Three Novel Spin-Labeled Substrates for Enzymatic Incorporation into Nucleic Acid Lattices
作者:Charles R. Toppin、Gary T. Pauly、Prabu Devanesan、David Kryak、Albert M. Bobst
DOI:10.1002/hlca.19860690213
日期:1986.3.19
The synthesis of one C(4)-spin-labeled uridine-5′-diphosphate (C(4)-UDP) and two nitroxide-containing 2′-deoxyuridine-5′-triphosphate (dUTP) analogs are reported. The C(4)-UDP derivative was incorporated into copolymers by polynucleotide phosphoxylase (PNPase); one of the two dUTP analogs, substituted at position C(4), was a good substrate for TdT, whereas the other one, substituted at position C(5)
The invention provides the compounds of formula (I) or pharmaceutically acceptable salts thereof. The invention also provides pharmaceutical compositions comprising one or more compounds of formula I or intermediates thereof and one more of pharmaceutically acceptable carriers, vehicles or diluents. The invention further provides methods of preparation and methods of use of prodrugs including NO-releasing prodrugs, double prodrugs and mutual prodrugs comprising the compounds of formula I.
[EN] METHOD FOR PREPARATION OF BETULINIC ACID<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDE BÉTULINIQUE
申请人:STORA ENSO OYJ
公开号:WO2013038312A1
公开(公告)日:2013-03-21
The present invention relates to a method for preparation of betulinic acid from betulin. The method comprises oxidizing betulin to betulinic and/or betulonic aldehyde with a ruthenium based catalyst catalyzed oxidation process in the presence of an oxidant, and further converting the betulinic and/or betulonic aldehyde to betulinic acid.
[EN] HIGHLY EFFICIENT POLARIZING AGENTS FOR DYNAMIC NUCLEAR POLARIZATION<br/>[FR] AGENTS DE POLARISATION TRÈS EFFICACES POUR LA POLARISATION DYNAMIQUE NUCLÉAIRE
申请人:BRUKER BIOSPIN S A S
公开号:WO2014167121A1
公开(公告)日:2014-10-16
The invention relates to compounds of general formula (I) wherein X is C=O or SO2, M is NR2 or O, and Q1 and Q2 are nitroxide-containing radicals, and their use as a Dynamic Nuclear Polarization (DNP) agent for polarizing an NMR-active spin of a nucleus of an analyte in Nuclear Magnetic Resonance (NMR) spectroscopy.
ELECTROCHROMIC COMPOUND, ELECTRODE, AND DISPLAY ELEMENT
申请人:ONO Kaori
公开号:US20090256121A1
公开(公告)日:2009-10-15
An electrochromic compound represented by Formula (1),
wherein R
1
is an alkyl group, an alkenyl group, an aryl group, or a heterocyclic group; R
2
and R
3
are each a hydrogen atom or a substituent; X is N—R
4
, an oxygen atom, or a sulfur atom; and R
4
is a hydrogen atom or a substituent; provided that at least one of R
1
-R
4
has a partial structure represented by Formula (2),
—Si(Y)
n
R′
(3-n)
Formula (2)
wherein Y is a halogen atom or OR, R is an alkyl group, or an aryl group; R′ is an alkyl group, an alkenyl group, an aryl group, or a heterocyclic group, and n is an integer of 1-3.