820-99-5Relevant academic research and scientific papers
Convenient synthesis of various substituted homotaurines from alk-2-enamides
Nai, Youfeng,Xu, Jiaxi
, p. 1355 - 1365 (2013/08/23)
Various substituted homotaurines (=3-aminopropane-1-sulfonic acids) 6 were readily synthesized in satisfactory to good yields via the Michael addition of thioacetic acid to alk-2-enamides 3 (→4), followed by LiAlH4 reduction (→5) and performic acid oxidation (Scheme 1). The configuration of 'anti'-disubstituted homotaurine 'anti'-6h was deduced from the 3-(acetylthio)alkanamide (=S-(3-amino-1,2-dimethyl-3-oxopropyl) ethanethioate)'anti'-4h formed in the Michael addition, which was identified via the Karplus equation analysis, and confirmed by X-ray diffraction analysis. The current route is an efficient method to synthesize diverse substituted homotaurines, including 1-, 2-, and N-monosubstituted, as well as 1,2-, 1,N-, 2,N-, and N,N-disubstituted homotaurines (Table). Copyright
Substituted pyridine compounds
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, (2008/06/13)
Disclosed herein are herbicidal pyridine compounds substituted at the 2- or 6-position with an OR2 moiety where R2 is hydrogen, lower alkyl, halomethyl, lower cyanoalkyl, alkenyl or alkynyl, as well as herbicidal compositions and herbicidal use of these compounds.
Therapeutically active 3-amino-1-phenyl(and substituted phenyl)-2-pyrazolines
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, (2008/06/13)
This disclosure describes certain 3-amino-1-phenyl-2-pyrazolines and 3-amino-1-substituted phenyl-2-pyrazolines and their C4 and C5 analogs useful for meliorating the inflammation and/or the progressive joint deterioration characteristic of arthritic disease, preventing the onset of asthmatic symptoms and allergic diseases, or as analgesic, antibacterial or antifungal agents.
