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Structure Revision of Spiroleucettadine, a Sponge Alkaloid with a Bicyclic Co...
Our 2004 disclosure of the amino hemiketal-containing spiroleucettadine was met with keen interest by the natural products and synthetic communities. As repeated efforts to... -
Preparation, Structure, and Ethylene Polymerization Behavior of Bis(imino)pyr...
The synthesis, characterization, and ethylene polymerization behavior of a family of chromium(III) complexes of formula [2,6-bis(imino)pyridyl]CrCl3 is reported. The X-ray... -
Polymer-Supported Synthesis of Regioregular Head-to-Tail-Coupled Oligo(3-aryl...
The solid-phase synthesis of regioregular head-to-tail-coupled oligo(3-arylthiophene)s has been achieved in high yield and purity by using a traceless silyl ether linkage. In... -
Progress Toward the Total Synthesis of Bielschowskysin: A Stereoselective [2+...
The tetracyclic core of the diterpene bielschowskysin has been prepared as a single enantiomer via a stereoselective intramolecular [2 + 2] photocycloaddition of... -
Modified Guanidines as Potential Chiral Superbases. 3. Preparation of 1,4,6-T...
Simple preparation methods of modified guanidines have been explored as potential chiral superbases. Thus, 3,7,8-trisubstituted and 3,6,7,8-tetrasubstituted... -
Mechanistic Investigation of Substrate Oxidation by Ce(IV) Reagents in Aceton...
Rates and activation parameters for the Ce4+-mediated oxidation of a β-keto ester, a β-diketone, and a β-keto silyl enol ether were determined in acetonitrile. In the case of... -
The Nematic Lateral Phase: A Novel Phase in Discotic Supramolecular Assemblies
The Nematic Lateral Phase: A Novel Phase in Discotic Supramolecular Assemblies -
A comprehensive understanding of lowly-hydrolyzed polyvinyl alcohol-based ter...
We recently reported lowly hydrolyzed polyvinyl alcohol (L-PVA, 70–74% hydrolyzed, about 580 polymerized, JR-05) as a promising matrix for hot-melt extrusion (HME) due to its... -
Revised Constitution of Sclerophytins A and B
Spectroscopic reevaluation of sclerophytin B, the acetate of sclerophytin A, has demonstrated unequivocally that these coral metabolites are not composed of two ether bridges. -
Enantioselective total synthesis of -zearalenol from ( <i>s</i> )-propylene o...
The total synthesis of 14-membered resorcylic acid macrolide, β-zearalenol, was accomplished starting from commercially available enantiomerically pure propylene oxide and... -
Reaction Discovery Employing Macrocycles: Transannular Cyclizations of Macroc...
Macrocyclic bis-lactams have been synthesized by cyclodimerization of homoallylic amino esters employing a Zr(IV)-catalyzed ester-amide exchange protocol. Base-mediated... -
Alternating Copolymerization of Bicyclic Bis(γ-butyrolactone) and Epoxide thr...
Alternating Copolymerization of Bicyclic Bis(γ-butyrolactone) and Epoxide through Zwitterion Process by Phosphines -
Alternating Thick and Thin Layers Observed in the Smectic Phase of Binary Mix...
Alternating Thick and Thin Layers Observed in the Smectic Phase of Binary Mixtures of Rigid-Rod Helical Polysilanes with Different Molecular Lengths -
Total Syntheses of the Marine Pyrrole Alkaloids Polycitone A and B
Polycitone B (2) was obtained in four steps from pyrrole dicarboxylic acid 3, including Friedel−Crafts reaction of the corresponding acid chloride with anisole. The conversion... -
Preparation of 4-Oxo-l-norvaline via Diazomethane Homologation of β-Aspartyl ...
Preparation of 4-Oxo-l-norvaline via Diazomethane Homologation of β-Aspartyl Semialdehyde -
Disilyl Complexes of Zirconium, Hafnium, and Tantalum. Their Synthesis, Chara...
Cyclopentadienyl-free disilyl amide complexes [(Me2N)3M(SiButPh2)2]- (M = Zr, 1; Hf, 2 as [Li(THF)4]+ salts), K(18-crown-6)3/2{(Me2N)3M[(Me3Si)2Si-(CH2)2-Si(SiMe3)2]} (M = Zr,... -
Total Synthesis of the Epoxy Isoprostane Phospholipids PEIPC and PECPC
A total synthesis of the naturally occurring hydroxy ketone PEIPC 1, a compound that plays a role in endothelial activation in atherosclerosis, has been completed via a triply... -
The First Direct Oxidative Conversion of a Selenol to a Stable Selenenic Acid...
: [structure: see text]. A stable selenenic acid was synthesized by direct oxidation of a selenol bearing a novel bowl-type substituent with H2O2, and its structure was... -
Reactivity of Nitrovinylquinones with Cyclic and Acyclic Enol Ethers
The nitrovinyl-substituted quinones 2-(2-nitrovinyl)-1,4-benzoquinone and 2-(2-nitrovinyl)-1,4-naphthoquinone react with a variety of cyclic and acyclic enol ethers via two... -
N-Heterocyclic Carbenes: Versatile Reagents for Postpolymerization Modification
N-Heterocyclic Carbenes: Versatile Reagents for Postpolymerization Modification
