Rh‐Catalyzed Coupling of Aldehydes with Allylboronates Enables Facile Access to Ketones
作者:Kezhuo Zhang、Jiaxin Huang、Wanxiang Zhao
DOI:10.1002/chem.202103851
日期:2022.3.10
A novel strategy for the preparation of ketones from aldehydes and allylic boronic esters is presented. This reaction involves the allylation of aldehydes with allylic boronic esters and the Rh-catalyzed chain-walking of homoallylic alcohols. This approach features mild reaction conditions, broad substrate scope, and excellent functional groups. Mechanistic studies also supported that a tandem allylation
FATTY ACID DERIVATIVE LABELED WITH POSITRON-EMITTING RADIONUCLIDE
申请人:Astellas Pharma Inc.
公开号:EP3825302A1
公开(公告)日:2021-05-26
[Problem]
Provided is a labeled fatty acid derivative for diagnostic imaging that enables quantification of fatty acid metabolic activity in the heart muscle.
[Means for Solution]
The present inventors have conducted intensive investigations on a method that enables quantification of fatty acid metabolic activity and thus have found that a labeled fatty acid derivative typified by 3-[(5Z)-3-[18F]fluorotetradeca-5-en-1-yl]sulfanyl}propanoic acid or a salt thereof has excellent accumulation to the heart muscle and thus enables imaging of fatty acid metabolic activity by positron emission tomography (PET). Therefore, the labeled fatty acid derivative of the present invention can be used as a radiolabeled tracer for rapid and non-invasive quantification of fatty acid metabolic activity in the heart muscle, diagnostic imaging of heart disease typified by an ischemic heart disease, diagnostic imaging of the therapeutic effect of a therapeutic drug for heart disease, and the like.
Oxidation of 1-alkylcycloalkanols with PbIV and MnIII compounds under mechanical activation
作者:N. I. Kapustina、L. L. Sokova、V. D. Makhaev、L. A. Petrova、G. I. Nikishin
DOI:10.1007/bf02494851
日期:1999.11
A mechanoactivated solid-state oxidative decyclization of 1-alkylcycloalkanols under the action of the Pb(OAc)(4)-MX or Mn(OAc)(3)-MX systems (MX is a metal halide) was carried out for the first time. The reaction affords exclusively omega-haloalkanones.