Synthetic Studies toward Aryl-(4-aryl-4<i>H</i>-[1,2,4]triazole-3-yl)-amine from 1,3-Diarylthiourea as Urea Mimetics
作者:Amarnath Natarajan、Yuhong Guo、Haribabu Arthanari、Gerhard Wagner、Jose A. Halperin、Michael Chorev
DOI:10.1021/jo0508189
日期:2005.8.1
4]triazole-3-yl-amines as urea mimetics from the corresponding 1,3-disubstituted thioureas has been studied, and the scope and limitations of this reaction are presented. The reaction proceeds through the formation of a carbodiimide, followed by a sequential addition−dehydration with acyl hydrazides. 1,3-Branched dialkylthioureas result in the formation of the corresponding ureas. The electronic and steric
The invention provides compounds of formula (I):
wherein, A, C, D, X, and Y have any of the values defined in the specification, and salts thereof. The compounds are SIRT2 inhibitors and are useful for treating SIRT2 associated conditions.
这项发明提供了式(I)的化合物:
其中,A、C、D、X 和 Y 可以取规范中定义的任何值,以及它们的盐。这些化合物是SIRT2抑制剂,可用于治疗与SIRT2相关的疾病。
Sustainable Synthesis of Diverse Privileged Heterocycles by Palladium-Catalyzed Aerobic Oxidative Isocyanide Insertion
作者:Tjøstil Vlaar、Razvan C. Cioc、Pieter Mampuys、Bert U. W. Maes、Romano V. A. Orru、Eelco Ruijter
DOI:10.1002/anie.201207410
日期:2012.12.21
O2 in, H2O out: Various diamines and related bisnucleophiles readily undergo oxidativeisocyanideinsertion with Pd(OAc)2 (1 mol %) as the catalyst and O2 as the terminal oxidant to give a diverse array of medicinally relevant N heterocycles. The utility of this highly sustainable method is demonstrated by a formal synthesis of the antihistamines astemizole and norastemizole.
O 2 in,H 2 O out:各种二胺和相关的双亲核试剂易于经历氧化异氰化物的插入,其中Pd(OAc)2(1 mol%)作为催化剂,O 2作为末端氧化剂,可得到多种与医学相关的N杂环。抗组胺药阿司咪唑和去甲阿司咪唑的正式合成证明了这种高度可持续性方法的实用性。
Chemoselective isocyanide insertion into the N–H bond using iodine–DMSO: metal-free access to substituted ureas
作者:Porag Bora、Ghanashyam Bez
DOI:10.1039/c8cc05019h
日期:——
Insertion of isocyanides into the N–H bond gives access to many medicinally important and structurally diverse complex nitrogen-containing heterocycles. Although the transition metal catalyzed isocyanideinsertion into the N–H bond is very common, polymerization of isocyanides in the presence of a transition metal and their strong coordination with metals are the common drawbacks. On the other hand
Untersuchungen an 1,3-Thiazinen, 14. Mitt. Neue und bekannte Möglichkeiten zur Darstellung von N-monosubstituierten 3-Carbamoylmercaptopropionsäuren und deren Cyclisierung zu Tetrahydro-1,3-thiazin-2,4-dionen – ein Vergleich
作者:Wolfgang Hanefeld
DOI:10.1002/ardp.19813140407
日期:——
neuentwickelte Darstellungsmethoden für N‐monosubstituierte 3‐Carbamoylmercaptopropionsäuren 2 wurden mit bekannten Verfahren hinsichtlich Anwendungsbreite und Ausbeute verglichen und Methode C ‐ Addition von 3‐Mercaptopropionsäuremethylester an Isocyanate und folgende saure Verseifung zu 2 als überlegen erkannt. Mit Phosphorpentoxid/p‐Toluolsulfonsäure/Toluol ließen sich die Säuren 2 mit höheren Ausbeuten