abstract |
The present invention relates to a compound comprising a cyclic peptide of formula (I) and an N-terminal modifying group A attached to Xaa1. Here, each of Xaa1, Xaa2, Xaa3, Xaa4, Xaa5, Xaa6 and Xaa7 and any one of them is a residue of an amino acid, and Yc is a structure of the following formula (X). |