Design, synthesis, and in vitro inhibitory activity toward human leukocyte elastase, cathepsin G, and proteinase 3 of saccharin-derived sulfones and congeners
摘要:
The inhibitory activity toward human leukocyte elastase (HLE), cathepsin G (Cat G), and proteinase 3 (PR 3) of a series of saccharin derivatives having a sulfinate leaving group was investigated. The results of this study revealed that (a) inhibitory activity is dependent on the nature and pK(a) of the leaving group, and (b) the synthesized saccharin derivatives exhibit selective inhibition toward HLE and PR 3, with low or no activity toward cathepsin G. The results of exploratory biochemical, HPLC and high-field C-13 NMR studies are also described. Copyright (C) 1996 Elsevier Science Ltd
The chemistry of [
13
C]methyl phenyl sulfide is exploited to produce new isotopically labeled precursors that allow for the facile assembly of a wide range of labeled molecules from simple and relatively inexpensive starting materials. These compounds are applicable to a variety of research areas such as quantum computing, metabolism and materials science.
High purity isotopically labeled phosphonic acid esters can be obtained from isotopically enriched Chloro[
13
C]methyl phenyl sulfide The labeled phosphonic acid esters can then be used as precursors for the one step production of labeled vinyl sulfides, labeled vinyl sulfoxides, and labeled vinyl sulfones. The labeled phosphonic acid esters can also be reacted with a variety of aldehydes to produce extended vinyl systems that are isotopically labeled.
SYNTHESIS OF ISOTOPICALLY-LABELED FUNCTIONALIZED DIENES
申请人:Martinez Rodolfo A.
公开号:US20100317886A1
公开(公告)日:2010-12-16
All labeled carbons are derived ultimately from CO, as carbon-13 is separated from its lighter isotope by cyrogenic distillation of carbon monoxide (CO). Creation of stereospecific and site-specific compounds used for starting materials will address growing demands for labeled compounds, including isotopically-labeled functionalized dienes. Functionalized diene compounds can be used as precursors for the production of isotopically labeled pharmaceuticals, biomolecules, and natural products.
Design, synthesis, and in vitro inhibitory activity toward human leukocyte elastase, cathepsin G, and proteinase 3 of saccharin-derived sulfones and congeners
作者:William C. Groutas、Jeffrey B. Epp、Radhika Venkataraman、Rongze Kuang、Tien My Truong、Jerry J. McClenahan、Om Prakash
DOI:10.1016/0968-0896(96)00133-2
日期:1996.9
The inhibitory activity toward human leukocyte elastase (HLE), cathepsin G (Cat G), and proteinase 3 (PR 3) of a series of saccharin derivatives having a sulfinate leaving group was investigated. The results of this study revealed that (a) inhibitory activity is dependent on the nature and pK(a) of the leaving group, and (b) the synthesized saccharin derivatives exhibit selective inhibition toward HLE and PR 3, with low or no activity toward cathepsin G. The results of exploratory biochemical, HPLC and high-field C-13 NMR studies are also described. Copyright (C) 1996 Elsevier Science Ltd
Fluoro(phenylsufinyl)methyllithium. Note on the<sup>13</sup>C-NMR Spectrum of a Flourocarbenoid
The title compound is synthesized with 13C- and 6Li-labelling on the fluorinated carbon atom. H/Li-Exchange in fluoromethyl phenyl sulfoxide (12) causes a Δδ(13C) = + 11.4 ppm, a ΔJ(13C,1H) ≈ 0 Hz, and a ΔJ(19F,13C) = + 80.4 Hz. Tentative conclusions bout the struture of the title compound are drawn from these changes.