Benign synthesis of fused-thiazoles with enone-based natural products and drugs for lead discovery
作者:Rawan Alnufaie、Mohamad Akbar Ali、Ibrahim S. Alkhaibari、Subrata Roy、Victor W. Day、Mohammad A. Alam
DOI:10.1039/d1nj00380a
日期:——
In an effort to synthesize a library of bioactive molecules, we present an efficient synthesis of fused-thiazole derivatives of natural products and approved drugs by using an environmentally usable solvent, acetic acid, and without any external reagent. Cholestenone, ethisterone, progesterone, and nootkatone-derived epoxyketones have been utilized to synthesize 50 novel compounds. The plausible mechanism
Synthesis and characterization of dimeric steroids based on 5-oxo-4,5-seco-yne units linked by a diyne spacer
作者:Ricardo M. Valdez-GarcÃa、Carlos Alarcón-Manjarrez、Rafael Arcos-Ramos、Marcos Flores-Ãlamo、Martin A. Iglesias-Arteaga
DOI:10.24820/ark.5550190.p010.459
日期:——
New dimericsteroids in which two 5-oxo-4,5-seco-3-yne steroids units are linked by a flexible diyne spacer, were prepared by both Eglinton and Pd-catalyzed coupling of the corresponding monomers. X-Ray crystallography shows that one of the obtained dimers displays a novel supramolecular network in which the facial hydrophobicity of the steroidal skeleton plays an important role. The crystal packing
Synthesis, NMR and crystal characterization of dimeric terephthalates derived from epimeric 4,5-seco-cholest-3-yn-5-ols
作者:Carlos Alarcón-Manjarrez、Rafael Arcos-Ramos、Marcos Flores Álamo、Martín A. Iglesias-Arteaga
DOI:10.1016/j.steroids.2016.03.001
日期:2016.5
Two dimeric steroidal terephthalates derivedfrom epimeric 4,5-seco-cholest-3-yn-5-ols were prepared starting from cholesterol in a five-step synthetic sequence. X-ray crystallography shows that the obtained compounds display novel supramolecular networks in the solid state in which the facial hydrophobicity of the steroidal skeletons plays an important role. Unambiguous NMR characterization of the
2,4-Dinitrobenzenesulfonylhydrazine, a useful reagent for the Eschenmoser .alpha.,.beta. cleavage of .alpha.,.beta.-epoxy ketones. Conformational control of halolactonization