Synthesis of 1-aryl-tetralins and 4-aryl-benzopyrans by sulfoxide-mediated benzylic carbocation cyclizations
摘要:
An alkylation/cyclization sequence, with both steps mediated by the ortho-N-methylformamido-phenylsulfinyl function, provided two new C-C bonds and an efficient entry to 1-aryl-tetralins and 4-aryl-benzopyrans. Scope and limits of the process have been studied in detail. (c) 2005 Elsevier Ltdv. All rights reserved.
Design, synthesis, and biological testing of thiosalicylamides as a novel class of calcium channel blockers
作者:Ahmed S. Mehanna、Jin Yung Kim
DOI:10.1016/j.bmc.2005.04.012
日期:2005.7
investigate the importance of the heterocyclic ring system in the structure of the cardiovascular drug diltiazem for its calcium channel blocking activity. The manuscript describes the design, synthesis, and biological testing of a total of 10 S-(p-methoxybenzyl), N-substituted thiosalicylamides as a series of non-cyclic compounds derived from diltiazem's structure. The newcompounds maintained all diltiazem
The invention involves the identification of a family of compounds which block calcium channels. The compounds can be formulated in pharmaceutical carriers and administered to subjects. The compounds are useful for treating disorders associated with calcium channel activity, such as, cardiovascular diseases, for example hypertension, congestive heart failure, arrhythmia and angina.
An Efficient Synthesis of a Highly Functionalized Dihydrobenzothiophene Derivative: A Ring-Contracted Analogue of the Anti-inflammatory Drug Propoxicam
作者:J. Carlos Menéndez、Giammarco Tenti、José Clerigué、M. Teresa Ramos
DOI:10.1055/a-1873-4473
日期:2022.9
A five-step route to a ring-contracted analogue of the oxicam derivative propoxicam from thiosalicylic acid, sarcosine and N,N-dimethyl-1,3-propanediamine is described. The route has as key steps the base-promoted cross-Claisen coupling of protected sarcosine and thiosalicylic acid derivatives, the installation of a β-ketoamide moiety and a final Hg(II)-induced cyclization that creates the C–S bond
Photoisomerization in an analogous set of ruthenium sulfoxide complexes
作者:Brianne L. Porter、Beth Anne McClure、Eric R. Abrams、James T. Engle、Christopher J. Ziegler、Jeffrey J. Rack
DOI:10.1016/j.jphotochem.2010.11.002
日期:2011.1
Complexes of the type [Ru(bpy)(2)(OSOBnR)](PF6) where bpy is 2,2'-bipyridine and OSOBnR is a 4-substituted benzylsulfinylbenzoate with R = NO2, F, Cl, H, CH3, CF3 and OCH3, have been prepared and investigated by H-1 NMR spectroscopy, cyclic voltammetry and UV-vis spectroscopy. Despite the distance of the R group from ruthenium, the Ru3+/2+ reduction potential and charge transfer absorption maximum vary predictably with the electron withdrawing nature of the group. (C) 2010 Elsevier B.V. All rights reserved.