Abstract:
The invention relates to novel lupeol-type triterpene derivatives and related compounds, and pharmaceutical compositions useful for therapeutic treatment of viral diseases and particularly HIV mediated diseases.
Abstract:
The invention is directed to a method to reduce a C-C double bond of an enone of a steroidal compound to produce a mixture of β ketone product and α ketone product, comprising treating a solution or suspension of the steroidal compound in a solvent with hydrogen gas in the presence of a catalyst and a substituted pyridine.
Abstract:
The present invention relates to a process for extracting, purifying and isolating cyclopamine from cyclopamine-containing biomass comprising the steps of contacting cyclopamine-containing organic matter with an extractant (e.g., aqueous extractant) capable of extracting cyclopamine, separating the extracted organic matter from the cyclopamine/extract solution, concentrating the cyclopamine/extract solution leaving a concentrated aqueous solution, contacting the concentrated aqueous solution with an organic extractant capable of selectively extracting cyclopamine from the aqueous phase, concentrating the cyclopamine-containing organic phase, providing an enriched extract containing cyclopamine, separating cyclopamine from the enriched extract using column chromatography, providing at least one fraction containing cyclopamine, and crystallizing select chromatography fractions to provide purified cyclopamine.
Abstract:
The present application is directed to compositions and methods for inhibiting angiogenesis and treating or preventing unwanted cell proliferation, including tumors, by inhibiting the hedgehog pathway, e.g., with an antagonist of the hedgehog pathway such as those disclosed herein.
Abstract:
The present invention makes available, inter alia, methods and reagents for modulating smoothened-dependent pathway activation. In certain embodiments, the subject methods can be used to counteract the phenotypic effects of unwanted activation of a hedgehog pathway, such as resulting from hedgehog gain-of-function, ptc loss-of-function or smoothened gain-of-function mutations.
Abstract:
The invention relates to novel lupeol-type triterpene derivatives and related compounds, and pharmaceutical compositions useful for therapeutic treatment of viral diseases and particularly HIV mediated diseases.
Abstract:
Provided are deglycosylation methods designed to optimize the yield of Veratrum alkaloid from Veratrum plant material and/or from an extract of Veratrum plant material.