135711-62-5Relevant articles and documents
Efficient and convergent coupling route for the short-step synthesis of enantiopure 2α- and 2β-alkylated 1α,25-dihydroxy-19-norvitamin D3 analogues
Yoshida, Akihiro,Ono, Keiichiro,Suhara, Yoshitomo,Saito, Nozomi,Takayama, Hiroaki,Kittaka, Atsushi
, p. 1175 - 1179 (2003)
Novel efficient synthesis of several enantio-pure 2-alkylated 1α,25-dihydroxy-19-norvitamin D3 analogues through radical introduction of 2-alkyl chain and C5-C6 position coupling using Julia-type olefination as key steps w
Synthesis, Structure, and Tandem Mass Spectrometric Characterization of the Diastereomers of Quinic Acid
Deshpande, Sagar,Matei, Marius Febi,Jaiswal, Rakesh,Bassil, Bassem S.,Kortz, Ulrich,Kuhnert, Nikolai
, p. 7298 - 7306 (2016/10/07)
(-)-Quinic acid possess eight possible stereoisomers, which occur both naturally and as products of thermal food processing. In this contribution, we have selectively synthesized four isomers, namely, epi-quinic acid, muco-quinic acid, cis-quinic acid, and scyllo-quinic acid, to develop a tandem LC-MS method identifying all stereoisomeric quinic acids. Four derivatives have been unambiguously characterized by single-crystal X-ray crystallography. The missing diastereomers of quinic acid were obtained by nonselective isomerization of (-)-quinic acid using acetic acid/concentrated H2SO4 allowing chromatographic separation and assignment of all diastereomers of quinic acid. We report for the first time that a full set of stereoisomers are reliably distinguishable on the basis of their tandem mass spectrometric fragment spectra as well as their elution order. A rationale for characteristic fragmentation mechanisms is proposed. In this study, we also observed that muco-quinic acid, scyllo-quinic acid, and epi-quinic acid are present in hydrolyzed Guatemalan roasted coffee sample as possible products of roasting.
HYBRID MOLECULES HAVING MIXED VITAMIN D RECEPTOR AGONISM AND HISTONE DEACETYLASE INHIBITORY PROPERTIES
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Page/Page column 38, (2008/06/13)
Hybrid molecules comprising a vitamin D receptor agonist moiety and an HDAC inhibitor moiety are described herein The HDAC inhibitor moiety can be modelled after an HDAC inhibitor selected from the group consisting of tπchostatm A, sodium butyrate, valpro