A Cooperative Catalytic System of Platinum/Iridium Alloyed Nanoclusters and a Dimeric Catechol Derivative: An Efficient Synthesis of Quinazolines Through a Sequential Aerobic Oxidative Process
A cooperativecatalyticsystem of heterogeneous polymer-supported bi-metallic platinum/iridium (Pt/Ir) alloyednanoclusters and 5,5′,6,6′-tetrahydroxy-3,3,3′,3′-tetramethyl-1,1′-spiro-bisindane (TTSBI) enabled the facile preparation of quinazolinederivatives with low catalyst loadings and broad substrate scope under mild aerobicoxidative conditions. The ability to perform the reaction in gram-scale
Compounds and methods of synthesizing oxysterols are provided. The compounds and methods provided allow the oxysterol to be safely produced at a high yield. The compounds and methods provided can produce the oxysterol in a stereoselective manner.
METHODS FOR THE SEPARATION AND DETECTION OF AN OXYSTEROL
申请人:Warsaw Orthopedic, Inc.
公开号:US20170273990A1
公开(公告)日:2017-09-28
Assay methods for determining purity of a sample of a sterol are provided. These methods include providing an HPLC eluent including a sterol, other compounds related to the sterol and a mobile volatile phase; generating an aerosol of liquid droplets from the HPLC eluent; drying the liquid droplets to obtain residue particles of the sterol; contacting the residue particles of the sterol with an ion stream which applies a size-dependent electrical charge to each of the residue particles to generate an electrical signal and measuring the electrical signal to determine the purity of the sterol in the sample. The sterol can be OXY133 or OXY133 monohydrate.
POLYMORPHIC FORMS OF AN OXYSTEROL AND METHODS OF MAKING THEM
申请人:Warsaw Orthopedic, Inc.
公开号:US20180162900A1
公开(公告)日:2018-06-14
Compositions and methods for preparing OXY133 polymorphs Form C to Form I are provided. The methods include subjecting a slurry of OXY133 to conditions sufficient to convert OXY133 to the OXY133 polymorph Form C, polymorph Form D, polymorph Form E, polymorph Form F, polymorph Form G, polymorph Form H, polymorph Form I or a mixture thereof. A polymorph of OXY133 is also provided and that polymorph can be polymorph Form C, polymorph Form D, polymorph Form E, polymorph Form F, polymorph Form G, polymorph Form H, polymorph Form I or a mixture thereof. Pharmaceutical compositions including OXY133 polymorphs are also provided.
Fluorescent nucleobase conjugates having anionic linkers
申请人:PE Corporation (NY)
公开号:US20020102590A1
公开(公告)日:2002-08-01
Provided are nucleotide-dye conjugates and related compounds in which a dye is linked to a nucleobase directly or indirectly by an anionic linker. The anionic character of the linker is provided by one or more anionic moieties which are present in the linker, such as phosphate, phosphonate, sulfonate, and carboxylate groups. When the dye is a provided as a donor/acceptor dye pair, the anionic linker can be located between the donor and the acceptor, or between the nucleobase and either the donor or acceptor, or both. In one embodiment, conjugates of the invention provide enhanced electrophoretic mobility characteristics to sequencing fragments, e.g., for dideoxy sequencing using labeled terminators.