A process for preparing a 1,2-dehydro-3-keto-steroid, which comprises exposing a 1,2-saturated-3-keto-steroid to a preparation containing steroid-1-dehydrogenase activity in the presence of an added electron carrier and a scavenger for toxic oxygen species.
申请人:The Board of Trustees of the University of Illinois
公开号:US10800730B2
公开(公告)日:2020-10-13
The invention provides a novel, general, and facile strategy for the creation of small molecules with high structural and stereochemical complexity. Aspects of the methods include ring system distortion reactions that are systematically applied to rapidly convert readily available natural products to structurally complex compounds with diverse molecular architectures. Through evaluation of chemical properties including fraction of sp3 carbons, ClogP, and the number of stereogenic centers, these compounds are shown to be significantly more complex and diverse than those in standard screening collections. This approach is demonstrated with natural products (gibberellic acid, adrenosterone, and quinine) from three different structural classes, and methods are described for the application of this strategy to any suitable natural product.
Methods and systems for the detection of 11-oxo androgens by LC-MS/MS
申请人:Laboratory Corporation of America Holdings
公开号:US11536733B2
公开(公告)日:2022-12-27
Disclosed are methods, systems, and computer program products for using liquid chromatography/tandem mass spectrometry (LC-MS/MS) for the analysis of endogenous biomarkers, such as 11-oxo androgens, in a sample. The 11-oxo androgens may comprise at least one of 11-hydroxyandrostendione (11OHA), 11-hydroxytestosterone (11OHT) or 11-ketotestosterone (11KT). More specifically, the methods, systems, and computer program products are described for detecting and quantifying the amount of an 11-oxo-androgen in a sample.