Diastereoselective synthesis of novel 3-aryloxy/alkoxy-4-benzothiazolylpyrazolyl-<font>β</font>-lactams: Potential synthons for novel aminoacids/nanocopolymers
作者:Jitender Bhalla、Shamsher S. Bari、Bimal K. Banik、Aman Bhalla
DOI:10.1080/00397911.2017.1357186
日期:2017.11.2
ABSTRACT A fast, efficient, and diastereoselective synthesis of novel 3-oxo-4-benzothiazolylpyrazolyl-β-lactams is described. The reactionbetween 2-aryloxy/alkoxyacetic acid and novel benzothiazolylpyrazole-substituted imines afforded exclusive formation of trans-β-lactams. The scope of the reaction was investigated by varying different groups on substrates (R1, R2, R3, Z). All the novel compounds
Facile synthesis of novel benzothiazolylpyrazolyl anchored 3-thio/seleno/chloro-β-lactams: Synthetic intermediates for novel 3-sulfenyl/sulfonyl, C-3 functionalized monocyclic and spirocyclic β-lactams
作者:Jitender Bhalla、Shamsher S. Bari、Aman Bhalla
DOI:10.1080/00397911.2018.1515366
日期:2018.10.18
configuration was assigned with respect to coupling constant values of C3-H and C4-H. The novelβ-lactams will be the potential synthetic intermediates to access 3-sulfenyl/sulfonyl, C-3 functionalized monocyclic and spirocyclic β-lactams of medicinal interest. The present manuscript provides first report on β-lactams linked to bulky group benzothiazolylpyrazolyl. Graphical Abstract