compositions containing the compound or the conjugate, methods of making a conjugate, and methods of use of the compounds or conjugates as immunomodulators for inducing cytokine biosynthesis in an animal and for vaccinating an animal are also disclosed.