Other

Synsorb Biotech, Inc.

Glycomed, Inc.

Chembiomed, Ltd.

Sunsorb Biotech, Inc.

Ole Hindsgaul

David C Schriemer

David R Bundle

Om P Srivastava

James Pierce

Minghui Du

Geeta Srivastava

Ulf J Nilsson

Narasinga Rao

Kevin R Holme

Morten P Meldal

Roman Szweda

Avraham Liav

H Rizk Hanna

Klaus Bock

Gerd Hummel

Frank W Barresi

Disclosed are apparatus for screening compound libraries using frontal chromatography in combination with mass spectrometry to identify and rank those members of the library that bind to a target receptor. The apparatus of this invention also permit a compound library to be rapidly screened to determine if any member of the library has an affinity for the target receptor as measured by a pre-selected indicator compound.

Apparatus for screening compound libraries

Disclosed are methods for screening compound libraries using frontal chromatography in combination with mass spectrometry to identify and rank those members of the library that bind to a target receptor. Methods are also disclosed which permit a compound library to be rapidly screened to determine if any member of the library has an affinity for the target receptor as measured by a pre-selected indicator compound.

Methods for screening compound libraries

Disclosed are methods for screening compound libraries using frontal chromatography in combination with mass spectrometry to identify and rank those members of the library that bind to a target receptor. Methods are also disclosed which permit a compound library to be rapidly screened to determine if any members of the library have a higher affinity for the target receptor relative to a pre-selected indicator compound.

An electrospray apparatus employing multiple electrospray needles mounted on a rotatable plate sequentially delivers multiple sample streams to a mass spectrometer for analysis. The electrospray device includes an electrospray chamber, a rotatable needle supporting plate, a plurality of electrospray needles mounted on the plate, and a charger for applying a charge to droplets delivered to the electrospray chamber by the needles. The rotatable electrospray apparatus provides fast repetitive screening of simultaneously operating chromatography columns with a single mass spectrometer.

Device for delivery of multiple liquid sample streams to a mass spectrometer

Disclosed are apparatus for screening compound libraries using frontal chromatography in combination with mass spectrometry to identify and rank those members of the library that bind to a target receptor. The apparatus of this invention also permit a compound library to be rapidly screened to determine if any member of the library has a higher affinity for the target receptor relative to a pre-selected indicator compound.

An electrospray apparatus employing multiple electrospray needles mounted in a circular arrangement sequentially delivers multiple sample streams to a mass spectrometer for analysis. One electrospray device includes an electrospray chamber, a rotatable needle supporting plate, a plurality of electrospray needles mounted on the plate, and a charger for applying a charge to droplets delivered to the electrospray chamber by the needles. Another electrospray device includes an electrospray chamber, a plurality of electrospray needles arranged in a circular arrangement, a charger, and a rotatable member for delivering gas phase ions from one needle at a time to the mass spectrometer. The rotatable electrospray apparatus provides fast repetitive analysis of simultaneously operating chromatography columns or other sample streams with a single mass spectrometer.

The present invention provides an improved method of preparing a 4,7-di-O-alkyl chromogenic ketoside of N-acetylneuraminic acid (Neu5Ac) for use in detecting influenza virus types A and B. The ketosides are substrates that are selectively cleaved by a neuraminidase on influenza virus, but not be neuraminidases found on other viruses or on bacteria. The synthesis is efficient and provides large quantities of the ketoside for commercial development. The synthesis includes a step of alkylating the 4- and 7-hydroxyl groups of a protected alkyl ester alkyl ketoside derivative of Neu5Ac by a process that comprises contacting the derivative with a composition comprising an alkyl halide to form a 4,7-di-O-alkyl protected alkyl ester alkyl ketoside derivative of Neu5Ac. The synthesis alternatively includes protecting the 8- and 9-hydroxyl groups of an alkyl ester alkyl ketoside derivative of Neu5Ac by forming an 8,9-epoxide protected alkyl ester alkyl ketoside derivative of Neu5Ac.

Synthesis of 4,7-dialkyl chromogenic glycosides of N-acetylneuraminic acids

Solid phase synthetic methods of forming sulfur-linked disaccharides and oligosaccharides are described, wherein a saccharide or oligosaccharide bearing a protected thiol-group at the anomeric carbon is immobilized onto a solid support at any position other than the anomeric carbon atom of the reducing sugar. The resultant immobilized thiol, or a derivative thereof, undergoes nuclcophilic saccharide addition to provide a di- or oligosaccharide.

Growing community of inventors

Edmonton, Canada

Ole Hindsgaul