Download PDF by Robert M. Williams: 19th International Congress on Heterocyclic Chemistry. Book

By Robert M. Williams

ISBN-10: 0080443044

ISBN-13: 9780080443041

This e-book offers the abstracts of the 19th foreign Congress of Heterocyclic Chemistry (19th ICHC) held in fortress Collins, Colorado, 10-15th August 2003 and gives the reader with a topical entire reference resource masking the most recent advancements within the heterocycles region. each one lecture from the nineteenth ICHC is gifted as a one web page summary containing a textual precis of the lecture, together with references, figures and make contact with info of the author(s).

Papers are divided into the next sections: heterocyclic usual items, heterocycles in natural synthesis, bioactive heterocycles, heterocyclic fabrics &related themes, heterocyclic prescribed drugs.

The publication of abstracts offers a topical reference resource protecting the most recent advancements within the heterocyles region

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Extra info for 19th International Congress on Heterocyclic Chemistry. Book of Abstracts

Example text

Since, in addition, the secondary amino group can also participate in the reaction, heterocyclic ketene aminals may serve as bis-nucleophilic reagents. Hence the annulation of heterocyclic ketene aminals with bis-electrophilic reagents gives rise to a wide variety of fused heterocyclic compounds which are hardly accessible to other synthetic methods. It is worth noting that some heterocycl ic ketene aminals and their derivatives have been shown to possess certain biological activities, which has drawn the attention of medicinal chemists and agrochemists.

Sultoximine, reflux, 44 h (R) 91% 2 eq. ; Schlemper, E. O. Tetrahedron Lett . 1987,28, 5997-6000. ; Pavri, N. Angew. , Int. Ed. 1999,38,2419-2422. 49 l1-IL-l1 Asymmetric Cyclopropanation of Furans as Key Step for the Synthesis of Natural Products and Natural Product Analogs Oliver Reiser lnstitut fur Organische Chemie, Universitdt Regensburg, Universitiitsstr. 31,93053 Regensburg, Germany. de Asymmetric catalyses belong to the most attractive transformations in stereoselective synthesis. A vast number of catalysts for organic reactions are known today.

Likely they decompose before reaching the target. We therefore thought to tum to polymeric micelles, physically incorporating the drug, that have recently emerged as a novel promising colloidal carrier for the modified drug release. They are formed from copolymers including both hydrophilic and hydrophobic monomer units which in aqueous medium present an inner core of hydrophobic blocks stabilized by a crown of hydrophilic chains. The peculiar structure of these particulate systems allows to increase water solubility of poorly water soluble drugs, to prevent chemical degradation of labile drugs and to increase drug half-life.

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19th International Congress on Heterocyclic Chemistry. Book of Abstracts by Robert M. Williams


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