Protein kinase B (PknB) is an essential serine/threonine protein kinase required for Mycobacterium tuberculosis (M. tb) cell division and cell-wall biosynthesis. A high throughput screen using PknB identified a (E)-4-oxo-crotonic acid inhibitor, named YH-8, which was used as a scaffold for SAR investigations. A significant improvement in enzyme affinity was achieved. The results indicated that the
A series of novel (E)-4-oxo-2-crotonamide derivatives were designed and synthesized to find potent antituberculosis agents. All the target compounds were evaluated for their in vitro activity against Mycobacterium tuberculosis H37Rv(MTB). Results reveal that 4-phenyl moiety at part A and short methyl group at part C were found to be favorable. Most of the derivatives displayed promising activity against
3-Benzoyl-2-mercaptopropionic acid derivatives represented by the general formula ##STR1## (wherein, X represents a hydrogen atom, a halogen atom, hydroxy group, a lower alkyl group or a lower alkoxy group, Y represents a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group, Z represents a hydrogen atom or an acyl group, and R represents a hydrogen atom or a lower alkyl group). These compounds have immunomodulative function and are effective for the treatment of diseases caused by abnormal immunofunction.
A particularly straightforward and efficient protocol for the synthesis of highly substitutedpyridines, based on a condensation reaction of β‐aminocrotonitrile and easily accessible (E)‐2‐oxo‐4‐aryl‐but‐3‐enoic acids and (E)‐4‐oxo‐4‐aryl‐but‐2‐enoic acids is described. J. Heterocyclic Chem., (2011).
3-Benzoyl-2-mercaptopropionic acid derivatives represented by the general formula
(wherein, X represents a hydrogen atom, a halogen atom, hydroxy group, a lower alkyl group or a lower alkoxy group, Y represents a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group, Z represents a hydrogen atom or an acyl group, and R represents a hydrogen atom or a lower alkyl group) have immunomodulative function and are effective for treatment of diseases caused by abnormal immunofunction.