2,2-Dideutero-5-aminolevulinic acid or its salt, or a hydrate or a solvate thereof, preferably 2,2-dideutero-5-aminolevulinic acid hydrochloride, and a process for preparing 2,2-dideutero-5-aminolevulinic acid are provided. The 2,2-Dideutero-5-aminolevulinic acid provided by the present invention is useful as a contrast medium for MRI diagnosis.
A Three Enzyme Pathway for 2-Amino-3-hydroxycyclopent-2-enone Formation and Incorporation in Natural Product Biosynthesis
作者:Wenjun Zhang、Megan L. Bolla、Daniel Kahne、Christopher T. Walsh
DOI:10.1021/ja1002845
日期:2010.5.12
A number of natural products contain a 2-amino-3-hydroxycyclopent-2-enone five membered ring, termed C(5)N, which is condensed via an amide linkage to a variety of polyketide-derived polyenoic acid scaffolds. Bacterial genome mining indicates three tandem ORFs that may be involved in C(5)N formation and subsequent installation in amide linkages. We show that the protein products of three tandem ORFs
Eine dreistufige Synthese der δ-Aminolaevulinsäure
作者:Claus Herdeis、Anna Dimmerling
DOI:10.1002/ardp.19843170405
日期:——
Piperidin‐2,5‐dion (4) kann durch katalytische Hydrierung von 5‐Hydroxypyridon(2) (3) erhalten werden. Hydrolytische Ringöffnung ergibt δ‐Aminolaevulinsäure·HCl (2).
Synthesis of [
<sup>13</sup>
C
<sub>6</sub>
]‐ibrutinib
作者:Michal Kriegelstein、Miloš Hroch、Aleš Marek
DOI:10.1002/jlcr.3944
日期:2021.11
Convenient and straightforward synthesis of ibrutinib labeled by carbon-13 isotope is reported. Isotopically labeled building block is introduced in the last step of reaction sequence affording sufficient isolated yield (7%) of [13C6]-ibrutinib calculated towards starting commercially available [13C6]-bromobenzene.
Therapeutic compounds for treating dyslipidemic conditions
申请人:Merck & Co., Inc.
公开号:US07125865B2
公开(公告)日:2006-10-24
The present invention relates to novel LXR ligands of Formula I and the pharmaceutically acceptable salts, esters and tautomers thereof, which are useful in the treatment of dyslipidemic conditions, particularly depressed levels of HDL cholesterol.