Synthesis and Affinity Evaluation for AT1 Receptor of Phenylsalicylaldoxime-Derivatives Structurally Related to Sartans
摘要:
In this work we reported the synthesis of new potential AT1 antagonists through the replacement of the biphenyltetrazole portion of the losartan with biphenylaldoximic (2) and phenylsalicylaldoximic (3a) moieties. Moreover, also the trifluoromethylpyrazole analogue of 3a (3b) was prepared. The new compounds synthesized were evaluated for their AT1 affinity through binding assay carried out on rat liver membranes using [(125)I]Sar1,Ile8-angiotensina II as radioligand.
Direct Excitation of Aldehyde to Activate the C(
<i>sp</i>
<sup>
<i>2</i>
</sup>
)−H Bond by Cobaloxime Catalysis toward Fluorenones Synthesis with Hydrogen Evolution
highly reactive photoexcited triplet state of aromatic aldehyde intermediates is intercepted by the catalyst in the ground state, thus leading to the synthesis of a series of fluorenones, xanthones and thioxanthones in good to excellent yields without any external oxidants and with hydrogen as the byproduct.
已经成功开发了通过钴肟催化直接激发醛以激活其 C ( sp 2 )-H 键。在照射下,芳香醛中间体的高反应性光激发三重态被基态催化剂拦截,从而导致在没有任何外部氧化剂和氢作为副产品。
N-Tosylhydrazine-mediated deoxygenative hydrogenation of aldehydes and ketones catalyzed by Pd/C
作者:Lei Zhou、Zhenxing Liu、Yizhou Liu、Yan Zhang、Jianbo Wang
DOI:10.1016/j.tet.2013.05.070
日期:2013.7
A mild and efficient method for the deoxygenative hydrogenation of aldehydes and ketones has been developed. The reaction is mediated by N-tosylhydrazine with H-2 (1 atm) as the reductant and 10% Pd/C as the catalyst. (C) 2013 Elsevier Ltd. All rights reserved.
Expeditious Synthesis of Phenanthrenes via CuBr<sub>2</sub>-Catalyzed Coupling of Terminal Alkynes and <i>N-</i>Tosylhydrazones Derived from <i>O</i>-Formyl Biphenyls
作者:Fei Ye、Yi Shi、Lei Zhou、Qing Xiao、Yan Zhang、Jianbo Wang
DOI:10.1021/ol201788v
日期:2011.10.7
A new method for the synthesis of phenanthrenes via ligand-free CuBr2-catalyzed coupling/cyclization of terminal alkynes with N-tosylhydrazones derived from o-formyl biphenyls has been developed. This new synthesis has wide range of functional group compatibility.
Synthesis and Affinity Evaluation for AT1 Receptor of Phenylsalicylaldoxime-Derivatives Structurally Related to Sartans
In this work we reported the synthesis of new potential AT1 antagonists through the replacement of the biphenyltetrazole portion of the losartan with biphenylaldoximic (2) and phenylsalicylaldoximic (3a) moieties. Moreover, also the trifluoromethylpyrazole analogue of 3a (3b) was prepared. The new compounds synthesized were evaluated for their AT1 affinity through binding assay carried out on rat liver membranes using [(125)I]Sar1,Ile8-angiotensina II as radioligand.
Synthesis of Phenanthrenes through Copper-Catalyzed Cross-Coupling of <i>N</i>-Tosylhydrazones with Terminal Alkynes
作者:Mohammad Lokman Hossain、Fei Ye、Zhenxing Liu、Ying Xia、Yi Shi、Lei Zhou、Yan Zhang、Jianbo Wang
DOI:10.1021/jo501489c
日期:2014.9.19
for the synthesis of phenanthrenes through the copper-catalyzed reaction of aromatic tosylhydrazones with terminalalkynes is explored. The reaction proceeds via the formation of an allene intermediate and subsequent six-π-electron cyclization–isomerization, affording phenanthrene derivatives in good yields. The transformation can be performed in two ways: (1) with N-tosylhydrazones derived from [1,1