Novel ramoplanin derivatives are disclosed. These ramoplanin derivatives exhibit antibacterial activity. As the compounds of the subject invention exhibit potent activities against gram positive bacteria, they are useful antimicrobial agents. Methods of synthesis and of use of the compounds are also disclosed.
The present invention relates to a compound of Formula (I) and the manufacturing method(s) thereof and the use thereof:
Formula (I)
wherein: Ar is a nitrogen-containing heteroaromatic ring group; X and Z are each a carbon atom, and so on; Y is CO, and so on; R
1
is a hydrogen atom, and so on; R
2
and R
3
are each a hydrogen atom, and so on; R
4
and R
5
are each a hydrogen atom, and so on; and the formula
is a single bond or a double bond.
According to the present invention, the compound of the present invention can provide Cdk4 and/or Cdk6 inhibitors for treating malignant tumors, because the compounds of the present invention exhibit a prominent growth inhibitory activity against tumor cells.