A series of 32 derivatives and isosteres of the mTORinhibitor 2 were synthesized and compared for their cytotoxicity in radioresistant SQ20B cancer cell line. Several of these compounds, in particular 30b, were significantly more cytotoxic than 2. Importantly, 30b was shown to block both mTORC1 and Akt signaling, suggesting insensitivity to the resistance associated to Akt overactivation observed
Trifluoroacetic Acid: An Efficient Catalyst for Paal-Knorr Pyrrole Synthesis and Its Deprotection
作者:K. Narayanaswamy Venugopala、Renuka T. Prasanna、Bharti Odhav
DOI:10.14233/ajchem.2013.15185
日期:——
In the present work, we demonstrated a simple and an efficient method for the condensation of substituted aryl/heteroaryl amines with acetonylacetone in the presence of trifluoro acetic acid to afford the corresponding 2,5-dimethyl-1-substitued pyrroles using Paal-Knorr synthesis in excellent yields. Trifluoroacetic acid was used under reflux condition for the deprotection of 2,5-dimethyl-1-substitued pyrroles to their corresponding substituted aryl/heteroaryl amines in moderate yields. 2,5-Dimethyl-1-substitued pyrrole were characterized by NMR and LC-MS. The yield of the compounds was found to be excellent.
Assembly of Substituted 1<i>H</i>-Benzimidazoles and 1,3-Dihydrobenzimidazol-2-ones via CuI/<scp>l</scp>-Proline Catalyzed Coupling of Aqueous Ammonia with 2-Iodoacetanilides and 2-Iodophenylcarbamates
作者:Xiaoqiong Diao、Yuji Wang、Yongwen Jiang、Dawei Ma
DOI:10.1021/jo9017183
日期:2009.10.16
CuI/l-proline catalyzed coupling of aqueous ammonia with 2-iodoacetanilides and 2-iodophenylcarbamates affords the arylamination products at roomtemperature, which undergo in situ additive cyclization under acidic conditions or heating to give substituted 1H-benzimidazoles and 1,3-dihydrobenzimidazol-2-ones, respectively. A wide range of functional groups including ketone, nitro, iodo, bromo, and
CuI / l-脯氨酸催化氨水与2-碘乙酰苯胺和2-碘苯基氨基甲酸酯的偶联在室温下提供芳基胺化产物,将其在酸性条件下进行原位加成环化或加热以生成取代的1 H-苯并咪唑和1,3-二氢苯并咪唑-2-酮。在这些反应条件下,可以耐受包括酮,硝基,碘,溴和酯在内的各种官能团,从而为这些杂环提供了极大的多样性。
Ismail'skii; Simonow, Zhurnal Obshchei Khimii, 1940, vol. 10, p. 1580,1582
作者:Ismail'skii、Simonow
DOI:——
日期:——
Synthesis of Structurally Diverse Benzotriazoles via Rapid Diazotization and Intramolecular Cyclization of 1,2‐Aryldiamines
作者:Réka J. Faggyas、Nikki L. Sloan、Ned Buijs、Andrew Sutherland
DOI:10.1002/ejoc.201900463
日期:2019.9
mild conditions, using a polymer‐supported nitrite reagent and p‐tosic acid. The functional group tolerance of this approach was further demonstrated with effective activation and cyclization of N‐alkyl, ‐aryl, and ‐acyl ortho‐aminoanilines leading to the synthesis of N1‐substituted benzotriazoles. The synthetic utility of this one‐pot heterocyclization process was exemplified with the preparation of a