15 research outputs found
Synthesis of, and Structural Assignments to the Stereoisomers of Bis (2,2′)- and Tris (2,2′,2″)-Tetrahydrofurans: Conformational Features and Ionic Binding Capacities of These Gateway Polycyclic Networks
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Information technology implementations in libraries and information centres in Malaysia: Impact and pitfalls
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5,7,8,10,15,17,18,20-Octaphenyl-21,23-dithiaporphyrin: synthesis, structure and spectroelectrochemistry
No full textDiastereocontrolled Construction of Pactamycin’s Complex Ureido Triol Functional Array
No full text[Image: see text] An advanced intermediate in a projected synthesis of pactamycin has been prepared. Early installation of the C1-dimethylurea functionality allows for its participation in a diastereoselective, chelation-controlled addition of organometal nucleophiles to the C5 prochiral ketone. Four of the molecule’s six stereocenters are set with a ketone functional handle provided for subsequent manipulation
Asymmetric Construction of Three Contiguous Stereogenic Centers by Conjugate Addition−Alkylation of Lithium Ester Enolate
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Water Soluble, Core-Modified Porphyrins. 3. Synthesis, Photophysical Properties, and in Vitro Studies of Photosensitization, Uptake, and Localization with Carboxylic Acid-Substituted Derivatives
No full textSynthesis, Spectroscopy, and Reactivity of Meso-Unsubstituted Azuliporphyrins and Their Heteroanalogues. Oxidative Ring Contractions to Carba-, Oxacarba-, Thiacarba-, and Selenacarbaporphyrins
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