PROCESSES FOR THE PREPARATION OF DEHYDROEPIANDROSTERONE AND ITS INTERMEDIATES
申请人:DR. REDDY'S LABORATORIES LIMITED
公开号:US20160122382A1
公开(公告)日:2016-05-05
The present application relates to a regioselective and stereoselective processes for the preparation of dehydroepiandrosterone (DHEA) and processes for its intermediates.
本申请涉及一种用于制备去氢表雄酮(DHEA)的区域选择性和立体选择性过程,以及其中间体的过程。
Method for the Identification of a Metabolic Pathway Family by Means of Positive Selection
申请人:Monsan Pierre
公开号:US20100323390A1
公开(公告)日:2010-12-23
The invention relates to the direct selection of metabolic pathways having a determined function in the transformation of a substrate Ai} into a target product B}, which is of interest in the industrial, pharmaceutical or agri-food sectors. More specifically, the invention relates to the detection, within metagenomic libraries, of novel biosynthesis pathways involved in a biochemical reaction having a known product B}. The selection and characterisation of said novel metabolic pathways enables B} to be produced enzymatically. The invention provides an alternative to the chemical synthesis of the molecule in question B}. Moreover, and above all, the invention can be used specifically to target and exploit the only metabolic pathways enabling the transformation of Ai} into B}, while eliminating the associated metabolic pathways that can catabolise the target product B}.
US9879045B2
申请人:——
公开号:US9879045B2
公开(公告)日:2018-01-30
Selective Oxidation of Steroidal Homoallylic Alcohols Using Pyridinium Chlorochromate (PPC)
作者:Edward J. Parish、Chi Luo、Sarawanee Parish、Robert W. Heidepriem
DOI:10.1080/00397919208021550
日期:1992.11
Abstract Pyridinium chlorochromate (PCC), in the presence of anhydrous calcium carbonate, has been found to be an effective and convenient reagent for the selective oxidation of steroidal homoallylicalcohols to the corresponding β,δ-unsaturated ketones in good yield.